Autonomous system
AS27370 CITYOFBOSTON
Unclassified ARIN
Interconnection
Peering at a glance
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Massachusetts Internet Exchange | Boston, United States | 206.53.143.73 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 32 prefixes · 70.14K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 32 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS27370- Registry name
- CITYOFBOSTON
- Registrant
- City of Boston
- Abuse contact
- noc@boston.gov
- Registered
- 2003-02-21
- Last changed
- 2024-05-03
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 93% valid · 13 valid, 1 with no ROA
- ROAs
- 13 authorising AS27370
- ASPA
- no ASPA record
- IRR
- 100% registered · 14 of 14 announcements
- Route objects
- 12 naming AS27370
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: 442 networks and 1,782 prefixes, as published 2026-10-16. 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