BGP map for 121.250.0.0/15

121.250.0.0/15 is announced by AS4538 China Education and Research Network Center and seen by 91 peers of 19 RIPE RIS collectors, over 73 different AS paths. Its busiest upstreams are AS4635 Hong Kong Internet Exchange--Route Server 1 (66%), AS24482 SG.GS (12%) and AS20965 GEANT (7%). The most common path, used by 11 peers, is AS24482 AS4538.

Routes checked 03:38:22 UTC

No change in the origin, the upstreams or the number of peers since 03:38 UTC, when this site first looked at 121.250.0.0/15.

91collector peers

19RIS collectors

73distinct AS paths

4.2average AS hops, 2 to 8

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS4635 Hong Kong Internet Exchange--Route Server 1	60	66%
AS24482 SG.GS	11	12%
AS20965 GEANT GEANT Vereniging	6	7%
AS23911 China Next Generation Internet Beijing IX	6	7%
AS8359 MTS MTS PJSC	4	4%
AS49544 i3Dnet i3D.net B.V	1	1%
AS36236 NetActuate, Inc	1	1%
AS9930 TIME dotCom Berhad No. 14, Jalan Majistret U1/26 Hicom Glenmarie Industrial Park 40150 Shah Alam Selangor, Malaysia	1	1%
AS39120 CONVERGENZE-AS Convergenze S.p.A.	1	1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS4635 Hong Kong Internet Exchange--Route Server 1	60	66%
AS6939 Hurricane Electric LLC	42	46%
AS3303 SWISSCOM Swisscom (Schweiz) AG	16	18%
AS8966 Etisalat-AS EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC	7	8%
AS20965 GEANT GEANT Vereniging	6	7%
AS23911 China Next Generation Internet Beijing IX	6	7%
AS8758 IWAY Iway AG	5	5%
AS35280 F5 F5 Networks SARL	5	5%
AS8359 MTS MTS PJSC	4	4%
AS20764 RASCOM-AS CJSC RASCOM	3	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	12%	11
2	AS34019 AS3303 AS6939 AS4635 AS4538	3	3%	3
3	AS35280 AS4635 AS4538	2	2%	2
4	AS8529 AS6939 AS4635 AS4538	2	2%	2
5	AS59890 AS6939 AS4635 AS4538	2	2%	2
6	AS15547 AS3303 AS6939 AS4635 AS4538	2	2%	2
7	AS35710 AS48200 AS23764 AS6939 AS4635 AS4538	2	2%	2
8	AS20612 AS8758 AS3303 AS6939 AS4635 AS4538	2	2%	1
9	AS49544 AS4538	1	1%	1
10	AS36236 AS4538	1	1%	1
11	AS55720 AS4635 AS4538	1	1%	1
12	AS55720 AS9930 AS4538	1	1%	1
13	AS17639 AS4635 AS4538	1	1%	1
14	AS18106 AS4635 AS4538	1	1%	1
15	AS45896 AS4635 AS4538	1	1%	1
16	AS45489 AS4635 AS4538	1	1%	1
17	AS212271 AS39120 AS4538	1	1%	1
18	AS680 AS20965 AS4538	1	1%	1
19	AS1103 AS20965 AS4538	1	1%	1
20	AS513 AS20965 AS4538	1	1%	1
21	AS559 AS20965 AS4538	1	1%	1
22	AS20764 AS8359 AS4538	1	1%	1
23	AS20205 AS6939 AS4635 AS4538	1	1%	1
24	AS49673 AS20764 AS8359 AS4538	1	1%	1
25	AS37721 AS6939 AS4635 AS4538	1	1%	1
26	AS3333 AS1103 AS20965 AS4538	1	1%	1
27	AS199524 AS58453 AS4635 AS4538	1	1%	1
28	AS3212 AS6939 AS4635 AS4538	1	1%	1
29	AS13781 AS6939 AS4635 AS4538	1	1%	1
30	AS142271 AS9304 AS4635 AS4538	1	1%	1
31	AS924 AS6939 AS4635 AS4538	1	1%	1
32	AS28910 AS58453 AS4635 AS4538	1	1%	1
33	AS25145 AS6939 AS4635 AS4538	1	1%	1
34	AS48919 AS6939 AS4635 AS4538	1	1%	1
35	AS21412 AS6939 AS4635 AS4538	1	1%	1
36	AS51873 AS6939 AS4635 AS4538	1	1%	1
37	AS200612 AS8966 AS4635 AS4538	1	1%	1
38	AS263237 AS6939 AS4635 AS4538	1	1%	1
39	AS6720 AS1853 AS20965 AS4538	1	1%	1
40	AS35280 AS8966 AS4635 AS4538	1	1%	1
41	AS35598 AS6939 AS4635 AS4538	1	1%	1
42	AS41722 AS20764 AS8359 AS4538	1	1%	1
43	AS1280 AS6939 AS4635 AS4538	1	1%	1
44	AS2500 AS7660 AS23911 AS4538	1	1%	1
45	AS25152 AS6939 AS4635 AS4538	1	1%	1
46	AS36924 AS35280 AS8966 AS4635 AS4538	1	1%	1
47	AS49134 AS53356 AS6939 AS4635 AS4538	1	1%	1
48	AS34927 AS56655 AS6939 AS4635 AS4538	1	1%	1
49	AS38229 AS23855 AS7660 AS23911 AS4538	1	1%	1
50	AS6881 AS15685 AS6939 AS4635 AS4538	1	1%	1

50 of 73 paths shown. All of them are in the JSON.

More prefixes from AS4538

Routes seen by RIPE RIS in the 24 hours up to 16 Sep 2026, 03:38 UTC, fetched just now.