Data as of Nov 5, 2026

72.37.128.0/17

7,168 anonymizer addresses · 22%8 residential-proxy exits · 30 days

GTT Communications Inc. · space held by PacketExchange, Inc

Announcement

this exact prefix

No RPKI

Announced by

AS3257

Type

Unknown

35% of it

Residential-proxy exits

Proxy exits

0.02% of its addresses · 30 days

Always-on exits

25% of its exits

Spread

5 of 128

/24s with at least one exit

Providers

selling exits here

Oct 6, 2026 – Nov 4, 2026

Exits seen per day

4.4K observations

ISP proxy · anonymizer
Residential

/24s with the most always-on exits

/24	Always-on exits	Proxy exits
72.37.183.0/24	2	4
72.37.129.0/24	0	1
72.37.134.0/24	0	1
72.37.157.0/24	0	1
72.37.181.0/24	0	1

Proxy providers listing exits

Ake.net
AnyIP
BirdProxies
ByteProxies
Byteful
CliProxy
ColaProxy
Decodo
EnigmaProxy
FastProxy
FlexyProxies
FloppyData
GloryCloud
GonzoProxy
IPPeak
Infatica
KocerRoxy
LudaxProxy
MangoProxy
NodeProxy
NovaProxy
Oxylabs
Proxiware
Proxy-Seller
ProxyEmpire
ProxyRack
Proxyma
RainProxy
Shifter
Thordata
TrueProxies
VantageProxies
VitalExclusive
WealthProxies

IPv4 market

Path

1 · Holder

PacketExchange, Inc

record created Mar 17, 2005

2 · Leased from

IPNetZone

for its owner PacketExchange, Inc

3 · Announced by

AS3257 GTT Communications Inc.

since Jul 2015 · 11.3 yr ago

4 · Use

Proxy providersnamed Bunny, NovadaVPN servicesnamed doxx.net

Unknown

Operators, sellers and brokers

Proxy providers

Name	Parent	Kind	In 72.37.128.0/17	/24s	Role
Bunny		Proxy operator	2,8168.6%	11	Runs it
Novada		Proxy seller	2560.78%	1	Sells it

