asn.dev

Autonomous system

AS20251 SOLARWINDSAUSTIN

Unclassified ARIN

IPv4 addresses 1.54K 3 prefixes
IPv6 prefixes 4 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 5 0 downstream
Flagged prefixes 0 none

Summary

SolarWinds

United States of America · AI-generated

business software corporate

SOLARWINDSAUSTIN is the autonomous system for SolarWinds North America, Inc.

What it's used for

  • The address space carries corporate infrastructure for SolarWinds, an IT management and observability software company, as indicated by netnames SOLARWINDS and TWTC-SOLARW.
  • The AS announces 1536 IPv4 addresses across 3 prefixes and 4 IPv6 prefixes, with only 5 observed neighbours, indicating a small internal corporate estate rather than a transit or access network.

Notable

  • Registrants generally align with the announcer, including SolarWinds North America, Inc. and SOLARWINDS 3RD TRY, though the latter suggests historical or administrative variations in registration.
  • The inventory consists of three distinct IPv4 blocks, including a /22 and two /24s, alongside four IPv6 prefixes, reflecting a segmented internal network structure.

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

5 upstream, 0 downstream and 8 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3356Level 3 Parent, LLC278
AS23005SWITCH, LTD122
AS15830Equinix (EMEA) Acquisition Enterprises B.V.63
AS11427Charter Communications Inc55
AS7018AT&T Enterprises, LLC4

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-22, 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 3 prefixes · 1.54K addresses IPv6 4 prefixes

CountryNamePrefixes
USUnited States of America7

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS20251
Registry name
SOLARWINDSAUSTIN
Registrant
SolarWinds North America, Inc.
Abuse contact
as@solarwinds.com
Registered
2008-05-27
Last changed
2012-03-02
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
9% valid · 1 valid, 10 with no ROA
ROAs
1 authorising AS20251
ASPA
no ASPA record
IRR
100% registered · 11 of 11 announcements
Route objects
16 naming AS20251

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 2026-10-23. 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