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

AS38019 announces 97 IPv4 prefixes covering 296,448 addresses and 21 IPv6 prefixes.

About this network

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.

Announced prefixes

• 36.134.64.0/23
• 36.137.46.0/23
• 36.138.219.0/24
• 39.134.140.0/24
• 39.134.142.0/24
• 39.136.145.0/24
• 39.136.146.0/24
• 39.137.68.0/23
• 39.137.70.0/24
• 39.137.230.0/23
• 39.144.81.0/24
• 39.144.82.0/23
• 111.30.0.0/17
• 111.30.168.0/24
• 111.30.188.0/23
• 111.30.192.0/18
• 111.31.13.0/24
• 111.31.24.0/23
• 111.31.28.0/22
• 111.31.32.0/24
• 111.31.35.0/24
• 111.31.64.0/24
• 111.31.76.0/24
• 111.31.80.0/24
• 111.31.88.0/23
• 111.31.124.0/24
• 111.31.128.0/18
• 111.31.192.0/22
• 111.31.197.0/24
• 111.31.198.0/23
• 111.31.204.0/22
• 111.31.208.0/20
• 111.31.224.0/21
• 111.31.232.0/22
• 111.31.236.0/23
• 111.31.240.0/20
• 111.32.0.0/17
• 111.33.0.0/18
• 111.33.64.0/21
• 111.33.72.0/23
• 111.33.74.0/24
• 111.33.76.0/22
• 111.33.80.0/20
• 111.33.96.0/21
• 111.33.104.0/22
• 111.33.108.0/23
• 111.33.111.0/24
• 111.33.112.0/21
• 111.33.120.0/23
• 111.33.122.0/24
• 111.33.126.0/23
• 111.33.128.0/21
• 111.33.136.0/23
• 111.33.140.0/23
• 111.33.143.0/24
• 111.33.144.0/21
• 111.33.152.0/22
• 111.33.156.0/23
• 111.33.158.0/24
• 111.33.160.0/22
• 111.33.164.0/23
• 111.33.166.0/24
• 111.33.168.0/21
• 111.33.176.0/22
• 111.33.180.0/23
• 111.33.190.0/23
• 111.33.192.0/18
• 112.54.240.0/22
• 112.57.74.0/23
• 112.57.76.0/22
• 117.131.128.0/18
• 117.131.192.0/22
• 117.131.200.0/24
• 117.131.206.0/24
• 117.131.216.0/21
• 117.131.224.0/19
• 117.136.1.0/24
• 117.136.54.0/23
• 120.255.0.0/17
• 120.255.128.0/20
• 120.255.144.0/23
• 139.220.128.0/18
• 139.220.196.0/23
• 139.220.200.0/21
• 139.220.208.0/20
• 139.220.224.0/20
• 139.220.244.0/22
• 139.220.248.0/21
• 211.103.80.0/20
• 211.137.144.0/20
• 211.137.160.0/20
• 223.104.7.0/24
• 223.104.227.0/24
• 223.104.228.0/23
• 223.104.230.0/24
• 223.160.134.0/23
• 223.161.202.0/23
• 2409:8002::/40
• 2409:8002:800::/40
• 2409:8002:1000::/40

and 18 more.

Upstream networks

• AS9808 China Mobile Communications Group Co., Ltd.

Downstream networks

• AS137718 Beijing Volcano Engine Technology Co., Ltd.
• AS23841 6/F, No.3 Huatian Road, New Technology Industry Area

Adjacent networks

• AS9808 China Mobile Communications Group Co., Ltd.
• AS137718 Beijing Volcano Engine Technology Co., Ltd.
• AS23841 6/F, No.3 Huatian Road, New Technology Industry Area