Runs itSells it

VPN services

Name	Parent	In 72.37.128.0/17	/24s
doxx.net		2560.78%	1

Leased from

IP brokers

Name	In 72.37.128.0/17	/24s
IPNetZone	4,09613%	16

Leased from

Owners leasing their own space

Name	In 72.37.128.0/17	/24s
PacketExchange, Inc	6,91221%	27

Lineage

How this block came to its use, oldest first. The whole IPv4 market →

72.37.128.0/17

From the registry to its use

Mar 17, 2005
Registry record
PacketExchange, Inc
Direct Allocation
72.37.128.0/17
Mar 17, 2005
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.128.0/18
Apr 22, 2005
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.131.0/24
Apr 22, 2005
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.132.0/24
Sep 13, 2005
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.156.0/24
Dec 7, 2005
Route object
AS36169 DETEL Computer Solutions, LLC
RADB route object for AS36169 DETEL Computer Solutions, LLC, maintainer MAINT-AS3257
72.37.158.0/24
May 11, 2006
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.200.0/21
May 11, 2006
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.208.0/21
May 11, 2006
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.232.0/21
May 11, 2006
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.240.0/21
May 11, 2006
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.248.0/21
Nov 25, 2006
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.232.0/22
Nov 25, 2006
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.240.0/22
Jan 15, 2007
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.224.0/21
Mar 14, 2007
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
Mar 14, 2007
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.216.0/21
Mar 14, 2007
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.236.0/22
Mar 14, 2007
Route object
AS25973 PacketExchange, Inc
RADB route object for AS25973 PacketExchange, Inc, maintainer MAINT-AS3257
72.37.242.0/23
Mar 29, 2007
Route object
AS10940 Sangoma US Inc.
RADB route object for AS10940 Sangoma US Inc., maintainer MAINT-AS3257
72.37.252.0/24
Apr 23, 2007
Route object
AS32751 Nuclearfallout Enterprises, Inc.
RADB route object for AS32751 Nuclearfallout Enterprises, Inc., maintainer MAINT-AS1828
72.37.253.0/24
Apr 24, 2007
Route object
AS18508 RhythmOne, LLC
RADB route object for AS18508 RhythmOne, LLC, maintainer MAINT-AS3257
72.37.255.0/24
Apr 22, 2011– Nov 1, 2014
Announced
AS25973 PacketExchange, Inc
Business
Jul 22, 2011
Route object
AS13354 zColo
RADB route object for AS13354 zColo, maintainer MAINT-AS13354
72.37.224.0/21
Jul 22, 2011
Route object
AS13354 zColo
RADB route object for AS13354 zColo, maintainer MAINT-AS13354
72.37.237.0/24
Jun 28, 2012
Route object
AS4436 GTT Americas, LLC
RADB route object for AS4436 GTT Americas, LLC, maintainer MAINT-AS3257
72.37.171.0/24
Jun 28, 2012
Route object
AS4436 GTT Americas, LLC
RADB route object for AS4436 GTT Americas, LLC, maintainer MAINT-AS3257
72.37.244.0/24
Jun 28, 2012
Route object
AS4436 GTT Americas, LLC
RADB route object for AS4436 GTT Americas, LLC, maintainer MAINT-AS3257
72.37.248.0/24
Jul 22, 2015– today
Announced
AS3257 GTT Communications Inc.
Internet provider
Apr 15, 2020
Route object
AS27411 Leaseweb USA, Inc.
RADB route object for AS27411 Leaseweb USA, Inc., maintainer MAINT-AS16265
72.37.242.0/23
Aug 9, 2022
Route object
AS7203 Leaseweb USA, Inc.
ARIN route object for AS7203 Leaseweb USA, Inc., maintainer MNT-NTGL
72.37.218.0/23
Aug 9, 2022
Route object
AS7203 Leaseweb USA, Inc.
ARIN route object for AS7203 Leaseweb USA, Inc., maintainer MNT-NTGL
72.37.222.0/23
Apr 6, 2026
Route object
AS16740 DOXX.NET Corporation
ARIN route object for AS16740 DOXX.NET Corporation, maintainer MNT-PACKE-25
72.37.173.0/24
Apr 6, 2026
Route object
AS16740 DOXX.NET Corporation
ARIN route object for AS16740 DOXX.NET Corporation, maintainer MNT-PACKE-25
72.37.200.0/24
Apr 6, 2026
Route object
AS16740 DOXX.NET Corporation
ARIN route object for AS16740 DOXX.NET Corporation, maintainer MNT-PACKE-25
72.37.213.0/24
Apr 6, 2026
Route object
AS16740 DOXX.NET Corporation
ARIN route object for AS16740 DOXX.NET Corporation, maintainer MNT-PACKE-25
72.37.220.0/24
Apr 6, 2026
Route object
AS16740 DOXX.NET Corporation
ARIN route object for AS16740 DOXX.NET Corporation, maintainer MNT-PACKE-25
72.37.232.0/24
Apr 6, 2026
Route object
AS16740 DOXX.NET Corporation
ARIN route object for AS16740 DOXX.NET Corporation, maintainer MNT-PACKE-25
72.37.235.0/24
Apr 6, 2026
Route object
AS16740 DOXX.NET Corporation
ARIN route object for AS16740 DOXX.NET Corporation, maintainer MNT-PACKE-25
72.37.236.0/24
Apr 6, 2026
Route object
AS16740 DOXX.NET Corporation
ARIN route object for AS16740 DOXX.NET Corporation, maintainer MNT-PACKE-25
72.37.245.0/24
Apr 6, 2026
Route object
AS16740 DOXX.NET Corporation
ARIN route object for AS16740 DOXX.NET Corporation, maintainer MNT-PACKE-25
72.37.250.0/24
Sep 3, 2026
Route object
AS7203 Leaseweb USA, Inc.
ARIN route object for AS7203 Leaseweb USA, Inc., maintainer MNT-NTGL
72.37.224.0/21
today
Used
Bunny
Proxy operator
today
Used
Novada
Proxy seller
today
Used
doxx.net
VPN

Announcements

Nesting

More-specifics by size

Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.

