bgpmap

BGP map for 157.255.40.0/21

157.255.40.0/21 is announced by AS136958 China Unicom Guangdong IP network and seen by 333 peers of 23 RIPE RIS collectors, over 253 different AS paths. All of those routes reach it through one upstream, AS4837 CHINA UNICOM China169 Backbone. The most common path, used by 10 peers, is AS24482 AS2914 AS3356 AS4837 AS136958.

Routes checked 01:41:34 UTC

No change in the origin, the upstreams or the number of peers since 01:41 UTC, when this site first looked at 157.255.40.0/21.

AS-path graph toward 157.255.40.0/21
BGP map of 157.255.40.0/2113 networks on the paths RIPE RIS collector peers use to reach 157.255.40.0/21. Best path, chosen by the most peers: AS24482 → AS2914 → AS3356 → AS4837 → AS136958.AS8218 → AS6461 · 7 routesAS6461 → AS4837 · 12 routesAS199524 → AS1299 · 6 routesAS1299 → AS4837 · 17 routesAS12779 → AS4837 · 4 routesAS13030 → AS1299 · 4 routesAS14840 → AS701 · 4 routesAS701 → AS4837 · 4 routesAS24482 → AS2914 · 10 routes · best pathAS2914 → AS3356 · 13 routes · best pathAS3356 → AS4837 · 16 routes · best pathAS4837 → AS136958 · 56 routes · best pathAS136958 → 157.255.40.0/21 · 56 routes · best path7AS8218 → AS6461 · 7 routes12AS6461 → AS4837 · 12 routes6AS199524 → AS1299 · 6 routes17AS1299 → AS4837 · 17 routes4AS12779 → AS4837 · 4 routes4AS13030 → AS1299 · 4 routes4AS14840 → AS701 · 4 routes4AS701 → AS4837 · 4 routes10AS24482 → AS2914 · 10 routes · best path13AS2914 → AS3356 · 13 routes · best path16AS3356 → AS4837 · 16 routes · best path56AS4837 → AS136958 · 56 routes · best path56AS136958 → 157.255.40.0/21 · 56 routes · best pathT2AS4837CHINA UNICOMChina169 BackboneAS4837 CHINA UNICOM China169 Backbone · Tier 2 · 56 routes · on the best pathAS136958China UnicomGuangdong IP networkAS136958 China Unicom Guangdong IP network · origin · 56 routes · on the best pathT1AS1299TWELVE99 ArelionSweden ABAS1299 TWELVE99 Arelion Sweden AB · Tier 1 · 17 routesT1AS3356Level 3 Parent, LLCAS3356 Level 3 Parent, LLC · Tier 1 · 16 routes · on the best pathT1AS2914NTT America, Inc.AS2914 NTT America, Inc. · Tier 1 · 13 routes · on the best pathT1AS6461Zayo BandwidthAS6461 Zayo Bandwidth · Tier 1 · 12 routesAS24482SG.GSAS24482 SG.GS · edge network · 10 routes · on the best pathAS8218NEO-ASN ZayoInfrastructure France SAAS8218 NEO-ASN Zayo Infrastructure France SA · edge network · 7 routesAS199524GCORE G-Core Labs S.A.AS199524 GCORE G-Core Labs S.A. · edge network · 6 routesAS12779ITGATE IT.Gate S.p.A.AS12779 ITGATE IT.Gate S.p.A. · edge network · 4 routesT2AS13030INIT7 Init7(Switzerland) Ltd.AS13030 INIT7 Init7 (Switzerland) Ltd. · Tier 2 · 4 routesAS14840BR.Digital TelecomAS14840 BR.Digital Telecom · edge network · 4 routesT1AS701Verizon BusinessAS701 Verizon Business · Tier 1 · 4 routes157.255.40.0/21157.255.40.0/21

origin Tier 1Tier 2edge network prefix best path: chosen by 10 of 333 peers (3%) number on a line = peers using that link RIS data up to 01:41 UTC what the colours mean 12 of 253 paths drawn 5 quieter networks left out

Download PNG View JSON Raw upstream

333collector peers
23RIS collectors
253distinct AS paths
4.2average AS hops, 2 to 6

Upstreams

Networks directly in front of the origin.

