Autonomous system
AS11980 BDO-USA-LLP
Unclassified ARIN
Summary
BDO USA
enterprise legacy
BDO-USA-LLP is BDO USA, the American member firm of the BDO international accounting and advisory network — audit, tax and consulting services. This is a professional-services enterprise, not a telecom or hosting operator.
What it's used for
- Corporate enterprise networking. The AS announces two adjacent
/23s,162.249.80.0/23and162.249.82.0/23— 1,024 addresses in total — both registered in ARIN directly to BDO USA. Holder and registrant are the same organization, so there is no third-party or leased space involved. - No IPv6 is announced from this AS.
Notable
- Two prefixes and two observed neighbours is a deliberately minimal footprint: the firm runs BGP so that a small block of internet-facing services (very likely edge, remote-access and mail infrastructure for a distributed professional-services firm) stays reachable if one upstream fails. Everything else a firm this size runs will sit behind SaaS providers and its upstreams' addressing, which is why the routed footprint is so much smaller than the organization.
- The neighbour count is the honest role signal here. A network that peered widely would show dozens or hundreds of neighbours; two means BDO buys transit and sells nothing.
Interesting
- Both prefixes come from
162.249.0.0/16, a block ARIN issued well after the early-internet era, which is a reminder that a low AS number says nothing about the age of the network behind it — the address space is modern even if the ASN is not.
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 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 1.02K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11980- Registry name
- BDO-USA-LLP
- Registrant
- BDO USA
- Abuse contact
- GRR01-IT-IS-NETWORK@bdo.com
- Registered
- 1999-02-22
- Last changed
- 2021-12-22
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS11980
- ASPA
- no ASPA record
- IRR
- 50% registered · 1 of 2 announcements
- Route objects
- 2 naming AS11980
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 1,779 prefixes, as published 2026-10-22. 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