Data as of Nov 12, 2026
206.233.128.0/19
No anonymizer space · no proxy exits in 30 daysGTT Communications Inc.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|---|
| 206.233.128.0/17 | AS3257 | Unknown | ||||
| 206.232.0.0/14 since May 2005 | AS174 | Internet provider | IP broker Aventice (part) | 253 195 always on | Cogent Communications, LLC |
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 |
|---|---|---|---|---|---|---|
| 206. | 458,752 | COGENT-206-232-233-234-235-236-237-238-16 | Cogent Communications, LLC (COGC) · US | Direct Allocation | Nov 6, 1995 | abuse@ |
| └ 206.233.129.0/24 | 256 | NETBLK-PSINET-C-129 | unknown | — | — | — |
| └ 206.233.130.0/24 | 256 | NETBLK-PSINET-C-130 | unknown | — | — | — |
| └ 206.233.131.0/24 | 256 | NETBLK-PSINET-C-131 | unknown | — | — | — |
| └ 206.233.133.0/24 | 256 | NETBLK-PSINET-C-133 | unknown | — | — | — |
| └ 206.233.134.0/24 | 256 | NETBLK-PSINET-C-134 | unknown | — | — | — |
| └ 206.233.135.0/24 | 256 | NETBLK-PSINET-C-135 | unknown | — | — | — |
| └ 206.233.136.0/24 | 256 | NETBLK-PSINET-C-136 | unknown | — | — | — |
| └ 206.233.138.0/24 | 256 | NETBLK-PSINET-C-138 | unknown | — | — | — |
| └ 206.233.139.0/24 | 256 | NETBLK-PSINET-C-139 | unknown | — | — | — |
| └ 206.233.141.0/24 | 256 | NETBLK-PSINET-C-141 | unknown | — | — | — |
| └ 206.233.142.0/24 | 256 | NETBLK-PSINET-C-142 | unknown | — | — | — |
| └ 206.233.143.0/24 | 256 | NETBLK-PSINET-C-143 | unknown | — | — | — |
| └ 206.233.144.0/24 | 256 | NETBLK-PSINET-C-144 | unknown | — | — | — |
| └ 206.233.145.0/24 | 256 | NETBLK-PSINET-C-145 | unknown | — | — | — |
| └ 206.233.149.0/24 | 256 | NETBLK-PSINET-C-149 | unknown | — | — | — |
| └ 206.233.150.0/24 | 256 | NETBLK-PSINET-C-150 | unknown | — | — | — |
| └ 206.233.151.0/24 | 256 | NETBLK-PSINET-C-151 | unknown | — | — | — |
| └ 206.233.152.0/24 | 256 | NETBLK-PSINET-C-152 | unknown | — | — | — |
| └ 206.233.153.0/24 | 256 | NETBLK-PSINET-C-153 | unknown | — | — | — |
| └ 206.233.154.0/24 | 256 | NETBLK-PSINET-C-154 | unknown | — | — | — |
| └ 206.233.155.0/24 | 256 | NETBLK-PSINET-C-155 | unknown | — | — | — |
| └ 206.233.157.0/24 | 256 | NETBLK-PSINET-C-157 | unknown | — | — | — |
| └ 206.233.158.0/24 | 256 | NETBLK-PSINET-C-158 | unknown | — | — | — |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
8,192 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 5,888 | 72% | 23 | |
| Unknown | 2,304 | 28% | 7 |
Network & registry
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
- 251
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- First seen
- Before our records
- Origin networks
- 0
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 206.233.128.0/17 | AS3257 | /17 | ARIN | Too specific |
| 206.233.128.0/17 | AS399089 | /17 | ARIN | Another network |
Whois
Registration for this announcement
- Range
- Not stated by the registry
- Netname
- COGENT-206-232-233-234-235-236-237-238-16
- Registrant
- Cogent Communications, LLC (COGC)
- Organization
- Not stated by the registry
- Created
- Nov 6, 1995
- RIR
- ARIN
- Country
- US
- Delegated
- Nov 6, 1995
- Status
- assigned