More specific

Announcements inside

Arrived

Sort

Prefix	Origin	Type	Operator	Leased from	Proxy exits	Holder
72.37.128.0/23 since Oct 2011	AS23316	Residential			1	PacketExchange, Inc via Bel Air Internet, LLC
72.37.133.0/24 since Mar 2026	AS5065	ISP proxy	Proxy providersoperated by Bunny			PacketExchange, Inc via Bunny Communications
72.37.134.0/23 since Oct 2011	AS23316	Residential			1	PacketExchange, Inc via Bel Air Internet, LLC
72.37.136.0/24 since Dec 2023	AS19257	Residential				PacketExchange, Inc
72.37.137.0/24 since Mar 2026	AS5065	ISP proxy	Proxy providersoperated by Bunny			PacketExchange, Inc via Bunny Communications
72.37.139.0/24 since Mar 2026	AS5065	ISP proxy	Proxy providersoperated by Bunny			PacketExchange, Inc via Bunny Communications
72.37.140.0/24 since Mar 2026	AS5065	ISP proxy	Proxy providersoperated by Bunny			PacketExchange, Inc via Bunny Communications
72.37.141.0/24 since Mar 2009	AS23316	Residential				PacketExchange, Inc via Bel Air Internet, LLC
72.37.142.0/24 since Mar 2009	AS23316	Residential				PacketExchange, Inc via Bel Air Internet, LLC
72.37.143.0/24 since Apr 2026	AS38854	Datacenter proxy	Proxy providersoperated by Bunny			PacketExchange, Inc via Bunny Communications
72.37.146.0/24 since Mar 2026	AS5065	ISP proxy	Proxy providersoperated by Bunny			PacketExchange, Inc via Bunny Communications
72.37.148.0/22 since Sep 28, 2026	AS11611	Internet provider				PacketExchange, Inc via Arctic Fox Networks Inc
72.37.153.0/24 since Mar 2026	AS5065	ISP proxy	Proxy providersoperated by Bunny			PacketExchange, Inc via Bunny Communications
72.37.154.0/23 since Mar 2026	AS20001	ISP proxy		IP broker IPNetZone		PacketExchange, Inc via IPNetZone
72.37.157.0/24 since Mar 2026	AS5065	ISP proxy	Proxy providersoperated by Bunny		1	PacketExchange, Inc via Bunny Communications
72.37.159.0/24 since Jul 2012	AS19257	Residential				PacketExchange, Inc
72.37.160.0/23 since Mar 2026	AS20001	ISP proxy		IP broker IPNetZone		PacketExchange, Inc via IPNetZone
72.37.162.0/24 since Apr 2026	AS5065	ISP proxy	Proxy providersoperated by Bunnysold by Novada			PacketExchange, Inc via Bunny Communications
72.37.163.0/24 since May 2015	AS3257	Internet provider				PacketExchange, Inc
72.37.164.0/23 since Mar 2026	AS20001	ISP proxy		IP broker IPNetZone		PacketExchange, Inc via IPNetZone
72.37.167.0/24 since Apr 2026	AS38854	Datacenter proxy	Proxy providersoperated by Bunny			PacketExchange, Inc via Bunny Communications
72.37.168.0/23 since Mar 2026	AS20001	ISP proxy		IP broker IPNetZone		PacketExchange, Inc via IPNetZone
72.37.170.0/24 since Apr 2026	AS38854	Datacenter proxy	Proxy providersoperated by Bunny			PacketExchange, Inc via Bunny Communications
72.37.174.0/23 since Apr 2026	AS20001	Residential				PacketExchange, Inc
72.37.176.0/22 since Sep 28, 2026	AS11611	Internet provider				PacketExchange, Inc via Arctic Fox Networks Inc
72.37.180.0/22 since Oct 2011	AS23316	Residential			5 2 always on	PacketExchange, Inc via Bel Air Internet, LLC
72.37.184.0/21 since Sep 28, 2026	AS11611	Internet provider				PacketExchange, Inc via Arctic Fox Networks Inc
72.37.192.0/21 since Sep 28, 2026	AS11611	Internet provider				PacketExchange, Inc via Arctic Fox Networks Inc
72.37.201.0/24 since Dec 2018	AS11403	Hosting				PacketExchange, Inc
72.37.204.0/22 since Sep 28, 2026	AS11611	Internet provider				PacketExchange, Inc via Arctic Fox Networks Inc
72.37.208.0/22 since Sep 28, 2026	AS11611	Internet provider				PacketExchange, Inc via Arctic Fox Networks Inc
72.37.212.0/24 since May 2015	AS3257	Internet provider				PacketExchange, Inc
72.37.214.0/23 since Mar 2026	AS20001	ISP proxy		IP broker IPNetZone		PacketExchange, Inc via IPNetZone
72.37.216.0/23 since Sep 2023	AS46562	Hosting				PacketExchange, Inc via Zerolag Communications, Inc.
72.37.238.0/23 since Mar 2026	AS20001	ISP proxy		IP broker IPNetZone		PacketExchange, Inc via IPNetZone
72.37.240.0/23 since Mar 2026	AS20001	ISP proxy		IP broker IPNetZone		PacketExchange, Inc via IPNetZone
72.37.246.0/23 since Mar 2026	AS20001	ISP proxy		IP broker IPNetZone		PacketExchange, Inc via IPNetZone
72.37.249.0/24 since Oct 10, 2026	AS16740	VPN	VPN servicesoperated by doxx.net			PacketExchange, Inc via DOXX.NET Corporation

