asn.dev

Autonomous system

AS54638 NSO

Unclassified ARIN

IPv4 addresses 1.79K 3 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

NetSource One

United States of America · AI-generated

business managed-services it

NSO is the AS handle for NetSource One, Inc.

What it's used for

  • The address space carries managed IT services infrastructure, with netnames IP-TEAM148-136, IP-TEAM148-166, and NSO-IPV4-BLOCK indicating internal team and corporate blocks.
  • The AS announces 1792 IPv4 addresses across 3 prefixes and 1 IPv6 prefix, with only 1 observed neighbour, indicating a small, self-contained corporate network rather than a transit or access provider.
  • Traffic from this AS consists of office workers, server endpoints, and managed services infrastructure for NetSource One’s clients, supporting voice, data, virtualization, and security operations.

Notable

  • Registrants align with the announcer: IP TEAM DO NOT TOUCH PORTS for the 12.x blocks and NETSOURCE ONE, INC for the 23.x block, confirming consistent ownership.
  • The address inventory is finely subdivided into three distinct IPv4 prefixes and one IPv6 prefix, reflecting site-by-site or function-based segmentation typical of an internal 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

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

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

ASNetworkPaths seen
AS22974Charter Communications LLC574

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 3 prefixes · 1.79K addresses IPv6 1 prefixes

CountryNamePrefixes
USUnited States of America4

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS54638
Registry name
NSO
Registrant
NETSOURCE ONE, INC
Abuse contact
ed.french@nsoit.com
Registered
2012-04-16
Last changed
2012-04-16
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 10 with no ROA
ROAs
0 authorising AS54638
ASPA
no ASPA record
IRR
100% registered · 10 of 10 announcements
Route objects
4 naming AS54638

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