asn.dev

Autonomous system

AS27391 WASHCORP-AS1

Unclassified ARIN

IPv4 addresses 3.58K 4 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Washington Corporations

United States of America · AI-generated

business corporate us

The AS handle WASHCORP-AS1 is held by Washington Corporations.

What it's used for

  • The address space is registered under the netname WASHCORPNET-1 for all four announced prefixes, indicating a unified corporate estate.
  • The AS announces 3584 IPv4 addresses across 4 prefixes and maintains 3 observed neighbours, a ratio consistent with a business or internal corporate network rather than a transit provider.

Notable

  • All RDAP registrants for the announced prefixes are listed as Washington Corporations, matching the AS holder.
  • The inventory consists of four contiguous blocks: 216.240.112.0/22, 216.240.116.0/22, 216.240.120.0/22, and 216.240.124.0/23.
  • No IPv6 prefixes are currently announced in the inventory.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

3 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3356Level 3 Parent, LLC199
AS852TELUS Communications Inc.174
AS21947Blackfoot Telephone Cooperative, Inc.105

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 4 prefixes · 3.58K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America4

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS27391
Registry name
WASHCORP-AS1
Registrant
Washington Corporations
Abuse contact
pfauque@washcorp.com
Registered
2003-02-25
Last changed
2012-03-02
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 8 with no ROA
ROAs
0 authorising AS27391
ASPA
no ASPA record
IRR
100% registered · 8 of 8 announcements
Route objects
5 naming AS27391

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 1,784 prefixes, as published 2026-10-19. 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

Cross-check