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
72.37.128.0/17	32,768	NETBLK-PACKETEXCHANGE-V4-03	PacketExchange, Inc (PACKE-25) · US	Direct Allocation	Mar 17, 2005	abuse@gtt.net
└ 72.37.128.0/23	512	MZIMA03-CUST-BELAIRINTERNET05	Bel Air Internet, LLC (BAI-8) · US	Reallocated	Jan 26, 2009	abuse@belairinternet.com
└ 72.37.128.0/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.8/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.24/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.28/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.32/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.40/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.44/30	4	BAI-SWIP-197	unknown	—	—	—
└ 72.37.128.48/29	8	BAI-SWIP-195	unknown	—	—	—
└ 72.37.128.64/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.72/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.80/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.88/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.92/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.96/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.104/29	8	BAI-SWIP-219	unknown	—	—	—
└ 72.37.128.112/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.120/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.128/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.128.192/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.129.0/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.129.8/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.129.16/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.129.32/27	32	BAI-SWIP-258	unknown	—	—	—
└ 72.37.129.64/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.129.128/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.129.192/27	32	BAI-SWIP-258	unknown	—	—	—
└ 72.37.129.224/28	16	BAI-SWIP-258	unknown	—	—	—
└ 72.37.129.240/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.129.248/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.130.0/24	256	QUADRANET-REALLOCATED	unknown	—	—	—
└ 72.37.131.80/29	8	MZIMA03-CUST-CORPCOLO09	unknown	—	—	—
└ 72.37.133.0/24	256	BUNNY1-ARIN-GTT	Bunny Communications (BCL-435) · US	Reallocated	Mar 18, 2026	abuse@bunnycommunications.com
└ 72.37.134.0/23	512	MZIMA03-CUST-BELAIRINT06	Bel Air Internet, LLC (BAI-8) · US	Reallocated	Jan 26, 2009	abuse@belairinternet.com
└ 72.37.134.0/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.134.8/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.134.16/28	16	BAI-SWIP-258	unknown	—	—	—
└ 72.37.134.32/27	32	BAI-SWIP-258	unknown	—	—	—
└ 72.37.134.64/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.134.128/27	32	BAI-SWIP-258	unknown	—	—	—
└ 72.37.134.160/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.134.168/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.134.176/28	16	BAI-SWIP-258	unknown	—	—	—
└ 72.37.134.192/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.135.0/25	128	BAI-SWIP-258	unknown	—	—	—
└ 72.37.135.128/27	32	BAI-SWIP-258	unknown	—	—	—
└ 72.37.135.160/27	32	BAI-SWIP-258	unknown	—	—	—
└ 72.37.135.192/27	32	BAI-SWIP-258	unknown	—	—	—
└ 72.37.135.224/30	4	BAI-SWIP-150	unknown	—	—	—
└ 72.37.135.228/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.135.232/29	8	BAI-SWIP-149	unknown	—	—	—
└ 72.37.135.240/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.135.248/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.136.0/24	256	MZIMA03-CUST-METRODP02	MetroDataPath, LLC (METRO-29) · US	Reassigned	May 5, 2005	—
