asn.dev

Autonomous system

AS38019 CMNET-V4TIANJIN-AS-AP tianjin Mobile Communication Company Limited

Unclassified APNIC

IPv4 addresses 266K 271 prefixes
IPv6 prefixes 348 counted as prefixes, not addresses
Countries 1 mostly CN
Exchanges 0 recorded by PCH
Upstreams 1 2 downstream
Flagged prefixes 0 none

Summary

China Mobile Tianjin

China · AI-generated

mobile residential china access

CMNET-V4TIANJIN-AS-AP is held by China Mobile Communications Group Co., Ltd.

What it's used for

  • The address space carries mobile subscriber traffic, evidenced by netnames CMNET and PBSL and reverse DNS entries like static.user.159.220.139.pbscn.net.
  • The AS announces 283,904 IPv4 addresses across 253 prefixes and 348 IPv6 prefixes, while maintaining only 5 observed neighbours, a ratio characteristic of an access network serving end-users rather than transit.
  • Traffic from this AS consists of mobile broadband subscribers in the Tianjin region of China, utilizing both IPv4 and IPv6 connectivity for consumer internet access.

Notable

  • Registrants for the majority of prefixes are IRT-CHINAMOBILE-CN and China Mobile Communications Group Co., Ltd, aligning with the AS holder, while some prefixes under the PBSL netname are registered to IRT-PBSL-CN.
  • The inventory is dominated by large /18 and /19 blocks in the 111.30.0.0/16 and 139.220.0.0/16 ranges, with finer subdivision into /20 and /21 prefixes for local distribution.

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, 2 downstream and 5 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS9808China Mobile Communications Group Co., Ltd.19,443

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 271 prefixes · 266K addresses IPv6 348 prefixes

CountryNamePrefixes
CNChina619

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS38019
Registry name
CMNET-V4TIANJIN-AS-AP
Registrant
China Mobile Communications Group Co., Ltd
Abuse contact
abuse@chinamobile.com
Registered
2008-09-04
Last changed
2026-08-14
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
94% valid · 406 valid, 24 with no ROA 3 RPKI-invalid
ROAs
412 authorising AS38019
ASPA
no ASPA record
IRR
99% registered · 428 of 433 announcements 1 other origin
Route objects
473 naming AS38019

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 1,773 prefixes, as published 2026-10-13. 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