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AS4134China Telecom Backbone

ChinaRegistryAPNICTypeCarrier

As of 26th September 2026, AS4134 (China Telecom Backbone), a transit carrier registered in China with APNIC, originates 732 IPv4 prefixes covering 112M addresses and 632 IPv6 prefixes. By IPv4 address space that makes it the 4th-largest of the 79,480 networks we see originating IPv4, and the largest of 607 in China. It is seen behind 48 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS3356 (Lumen (Level 3)), and in front of 202 downstream networks. 93% of its announcements have a valid RPKI ROA; 5 are RPKI-invalid. 98% 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

732

IPv6 prefixes

632

IPv4 addresses

112M

IPv6 /64s

25.2T

Upstream graph

The networks AS4134 is seen behind, one and two hops out, drawn from real AS paths.

AS4134Toward the internet core
Upstream graph for AS4134: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS4134China Telecom Bac…This networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3356Lumen (Level 3)AS3491PCCW Global (HK) …AS6453TATA Communicatio…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS3130RGnet OUAS49544i3D.net B.VAS3549Lumen (fka. Globa…AS8220COLTAS35280F5 Networks SARL

Networks observed one and two hops upstream of AS4134 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

567

adjacent networks

Upstreams
488%
Peers
31756%
Downstreams
20236%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 48.

Upstreams of AS4134
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer382,71185
AS3356Lumen (Level 3)USPeer265,036116
AS2914NTT America, Inc.USPeer254,19161
AS6453TATA Communications (America) IncUSPeer201,94363
AS3491PCCW Global (HK) Ltd.HKPeer118,37522
AS3257GTT Communications Inc.USPeer93,41655
AS174Cogent Communications, LLCUSPeer76,985116
AS6939Hurricane Electric LLCUSPeer70,03820
AS2497Internet Initiative Japan Inc.JPPeer69,7996
AS25091IP-Max SACHPeer60,5705

Prefixes

All 1,364

The largest blocks AS4134 originates, widest first.

Largest prefixes originated by AS4134
PrefixAddressesVisibility
183.0.0.0/104.2M80/81
49.64.0.0/112.1M80/81
113.64.0.0/112.1M80/81
115.192.0.0/112.1M80/81
180.96.0.0/112.1M80/81
183.128.0.0/112.1M80/81
14.16.0.0/121M80/81
14.112.0.0/121M80/81
14.144.0.0/121M80/81
14.208.0.0/121M80/81

Routing health

How AS4134'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

  • Valid92.8%1,266
  • Invalid0.4%5
  • No ROA6.8%93

Propagation

  • Globally propagated90% of full-feed peers or more97.7%1,333
  • Partially propagated40% to 90%<0.1%1
  • Seen by few peersUnder 40%2.2%30

Prefix sizes

IPv4 — 732 prefixes

IPv6 — 632 prefixes

  • /2017.6T × /640.2%1
  • /241.1T × /640.2%1
  • /2868.7B × /641.1%7
  • /2934.4B × /646.2%39
  • /3017.2B × /6432.8%207
  • /318.6B × /648.7%55
  • /324.3B × /6420.3%128
  • /332.1B × /649.2%58
  • /341.1B × /641.6%10
  • /36268M × /642.8%18
  • /4016.8M × /643.6%23
  • /418.4M × /640.2%1
  • /441M × /645.4%34
  • /4865.5k × /647.9%50

Recent changes

Announcements that started or stopped since 27th Aug 2026.

12 announced and 19 withdrawn in all; the most recent are shown.

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