└ 72.37.137.0/24	256	BUNNY1-ARIN-GTT	Bunny Communications (BCL-435) · US	Reallocated	Mar 18, 2026	abuse@bunnycommunications.com
└ 72.37.139.0/24	256	BUNNY1-ARIN-GTT	Bunny Communications (BCL-435) · US	Reallocated	Mar 18, 2026	abuse@bunnycommunications.com
└ 72.37.140.0/24	256	BUNNY1-ARIN-GTT	Bunny Communications (BCL-435) · US	Reallocated	Mar 18, 2026	abuse@bunnycommunications.com
└ 72.37.141.0/24	256	MZIMA03-CUST-BELAIRINTERNET09	Bel Air Internet, LLC (BAI-8) · US	Reallocated	Jan 26, 2009	abuse@belairinternet.com
└ 72.37.141.0/27	32	BAI-SWIP-258	unknown	—	—	—
└ 72.37.141.32/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.141.40/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.141.48/28	16	BAI-SWIP-258	unknown	—	—	—
└ 72.37.141.64/27	32	BAI-SWIP-258	unknown	—	—	—
└ 72.37.141.96/27	32	BAI-SWIP-258	unknown	—	—	—
└ 72.37.141.128/25	128	BAI-SWIP-258	unknown	—	—	—
└ 72.37.142.0/24	256	MZIMA03-CUST-BELAIRINTERNET10	Bel Air Internet, LLC (BAI-8) · US	Reallocated	Jan 26, 2009	abuse@belairinternet.com
└ 72.37.142.0/25	128	BAI-SWIP-258	unknown	—	—	—
└ 72.37.142.128/25	128	BAI-SWIP-258	unknown	—	—	—
└ 72.37.143.0/24	256	BUNNY1-ARIN-GTT	Bunny Communications (BCL-435) · US	Reallocated	Mar 31, 2026	abuse@bunnycommunications.com
└ 72.37.144.0/26	64	OPT-COM-GROUP-TINET	unknown	—	—	—
└ 72.37.144.80/29	8	ROCKET-FUEL-TINET	unknown	—	—	—
└ 72.37.144.88/30	4	MOD-TINET	unknown	—	—	—
└ 72.37.144.104/29	8	TEKSAVVY-TINET	unknown	—	—	—
└ 72.37.144.112/28	16	LNNYCPOP-TINET	unknown	—	—	—
└ 72.37.144.152/29	8	JAMESTOWN-PERTNERS-TINET	unknown	—	—	—
└ 72.37.145.24/29	8	MICROSOFT-GTT	unknown	—	—	—
└ 72.37.145.32/28	16	GTT-CUSTOMER	unknown	—	—	—
└ 72.37.145.48/28	16	GTT-GTT	unknown	—	—	—
└ 72.37.145.72/29	8	URBAN-GTT	unknown	—	—	—
└ 72.37.145.160/27	32	NEPC-TINET	unknown	—	—	—
└ 72.37.146.0/24	256	BUNNY1-ARIN-GTT	Bunny Communications (BCL-435) · US	Reallocated	Mar 18, 2026	abuse@bunnycommunications.com
└ 72.37.147.128/25	128	MOX-TINET	unknown	—	—	—
└ 72.37.148.0/22	1,024	NET-V4-GTT-BLK25	Arctic Fox Networks Inc (AFN-35) · US	Reallocated	Feb 23, 2026	dmcanotice@arcticfox.dev
└ 72.37.152.0/24	256	IPXO-GTT	unknown	—	—	—
└ 72.37.153.0/24	256	BUNNY1-ARIN-GTT	Bunny Communications (BCL-435) · US	Reallocated	Mar 18, 2026	abuse@bunnycommunications.com
└ 72.37.154.0/23	512	GTT-CUSTOMER	IPNetZone (IPNET-1) · US	Reallocated	Feb 25, 2026	ipabuse@unsi.net
└ 72.37.157.0/24	256	BUNNY1-ARIN-GTT	Bunny Communications (BCL-435) · US	Reallocated	Mar 18, 2026	abuse@bunnycommunications.com
└ 72.37.159.0/24	256	NLYR-72-37-159-0-24	Oneando, LLC (C04653973) · US	Reassigned	Jul 29, 2013	abuse@gtt.net via NETBLK-PACKETEXCHANGE-V4-03
└ 72.37.160.0/23	512	GTT-CUSTOMER	IPNetZone (IPNET-1) · US	Reallocated	Feb 25, 2026	ipabuse@unsi.net
└ 72.37.162.0/24	256	BUNNY1-ARIN-GTT	Bunny Communications (BCL-435) · US	Reallocated	Mar 31, 2026	abuse@bunnycommunications.com
└ 72.37.163.0/24	256	CPANELLOGIN-GTT	CpanelLogin.net (CPANE-2) · US	Reassigned	Oct 14, 2015	support@cpanellogin.net
└ 72.37.164.0/23	512	GTT-CUSTOMER	IPNetZone (IPNET-1) · US	Reallocated	Feb 25, 2026	ipabuse@unsi.net
└ 72.37.166.192/27	32	MZIMA03-CUST-ARES01	unknown	—	—	—
└ 72.37.167.0/24	256	BUNNY1-ARIN-GTT	Bunny Communications (BCL-435) · US	Reallocated	Mar 31, 2026	abuse@bunnycommunications.com
└ 72.37.168.0/23	512	GTT-CUSTOMER	IPNetZone (IPNET-1) · US	Reallocated	Feb 25, 2026	ipabuse@unsi.net
└ 72.37.170.0/24	256	BUNNY1-ARIN-GTT	Bunny Communications (BCL-435) · US	Reallocated	Mar 31, 2026	abuse@bunnycommunications.com
