Autonomous system
AS22283 SIDLEY
Unclassified ARIN
Summary
Sidley Austin LLP
business legal corporate internal
The AS handle SIDLEY is held by Sidley Austin LLP, a global law firm.
What it's used for
- The address space carries internal corporate infrastructure, evidenced by netnames such as
NETBLK-SIDLEYandSIDLEY-AUSTIN-LLP-198-232-35-0registered to the firm. - The inventory consists of 10 IPv4 prefixes totaling 6144 addresses, with 12 observed neighbours, indicating a small, self-contained corporate network rather than a transit or access provider.
Notable
- All registrants in the RDAP data match the announcer, consistently listing Sidley Austin LLP for every prefix.
- The address inventory is finely subdivided into /21, /22, /23, and /24 blocks, reflecting site-by-site segmentation typical of a large corporate estate.
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.
Transit providers
12 upstream, 0 downstream and 12 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 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 10 prefixes · 6.14K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 10 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS22283- Registry name
- SIDLEY
- Registrant
- Sidley Austin LLP
- Abuse contact
- abuse@sidley.com
- Registered
- 2001-08-28
- Last changed
- 2022-09-15
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 24 with no ROA
- ROAs
- 0 authorising AS22283
- ASPA
- no ASPA record
- IRR
- 46% registered · 11 of 24 announcements
- Route objects
- 14 naming AS22283
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 1,771 prefixes, as published 2026-10-15. 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