subnet.im

AS38019China Mobile Tianjin Province Network

ChinaRegistryAPNICTypeEyeball

As of 26th September 2026, AS38019 (China Mobile Tianjin Province Network), an access network registered in China with APNIC, originates 352 IPv4 prefixes covering 645k addresses and 81 IPv6 prefixes. By IPv4 address space that makes it the 613th-largest of the 79,516 networks we see originating IPv4, and the 48th-largest of 607 in China. It is seen behind 1 upstream network, most often AS9808 (China Mobile Backbone), and in front of 2 downstream networks. 94% of its announcements have a valid RPKI ROA; 3 are RPKI-invalid. 85% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

352

IPv6 prefixes

81

IPv4 addresses

645k

IPv6 /64s

43.7B

Upstream graph

The networks AS38019 is seen behind, one and two hops out, drawn from real AS paths.

AS38019Toward the internet core
Upstream graph for AS38019: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS38019China Mobile Tian…This networkAS9808China Mobile Back…AS58453China Mobile Inte…AS58807China Mobile Inte…

Networks observed one and two hops upstream of AS38019 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

8

adjacent networks

Upstreams
113%
Peers
563%
Downstreams
225%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS38019
NetworkCountryRelationshipPathsVantage pts
AS9808China Mobile BackboneCNPeer32,645144

Prefixes

All 433

The largest blocks AS38019 originates, widest first.

Largest prefixes originated by AS38019
PrefixAddressesVisibility
111.32.0.0/1665.5k81/81
111.33.0.0/1665.5k81/81
111.30.0.0/1732.8k81/81
111.31.0.0/1732.8k81/81
111.33.0.0/1732.8k81/81
139.220.128.0/1732.8k5/81
111.30.0.0/1816.4k81/81
111.30.64.0/1816.4k81/81
111.30.128.0/1816.4k81/81
111.30.192.0/1816.4k81/81

Routing health

How AS38019's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid93.8%406
  • Invalid0.7%3
  • No ROA5.5%24

Propagation

  • Globally propagated90% of full-feed peers or more84.5%366
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%15.5%67

Prefix sizes

IPv4 — 352 prefixes

IPv6 — 81 prefixes

  • /318.6B × /642.5%2
  • /324.3B × /647.4%6
  • /36268M × /641.2%1
  • /4016.8M × /6434.6%28
  • /441M × /642.5%2
  • /4865.5k × /6451.9%42

Recent changes

Announcements that started or stopped since 27th Aug 2026.

25 announced and 1 withdrawn in all; the most recent are shown.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.