NetworkPeersShare
AS4837 CHINA UNICOM China169 Backbone333100%

Transit networks

Networks between the collector peer and the origin.

NetworkPeersShare
AS4837 CHINA UNICOM China169 Backbone332100%
AS1299 TWELVE99 Arelion Sweden AB9027%
AS3356 Level 3 Parent, LLC6921%
AS174 Cogent Communications, LLC299%
AS2914 NTT America, Inc.185%
AS6939 Hurricane Electric LLC185%
AS6453 TATA COMMUNICATIONS (AMERICA) INC155%
AS5511 Opentransit Orange S.A.124%
AS6461 Zayo Bandwidth93%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.72%

AS paths

Every distinct path the collector peers use, most common first. An ASN repeated to lengthen a path (a prepend) is shown once.

#Path, collector peer to originPeersShareCollectors
1AS24482AS2914AS3356AS4837AS136958103%10
2AS8218AS6461AS4837AS13695872%6
3AS199524AS1299AS4837AS13695862%6
4AS6461AS4837AS13695852%5
5AS12779AS4837AS13695841%4
6AS13030AS1299AS4837AS13695841%4
7AS14840AS701AS4837AS13695841%2
8AS47147AS1299AS4837AS13695841%4
9AS2914AS3356AS4837AS1369583<1%3
10AS3491AS3356AS4837AS1369583<1%3
11AS9002AS5511AS4837AS1369583<1%3
12AS34927AS1299AS4837AS1369583<1%3
13AS49544AS3356AS4837AS1369583<1%2
14AS51185AS6762AS4837AS1369583<1%3
15AS34019AS3303AS4837AS1369583<1%3
16AS48362AS1299AS4837AS1369583<1%3
17AS3214AS10099AS9929AS4837AS1369583<1%3
18AS3257AS4837AS1369582<1%2
19AS6830AS4837AS1369582<1%2
20AS1299AS4837AS1369582<1%2
21AS6762AS4837AS1369582<1%2
22AS51184AS4837AS1369582<1%2
23AS2497AS4837AS1369582<1%2
24AS3320AS3356AS4837AS1369582<1%2
25AS62167AS3356AS4837AS1369582<1%2
26AS25160AS174AS4837AS1369582<1%2
27AS42473AS1299AS4837AS1369582<1%2
28AS48185AS1299AS4837AS1369582<1%2
29AS31027AS1299AS4837AS1369582<1%1
30AS35280AS3356AS4837AS1369582<1%2
31AS14907AS1299AS4837AS1369582<1%2
32AS15547AS174AS4837AS1369582<1%2
33AS25091AS1299AS4837AS1369582<1%2
34AS47692AS33891AS4837AS1369582<1%2
35AS49544AS1299AS4837AS1369582<1%2
36AS199524AS6453AS4837AS1369582<1%2
37AS59890AS3356AS4837AS1369582<1%2
38AS271253AS3356AS4837AS1369582<1%1
39AS58057AS34549AS5511AS4837AS1369582<1%2
40AS35710AS3320AS3356AS4837AS1369582<1%2
41AS20612AS9044AS1299AS4837AS1369582<1%1
42AS19151AS2914AS3356AS4837AS1369582<1%2
43AS142289AS9583AS4755AS6453AS4837AS1369582<1%1
44AS4837AS1369581<1%1
45AS5511AS4837AS1369581<1%1
46AS680AS4837AS1369581<1%1
47AS58299AS4837AS1369581<1%1
48AS12956AS4837AS1369581<1%1
49AS6453AS4837AS1369581<1%1
50AS8455AS4837AS1369581<1%1

50 of 253 paths shown. All of them are in the JSON.

More prefixes from AS136958

Routes seen by RIPE RIS in the 24 hours up to 16 Sep 2026, 01:41 UTC, fetched just now.