Data as of Nov 14, 2026

72.37.128.0/17

7,168 anonymizer addresses · 22%9 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

0.03% of its addresses · 30 days

Always-on exits

22% of its exits

Spread

5 of 128

/24s with at least one exit

Providers

selling exits here

Oct 15, 2026 – Nov 13, 2026

Exits seen per day

5.5K 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
72.37.134.0/24	0	2
72.37.129.0/24	0	1
72.37.157.0/24	0	1
72.37.181.0/24	0	1

Proxy providers listing exits

Ake.net
AnyIP
BirdProxies
BottingTools
ByteProxies
Byteful
CliProxy
ColaProxy
Decodo
EnigmaProxy
FlexyProxies
FloppyData
GloryCloud
GonzoProxy
IPPeak
Infatica
MangoProxy
MoMoProxy
NodeProxy
NovProxy
NovaProxy
Oxylabs
Proxiware
Proxy-Seller
ProxyEmpire
ProxyRack
Proxyma
RainProxy
Shifter
Thordata
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 Communications, NovadaVPN servicesnamed doxx.net

Unknown

Operators, sellers and brokers

Proxy providers

Name	Parent	Kind	In 72.37.128.0/17	/24s	Role
Bunny Communications		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
Internet provider
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 Communications
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 Communications			PacketExchange, Inc via Bunny Communications
72.37.134.0/23 since Oct 2011	AS23316	Residential			2	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 Communications			PacketExchange, Inc via Bunny Communications
72.37.139.0/24 since Mar 2026	AS5065	ISP proxy	Proxy providersoperated by Bunny Communications			PacketExchange, Inc via Bunny Communications
72.37.140.0/24 since Mar 2026	AS5065	ISP proxy	Proxy providersoperated by Bunny Communications			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 Communications			PacketExchange, Inc via Bunny Communications
72.37.146.0/24 since Mar 2026	AS5065	ISP proxy	Proxy providersoperated by Bunny Communications			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 Communications			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 Communications		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 Bunny Communicationssold 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 Communications			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 Communications			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
└ 72.37.245.0/24	256	DOXX-NET-CORPORATION-GTT	unknown	—	—	—
└ 72.37.246.0/23	512	GTT-CUSTOMER	IPNetZone (IPNET-1) · US	Reallocated	Feb 25, 2026	ipabuse@unsi.net
└ 72.37.248.0/24	256	GLENCORE-GTT	unknown	—	—	—
└ 72.37.249.0/24	256	DOXX-NET-CORPORATION-GTT	DOXX.NET Corporation (DC-1542) · US	Reallocated	Apr 6, 2026	hostmaster@doxx.net
└ 72.37.250.0/24	256	DOXX-NET-CORPORATION-GTT	unknown	—	—	—
└ 72.37.251.0/30	4	IMPACT-REDWOOD-GTT	unknown	—	—	—
└ 72.37.251.4/30	4	DISH-NETWORK-GTT	unknown	—	—	—
└ 72.37.251.16/28	16	IMPACT-REDWOOD-GTT	unknown	—	—	—
└ 72.37.251.32/28	16	DISH-PURCHASING-CORPORATION-RL-GTT	unknown	—	—	—
└ 72.37.251.48/28	16	DISH-PURCHASING-GTT	unknown	—	—	—
└ 72.37.251.64/26	64	GTT-GTT	unknown	—	—	—
└ 72.37.251.128/25	128	GTT-GTT	unknown	—	—	—
└ 72.37.252.0/24	256	GTT	unknown	—	—	—
└ 72.37.255.0/30	4	NETMANAGEMENT-GTT	unknown	—	—	—
└ 72.37.255.4/30	4	AMAZON-CORP-GTT	unknown	—	—	—
└ 72.37.255.32/27	32	GTT-ATL-GTT	unknown	—	—	—

← Previous201–216 of 216 · page 2 of 2Next →

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: 363

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