└ 72.37.171.0/24	256	GLENCORE-GTT	unknown	—	—	—
└ 72.37.173.0/24	256	DOXX-NET-CORPORATION-GTT	unknown	—	—	—
└ 72.37.174.0/24	256	QUADRANET-REALLOCATED	unknown	—	—	—
└ 72.37.175.0/24	256	DOXX-NET-CORPORATION-GTT	unknown	—	—	—
└ 72.37.176.0/22	1,024	NET-V4-GTT-BLK25	Arctic Fox Networks Inc (AFN-35) · US	Reallocated	Feb 23, 2026	dmcanotice@arcticfox.dev
└ 72.37.180.0/22	1,024	MZIMA03-CUST-BELAIRINT08	Bel Air Internet, LLC (BAI-8) · US	Reallocated	Jan 26, 2009	abuse@belairinternet.com
└ 72.37.180.0/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.64/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.128/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.136/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.140/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.144/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.148/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.152/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.160/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.168/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.176/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.180/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.184/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.192/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.196/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.200/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.208/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.216/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.220/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.224/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.180.248/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.0/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.64/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.72/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.76/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.80/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.84/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.88/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.92/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.96/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.104/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.112/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.116/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.120/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.128/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.136/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.144/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.152/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.156/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.160/28	16	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.176/28	16	BAI-SWIP-258	unknown	—	—	—
└ 72.37.181.192/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.0/28	16	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.16/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.32/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.40/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.44/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.48/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.56/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.64/28	16	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.80/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.88/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.96/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.100/30	4	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.104/29	8	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.112/28	16	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.128/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.182.192/26	64	BAI-SWIP-258	unknown	—	—	—
