asn.dev

Autonomous system

AS25739 ADTRAN - Adtran, Inc.

Unclassified ARIN

IPv4 addresses 512 2 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Adtran

United States of America · AI-generated

business vendor networking

The AS handle ADTRAN is held by Adtran, Inc., a US-based networking equipment vendor.

What it's used for

  • The address space carries internal corporate infrastructure, evidenced by the reverse DNS record s64.wifieval.adtran.com pointing to a Wi-Fi evaluation host.
  • The AS announces 512 IPv4 addresses across 2 prefixes and 2 IPv6 prefixes, with only 2 observed neighbours, indicating a small, isolated corporate estate rather than a transit or access network.

Notable

  • Registrants are mixed: ADTRAN-1 is registered to Adtran, Inc., while CENTURYLINK-LEGACY-QWEST-INET-7 is registered to CenturyLink Communications, LLC, suggesting the latter prefix is legacy space retained from a previous owner or lease.
  • The inventory consists of two /24 IPv4 blocks and two IPv6 prefixes, a compact footprint typical of a corporate headquarters or R&D site.

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

2 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3356Level 3 Parent, LLC168
AS7725Comcast Cable Communications, LLC16

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-07, 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 2 prefixes · 512 addresses IPv6 2 prefixes

CountryNamePrefixes
USUnited States of America4

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS25739
Registry name
ADTRAN
Registrant
Adtran, Inc.
Abuse contact
ryan.towry@adtran.com
Registered
2002-05-01
Last changed
2019-01-22
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 4 with no ROA
ROAs
0 authorising AS25739
ASPA
no ASPA record
IRR
0% registered · 0 of 4 announcements
Route objects
0 naming AS25739

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: 454 networks and 1,852 prefixes, as published 2026-11-08. 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