Data as of Nov 8, 2026
204.237.176.0/21
1,280 anonymizer addresses · 63% · ISP proxyGTT Communications Inc. · space held by PacketExchange, Inc
IPv4 market
Path
4 · Use
ISP proxy
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
Owners leasing their own space
| Name | In 204.237.176.0/21 | /24s |
|---|---|---|
| PacketExchange, Inc | 1,28063% | 5 |
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Leased from | Holder | RPKI |
|---|---|---|---|---|---|
| 204.237.177.0/24 since Mar 2026 | AS63099 | ISP proxy | IP broker ARISK | PacketExchange, Inc via Arisk Communications inc. | |
| 204.237.178.0/24 since Mar 2026 | AS63099 | ISP proxy | IP broker ARISK | PacketExchange, Inc via Arisk Communications inc. | |
| 204.237.180.0/23 since Mar 2026 | AS20001 | ISP proxy | IP broker IPNetZone | PacketExchange, Inc via IPNetZone | |
| 204.237.183.0/24 since Apr 2026 | AS63099 | ISP proxy | IP broker ARISK | PacketExchange, Inc via Arisk Communications inc. |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
2,048 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| ISP proxyanonymizer | 1,280 | 63% | 4 | |
| Unknown | 760 | 37% | 3 | |
| Business | 8 | 0.39% | 1 |
Network & registry
Announced by
Covering announcement 204.237.128.0/17
- Prefix
- 204.237.128.0/17
- Announced by
- AS3257 GTT Communications Inc.
- Type
- Unknown
- Anonymizer addresses
- none
- Proxy exits
- 12
- RPKI
- No RPKI
- Netname
- NETBLK-PACKETEXCHANGE-V4-08
- Registrant
- PacketExchange, Inc
- RIR
- ARIN
Origin network
AS3257
US
- 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
Routing timeline
Who has announced 204.237.128.0/17
204.237.128.0/17
Routing history
- Pattern
- Stable
- First seen
- Sep 2009
- Current origin since
- Apr 2015 · 12 yr
- Origin networks
- 2
- Last change of origin
- Apr 2015
Recorded history
History
- Handoffs
- 1
IRR
Route objects on 204.237.128.0/17
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS4436 not the origin | RADB | Mzima ARIN block 9 | MAINT-AS3257 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 204.
237. 128. 0/ 17 - Netname
- NETBLK-PACKETEXCHANGE-V4-08
- Registrant
- PacketExchange, Inc
- Organization
- PacketExchange, Inc (PACKE-25)
- Org address
- GTT Communications, Inc., McLean, VA, 22102
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-204-237-128-0-1
- Parent
- NET-204-0-0-0-0
- Created
- Sep 9, 2009
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 9, 2009
- Status
- assigned
Report abuse
Abuse contact
- abuse@
gtt. net - Name
- GTT Abuse Department
- Phone
- +1-703-442-5500
- Handle
- GAD46-ARIN