└ 72.37.183.48/29	8	BAI-SWIP-79	unknown	—	—	—
└ 72.37.183.128/25	128	BAI-SWIP-258	unknown	—	—	—
└ 72.37.184.0/21	2,048	NET-V4-GTT-BLK27	Arctic Fox Networks Inc (AFN-35) · US	Reallocated	Feb 23, 2026	dmcanotice@arcticfox.dev
└ 72.37.192.0/21	2,048	NET-V4-GTT-BLK28	Arctic Fox Networks Inc (AFN-35) · US	Reallocated	Feb 23, 2026	dmcanotice@arcticfox.dev
└ 72.37.200.0/24	256	DOXX-NET-CORPORATION-GTT	unknown	—	—	—
└ 72.37.201.0/24	256	MZIMA03-CUST-SIRIUSTELE02	Sirius Telecommunications, Inc. (SIRIUS-12) · US	Reassigned	Dec 5, 2006	—
└ 72.37.202.0/23	512	MZIMA03-CUST-3RDECHELON01	unknown	—	—	—
└ 72.37.204.0/22	1,024	NET-V4-GTT-BLK29	Arctic Fox Networks Inc (AFN-35) · US	Reallocated	Feb 23, 2026	dmcanotice@arcticfox.dev
└ 72.37.208.0/22	1,024	NET-V4-GTT-BLK30	Arctic Fox Networks Inc (AFN-35) · US	Reallocated	Feb 23, 2026	dmcanotice@arcticfox.dev
└ 72.37.212.0/24	256	CPANELLOGIN-GTT	CpanelLogin.net (CPANE-2) · US	Reassigned	Oct 14, 2015	support@cpanellogin.net
└ 72.37.213.0/24	256	DOXX-NET-CORPORATION-GTT	unknown	—	—	—
└ 72.37.214.0/23	512	GTT-CUSTOMER	IPNetZone (IPNET-1) · US	Reallocated	Feb 25, 2026	ipabuse@unsi.net
└ 72.37.216.0/23	512	MZIMA03-CUST-ZEROLAG01	Zerolag Communications, Inc. (ZLC-3) · US	Reallocated	May 21, 2007	noc@as46562.net
└ 72.37.216.32/27	32	NETBLK-ZEROLAG-72-37-216-32	unknown	—	—	—
└ 72.37.216.64/27	32	NETBLK-ZEROLAG-72-37-216-64	unknown	—	—	—
└ 72.37.216.96/28	16	NETBLK-ZEROLAG-72-37-216-96	unknown	—	—	—
└ 72.37.216.112/28	16	NETBLK-ZEROLAG-72-37-216-112	unknown	—	—	—
└ 72.37.217.0/28	16	NETBLK-ZEROLAG-72-37-217-0	unknown	—	—	—
└ 72.37.217.16/28	16	PLAYTECHTONICS	unknown	—	—	—
└ 72.37.217.32/27	32	NETBLK-ZEROLAG-72-37-217-32	unknown	—	—	—
└ 72.37.217.64/27	32	NETBLK-ZEROLAG-72-37-217-64	unknown	—	—	—
└ 72.37.217.128/26	64	NETBLK-ZEROLAG-72-37-217-128	unknown	—	—	—
└ 72.37.218.0/23	512	MZIMA03-CUST-NOBISTECHNOLOGYLLC06	unknown	—	—	—
└ 72.37.220.0/24	256	DOXX-NET-CORPORATION-GTT	unknown	—	—	—
└ 72.37.221.0/24	256	MZIMA03-CUST-NOBISTECHNOLOGYLLC04	unknown	—	—	—
└ 72.37.222.0/23	512	MZIMA03-CUST-NOBISTECHNOLOGYLLC05	unknown	—	—	—
└ 72.37.224.0/21	2,048	MZIMA03-CUST-NOBISTECHNOLOGYLLC01	Nobis Technology Group, LLC (NTGL) · US	Reallocated	Jan 30, 2007	abuse@us.leaseweb.com
└ 72.37.228.128/28	16	NOBIS-CUSTBLK-72-37-228-128	unknown	—	—	—
└ 72.37.229.208/28	16	NOBIS-CUSTBLK-72-37-229-208	unknown	—	—	—
└ 72.37.229.240/28	16	NOBIS-CUSTBLK-72-37-229-240	unknown	—	—	—
└ 72.37.232.0/24	256	DOXX-NET-CORPORATION-GTT	unknown	—	—	—
└ 72.37.233.0/24	256	GLENCORE-GTT	unknown	—	—	—
└ 72.37.234.64/28	16	GTT-CUSTOMER	unknown	—	—	—
└ 72.37.235.0/24	256	DOXX-NET-CORPORATION-GTT	unknown	—	—	—
└ 72.37.236.0/24	256	DOXX-NET-CORPORATION-GTT	unknown	—	—	—
└ 72.37.237.0/24	256	MZIMA03-CUST-NOBISTECHNOLOGYLLC02	unknown	—	—	—
└ 72.37.238.0/23	512	GTT-CUSTOMER	IPNetZone (IPNET-1) · US	Reallocated	Feb 25, 2026	ipabuse@unsi.net
└ 72.37.240.0/23	512	GTT-CUSTOMER	IPNetZone (IPNET-1) · US	Reallocated	Feb 25, 2026	ipabuse@unsi.net
└ 72.37.242.0/23	512	MZIMA03-CUST-NOBISTECHNOLOGYLLC07	unknown	—	—	—
└ 72.37.244.0/24	256	GLENCORE-GTT	unknown	—	—	—

