Autonomous system
AS23406 CHOATEHALLSTEWART
Unclassified ARIN
Summary
Choate, Hall & Stewart, LLP
business legal corporate leased
CHOATEHALLSTEWART is the autonomous system for Choate, Hall & Stewart, LLP, a Boston-based law firm.
What it's used for
- The address space is registered to Cogent Communications, LLC, with netnames
COGENT-Afor both announced prefixes. - The AS announces 512 IPv4 addresses across 2 prefixes and has 2 observed neighbours, indicating a small corporate network using leased transit or space.
Notable
- The registrants for both prefixes are Cogent Communications, LLC, which differs from the AS holder, Choate, Hall & Stewart, LLP.
- The address inventory consists of two /24 blocks, 38.97.97.0/24 and 38.146.221.0/24, both held by Cogent.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, 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 · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS23406- Registry name
- CHOATEHALLSTEWART
- Registrant
- CHOATE, HALL & STEWART, LLP
- Abuse contact
- bwilson@choate.com
- Registered
- 2007-02-15
- Last changed
- 2017-11-03
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 1 authorising AS23406
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 2 naming AS23406
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 1,783 prefixes, as published 2026-10-20. 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