AS27665Columbus Communications Trinidad Limited.
Trinidad & TobagoRegistryLACNICTypeEyeballAs of 10th November 2026, AS27665 (Columbus Communications Trinidad…), an access network registered in Trinidad & Tobago with LACNIC, originates 40 IPv4 prefixes covering 149k addresses and 39 IPv6 prefixes. By IPv4 address space that makes it the 1,698th-largest of the 80,723 networks we see originating IPv4, and the 2nd-largest of 14 in Trinidad & Tobago. It is seen behind 1 upstream network, most often AS23520 (Columbus Networks USA, Inc.), and in front of 8 downstream networks. 49% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS27665 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS27665 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.
Neighbouring networks
18
adjacent networks
- Upstreams
- 16%
- Peers
- 950%
- Downstreams
- 844%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS23520Columbus Networks USA, Inc. |  US | Peer | 15,723 | 137 |
Prefixes
All 79The largest blocks AS27665 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 161.0.224.0/20 | 4.1k | 75/76 |
| 161.0.240.0/20 | 4.1k | 75/76 |
| 181.188.0.0/20 | 4.1k | 75/76 |
| 181.188.16.0/20 | 4.1k | 75/76 |
| 181.188.32.0/20 | 4.1k | 75/76 |
| 181.188.48.0/20 | 4.1k | 75/76 |
| 181.188.64.0/20 | 4.1k | 75/76 |
| 181.188.80.0/20 | 4.1k | 75/76 |
| 181.188.96.0/20 | 4.1k | 75/76 |
| 181.188.112.0/20 | 4.1k | 75/76 |
Routing health
How AS27665's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.
RPKI origin validation
- Valid49.4%39
- Invalid0.0%0
- No ROA50.6%40
Propagation
- Globally propagated90% of full-feed peers or more100.0%79
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%0.0%0
Prefix sizes
IPv4 — 40 prefixes
IPv6 — 39 prefixes
- /2868.7B × /642.6%1
- /341.1B × /6417.9%7
- /36268M × /6479.5%31
Recent changes
Announcements that started or stopped since 11th Oct 2026.
No announcement by AS27665 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.