← Previous1–200 of 216 · page 1 of 2Next →

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

32,768 addresses

Type	Addresses	Share	Ranges
Unknown	11,468	35%	23
Internet provider	8,704	27%	8
ISP proxyanonymizer	6,144	19%	16
Residential	3,584	11%	8
Business	1,076	3.3%	13
Datacenter proxyanonymizer	768	2.3%	3
Hosting	768	2.3%	2
VPNanonymizer	256	0.78%	1

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Origin network

AS3257

Name: GTT Communications Inc.
Type: Internet provider
Registered: Sep 30, 1994
Domain: gtt.net
Website: www.gtt.net
Industry: Internet Service Provider (ISP)
Spamhaus ASN-DROP: not listed
VPN servers: 244

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS25973 not the origin	RADB	MZIMA-NETBLK-03	MAINT-AS3257	Nov 13, 2023

IRR inside

Route objects inside

Prefix	Origin	Registry	Description	Maintainer	Modified
72.37.128.0/18	AS25973	RADB	Mzima-03	MAINT-AS3257	Nov 13, 2023
72.37.131.0/24	AS25973	RADB	Mzima/Secaucus	MAINT-AS3257	Nov 13, 2023
72.37.132.0/24	AS25973	RADB	Mzima/New York	MAINT-AS3257	Nov 13, 2023
72.37.156.0/24	AS25973	RADB	San Jose infrastructure netblock/Mzima	MAINT-AS3257	Nov 13, 2023
72.37.158.0/24	AS36169	RADB	proxy route for Total Call by MZIMA	MAINT-AS3257	Nov 13, 2023
72.37.171.0/24	AS4436	RADB	proxy object for Scansafe by GTT	MAINT-AS3257	Nov 13, 2023
72.37.173.0/24	AS16740	ARIN	PacketExchange, Inc	MNT-PACKE-25	Apr 6, 2026
72.37.200.0/21	AS25973	RADB	Mzima-03	MAINT-AS3257	Nov 13, 2023
72.37.200.0/24	AS16740	ARIN	PacketExchange, Inc	MNT-PACKE-25	Apr 6, 2026
72.37.208.0/21	AS25973	RADB	Mzima-03	MAINT-AS3257	Nov 13, 2023
72.37.213.0/24	AS16740	ARIN	PacketExchange, Inc	MNT-PACKE-25	Apr 6, 2026
72.37.216.0/21	AS25973	RADB	Infrastructure route	MAINT-AS3257	Nov 13, 2023
72.37.218.0/23	AS7203	ARIN	LEASEWEB USA INC	MNT-NTGL	Aug 9, 2022
72.37.220.0/24	AS16740	ARIN	PacketExchange, Inc	MNT-PACKE-25	Apr 6, 2026
72.37.222.0/23	AS7203	ARIN	LEASEWEB USA INC	MNT-NTGL	Aug 9, 2022
72.37.224.0/21	AS13354	RADB	NOBIS-11-ROUTE	MAINT-AS13354	Nov 13, 2023
72.37.224.0/21	AS25973	RADB	Mzima Networks backbone	MAINT-AS3257	Nov 13, 2023
72.37.224.0/21	AS7203	ARIN	5350 East High Street	MNT-NTGL	Sep 3, 2026
72.37.232.0/21	AS25973	RADB	Mzima-03	MAINT-AS3257	Nov 13, 2023
72.37.232.0/22	AS25973	RADB	Mzima regional network	MAINT-AS3257	Nov 13, 2023
72.37.232.0/24	AS16740	ARIN	PacketExchange, Inc	MNT-PACKE-25	Apr 6, 2026
72.37.235.0/24	AS16740	ARIN	PacketExchange, Inc	MNT-PACKE-25	Apr 6, 2026
72.37.236.0/22	AS25973	RADB	Mzima customer netblock	MAINT-AS3257	Nov 13, 2023
72.37.236.0/24	AS16740	ARIN	PacketExchange, Inc	MNT-PACKE-25	Apr 6, 2026
72.37.237.0/24	AS13354	RADB	NOBIS-10-ROUTE	MAINT-AS13354	Nov 13, 2023
72.37.240.0/21	AS25973	RADB	Mzima-03	MAINT-AS3257	Nov 13, 2023
72.37.240.0/22	AS25973	RADB	Mzima regional network	MAINT-AS3257	Nov 13, 2023
72.37.242.0/23	AS25973	RADB	Mzima customer netblock	MAINT-AS3257	Nov 13, 2023
72.37.242.0/23	AS27411	RADB	LeaseWeb USA, Inc.	MAINT-AS16265	Jan 31, 2026
72.37.244.0/24	AS4436	RADB	proxy object for Scansafe by GTT	MAINT-AS3257	Nov 13, 2023
72.37.245.0/24	AS16740	ARIN	PacketExchange, Inc	MNT-PACKE-25	Apr 6, 2026
72.37.248.0/21	AS25973	RADB	Mzima-03	MAINT-AS3257	Nov 13, 2023
72.37.248.0/24	AS4436	RADB	proxy object for Scansafe by GTT	MAINT-AS3257	Nov 13, 2023
72.37.250.0/24	AS16740	ARIN	PacketExchange, Inc	MNT-PACKE-25	Apr 6, 2026
72.37.252.0/24	AS10940	RADB	proxy route for FONALITY by MZIMA	MAINT-AS3257	Nov 13, 2023
72.37.253.0/24	AS32751	RADB	PNAP-SEA nuclearfallout	MAINT-AS1828	Nov 13, 2023
72.37.255.0/24	AS18508	RADB	Force10 Networks	MAINT-AS3257	Nov 13, 2023

72.37.128.0/17

Residential-proxy exits

Exits seen per day

/24s with the most always-on exits

Proxy providers listing exits

Path

Operators, sellers and brokers

Proxy providers

VPN services

IP brokers

Owners leasing their own space

Lineage

From the registry to its use

Announcements

More-specifics by size

Announcements inside

Registrations in this block

Composition

Address share

Types across the prefix

Network & registry

AS3257

Who has announced this prefix

Routing history

History

Route objects on the exact prefix

Route objects inside

Registration for this announcement

Abuse contact