Autonomous system
AS13786 SEABORN
Unclassified ARIN
Summary
Seaborn Networks
transit telecom infrastructure
641 neighbours against two IPv4 prefixes, and a netname that is nothing but a six-digit number.
What it's used for
- A submarine cable operator's network. 3,072 addresses across two IPv4 prefixes, 27 IPv6 prefixes, and 641 observed BGP neighbours.
Notable
- The neighbour count is the highest in this range by a wide margin, from one of the smallest IPv4 footprints.
45.177.100.0/22is netname359764, a bare number, registered to the group's Brasil company.207.135.208.0/21is netnameSEABORN-V4and belongs to the American one.- Eight consecutive /39s under
2605:4a40tile a single /36 exactly, while the /36 beside them is announced whole. - Five of six sampled addresses answered, all hyphenated under one domain.
Interesting
- Six hundred neighbours is not a customer count, it is an interconnection count. A cable operator sells capacity between two continents, so its value is measured in who it touches rather than in how many addresses it holds. Two prefixes and 641 adjacencies is that business written in routing data.
- One block from each of two registries, held by two national companies of the same group, is what a cable landing at both ends requires: address space that is local wherever the equipment sits.
- Splitting one /36 into eight equal pieces while announcing its neighbour as a single route is two policies applied to identical amounts of space.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 14 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) São Paulo | São Paulo, Brazil | 187.16.217.161 |
| IX.br (PTT.br) Fortaleza | Fortaleza, Brazil | 45.68.74.142 |
| Equinix Internet Exchange Ashburn | Ashburn, United States | 206.126.236.247 |
| IX.br (PTT.br) Porto Alegre | Porto Alegre, Brazil | 177.52.39.24 |
| IX.br (PTT.br) Brasília | Brasília, Brazil | 45.184.144.127 |
| DE-CIX New York | New York, United States | 2001:504:36::35da:0:1 |
| IX.br (PTT.br) Curitiba | Curitiba, Brazil | 45.184.146.15 |
| New York International Internet Exchange | New York, United States | 198.32.160.93 |
Transit providers
11 upstream, 180 downstream and 373 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 3.07K addresses IPv6 27 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 29 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13786- Registry name
- SEABORN
- Registrant
- Seabras 1 USA, LLC
- Abuse contact
- noc@seabornnetworks.com
- Registered
- 2018-08-24
- Last changed
- 2025-10-13
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 17 valid, 0 with no ROA
- ROAs
- 4 authorising AS13786
- ASPA
- no ASPA record
- IRR
- 100% registered · 17 of 17 announcements
- Route objects
- 17 naming AS13786
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,775 prefixes, as published 2026-10-11. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere