asn.dev

Autonomous system

AS18933 USCC-MPLS01

Unclassified ARIN

IPv4 addresses 82.94K 27 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

T-Mobile USA

United States of America · AI-generated

mobile cellular wireless uscc

The AS handle USCC-MPLS01 is held by T-Mobile USA, Inc.

What it's used for

  • The address space carries mobile cellular traffic, evidenced by reverse DNS entries such as 0-208-224-166.mobile.uscc.net and the netname USL-63.
  • The AS announces 82,944 IPv4 addresses across 27 prefixes with only 1 observed neighbour, a ratio characteristic of a large access or eyeball network rather than a transit provider.

Notable

  • All registrants for the largest prefixes are listed as T-Mobile USA, Inc., matching the AS holder.
  • The address inventory is heavily subdivided into /19, /20, and /22 blocks, primarily within the 166.182.0.0/16 and 166.224.192.0/18 ranges, reflecting site-by-site segmentation of a corporate mobile estate.
  • T-Mobile USA was formerly known as VoiceStream Wireless, rebranded in 2002 following its acquisition by Deutsche Telekom.

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 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6614T-Mobile USA, Inc.746

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-30, 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 27 prefixes · 82.94K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America27

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS18933
Registry name
USCC-MPLS01
Registrant
T-Mobile USA, Inc.
Abuse contact
abuse@t-mobile.com
Registered
2007-04-17
Last changed
2025-09-11
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 14 with no ROA
ROAs
0 authorising AS18933
ASPA
no ASPA record
IRR
0% registered · 0 of 14 announcements 13 other origin
Route objects
0 naming AS18933

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: 447 networks and 1,848 prefixes, as published 2026-10-31. 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