BGP map for 202.121.0.0/16

202.121.0.0/16 is announced by 2 networks, mostly AS4538 China Education and Research Network Center and seen by 332 peers of 23 RIPE RIS collectors, over 264 different AS paths. Its busiest upstreams are AS6453 TATA COMMUNICATIONS (AMERICA) INC (61%), AS4635 Hong Kong Internet Exchange--Route Server 1 (15%) and AS174 Cogent Communications, LLC (14%). The most common path, used by 11 peers, is AS24482 AS4538.

Routes checked 14:11:03 UTC

No change in the origin, the upstreams or the number of peers since 03:22 UTC on 26 Oct, when this site first looked at 202.121.0.0/16.

AS-path graph toward 202.121.0.0/16

origin Tier 1Tier 2transitedge network prefix best path: chosen by 11 of 332 peers (3%) number on a line = peers using that link RIS data up to 14:10 UTC what the colours mean 12 of 264 paths drawn 4 quieter networks left out

View JSON Raw upstream

332collector peers

23RIS collectors

264distinct AS paths

4.0average AS hops, 2 to 7

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS6453 TATA COMMUNICATIONS (AMERICA) INC	204	61%
AS4635 Hong Kong Internet Exchange--Route Server 1	51	15%
AS174 Cogent Communications, LLC	45	14%
AS24482 SG.GS	11	3%
AS4837 CHINA UNICOM China169 Backbone	8	2%
AS4538 China Education and Research Network Center	6	2%
AS8359 MTS MTS PJSC	5	2%
AS36236 NetActuate, Inc	1	<1%
AS49544 i3Dnet i3D.net B.V	1	<1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS6453 TATA COMMUNICATIONS (AMERICA) INC	203	61%
AS4635 Hong Kong Internet Exchange--Route Server 1	51	15%
AS174 Cogent Communications, LLC	45	14%
AS1299 TWELVE99 Arelion Sweden AB	43	13%
AS6939 Hurricane Electric LLC	39	12%
AS2914 NTT America, Inc.	20	6%
AS3356 Level 3 Parent, LLC	18	5%
AS3303 SWISSCOM Swisscom (Schweiz) AG	16	5%
AS6461 Zayo Bandwidth	11	3%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	9	3%

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 origin	Peers	Share	Collectors
1	AS24482 AS4538	11	3%	11
2	AS8218 AS6461 AS6453 AS4538	7	2%	6
3	AS6461 AS6453 AS4538	5	2%	5
4	AS9002 AS6453 AS4538	4	1%	4
5	AS12779 AS174 AS4538	4	1%	4
6	AS199524 AS6453 AS4538	4	1%	4
7	AS13030 AS1299 AS6453 AS4538	4	1%	4
8	AS2914 AS6453 AS4538	3	<1%	3
9	AS3491 AS6453 AS4538	3	<1%	3
10	AS25091 AS6453 AS4538	3	<1%	3
11	AS34927 AS1299 AS6453 AS4538	3	<1%	3
12	AS3214 AS10099 AS9929 AS4837 AS4538	3	<1%	3
13	AS34019 AS3303 AS6939 AS4635 AS4538	3	<1%	3
14	AS3257 AS6453 AS4538	2	<1%	2
15	AS6830 AS6453 AS4538	2	<1%	2
16	AS3320 AS6453 AS4538	2	<1%	2
17	AS25160 AS6453 AS4538	2	<1%	2
18	AS1299 AS6453 AS4538	2	<1%	2
19	AS14840 AS174 AS4538	2	<1%	2
20	AS6762 AS6453 AS4538	2	<1%	2
21	AS2497 AS4837 AS4538	2	<1%	2
22	AS58057 AS34549 AS6453 AS4538	2	<1%	2
23	AS49544 AS3356 AS6453 AS4538	2	<1%	1
24	AS31027 AS1299 AS6453 AS4538	2	<1%	1
25	AS35710 AS3320 AS6453 AS4538	2	<1%	2
26	AS49544 AS2914 AS6453 AS4538	2	<1%	2
27	AS8529 AS6939 AS4635 AS4538	2	<1%	2
28	AS48362 AS9002 AS6453 AS4538	2	<1%	2
29	AS47692 AS2914 AS6453 AS4538	2	<1%	2
30	AS51185 AS6762 AS6453 AS4538	2	<1%	2
31	AS47147 AS3320 AS6453 AS4538	2	<1%	2
32	AS47147 AS1299 AS6453 AS4538	2	<1%	2
33	AS59890 AS6939 AS4635 AS4538	2	<1%	2
34	AS142289 AS9583 AS4755 AS6453 AS4538	2	<1%	1
35	AS15547 AS3303 AS6939 AS4635 AS4538	2	<1%	2
36	AS51184 AS47692 AS2914 AS6453 AS4538	2	<1%	2
37	AS20612 AS8758 AS3303 AS6939 AS4635 AS4538	2	<1%	1
38	AS36236 AS4538	1	<1%	1
39	AS49544 AS4538	1	<1%	1
40	AS6453 AS4538	1	<1%	1
41	AS15692 AS174 AS4538	1	<1%	1
42	AS6894 AS174 AS4538	1	<1%	1
43	AS39122 AS174 AS4538	1	<1%	1
44	AS3170 AS174 AS4538	1	<1%	1
45	AS7018 AS6453 AS4538	1	<1%	1
46	AS55720 AS4635 AS4538	1	<1%	1
47	AS34549 AS6453 AS4538	1	<1%	1
48	AS58057 AS174 AS4538	1	<1%	1
49	AS17639 AS4635 AS4538	1	<1%	1
50	AS61138 AS174 AS4538	1	<1%	1

50 of 264 paths shown. All of them are in the JSON.

More prefixes from AS4538

Routes seen by RIPE RIS in the 24 hours up to 9 Nov 2026, 14:10 UTC, fetched just now.