BGP map for 121.193.0.0/16

121.193.0.0/16 is announced by AS4538 China Education and Research Network Center and seen by 376 peers of 23 RIPE RIS collectors, over 279 different AS paths. Its busiest upstreams are AS6939 Hurricane Electric LLC (46%), AS58453 China Mobile International Limited (27%) and AS2914 NTT America, Inc. (11%). The most common path, used by 22 peers, is AS6939 AS4538.

Routes checked 01:18:38 UTC

No change in the origin, the upstreams or the number of peers since 01:18 UTC, when this site first looked at 121.193.0.0/16.

AS-path graph toward 121.193.0.0/16

origin Tier 1Tier 2edge network prefix best path: chosen by 22 of 376 peers (6%) number on a line = peers using that link RIS data up to 01:17 UTC what the colours mean 12 of 279 paths drawn 4 quieter networks left out

Download PNG View JSON Raw upstream

376collector peers

23RIS collectors

279distinct AS paths

3.1average AS hops, 2 to 6

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS6939 Hurricane Electric LLC	173	46%
AS58453 China Mobile International Limited	103	27%
AS2914 NTT America, Inc.	41	11%
AS3491 PCCW Global (HK) Ltd.	29	8%
AS4635 Hong Kong Internet Exchange--Route Server 1	8	2%
AS20965 GEANT GEANT Vereniging	6	2%
AS4134 No.31,Jin-rong Street	5	1%
AS4837 CHINA UNICOM China169 Backbone	4	1%
AS23911 China Next Generation Internet Beijing IX	3	<1%
AS24482 SG.GS	1	<1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS6939 Hurricane Electric LLC	151	40%
AS58453 China Mobile International Limited	102	27%
AS2914 NTT America, Inc.	38	10%
AS3491 PCCW Global (HK) Ltd.	26	7%
AS4635 Hong Kong Internet Exchange--Route Server 1	8	2%
AS1299 TWELVE99 Arelion Sweden AB	7	2%
AS20965 GEANT GEANT Vereniging	6	2%
AS4134 No.31,Jin-rong Street	5	1%
AS9002 RETN-AS RETN Limited	5	1%
AS4837 CHINA UNICOM China169 Backbone	4	1%

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	AS6939 AS4538	22	6%	18
2	AS24482 AS58453 AS4538	10	3%	10
3	AS8218 AS58453 AS4538	7	2%	6
4	AS13030 AS3491 AS4538	4	1%	4
5	AS9002 AS58453 AS4538	4	1%	4
6	AS12779 AS58453 AS4538	4	1%	4
7	AS34927 AS6939 AS4538	4	1%	3
8	AS14840 AS58453 AS4538	4	1%	2
9	AS199524 AS58453 AS4538	4	1%	4
10	AS2914 AS4538	3	<1%	3
11	AS3491 AS4538	3	<1%	3
12	AS6461 AS2914 AS4538	3	<1%	3
13	AS48185 AS6939 AS4538	3	<1%	3
14	AS25091 AS58453 AS4538	3	<1%	3
15	AS48362 AS6939 AS4538	3	<1%	3
16	AS6830 AS2914 AS4538	2	<1%	2
17	AS3320 AS2914 AS4538	2	<1%	2
18	AS62167 AS6939 AS4538	2	<1%	2
19	AS25160 AS58453 AS4538	2	<1%	2
20	AS42473 AS6939 AS4538	2	<1%	2
21	AS1299 AS58453 AS4538	2	<1%	2
22	AS50628 AS58453 AS4538	2	<1%	2
23	AS14907 AS6939 AS4538	2	<1%	2
24	AS49544 AS6939 AS4538	2	<1%	2
25	AS31027 AS6939 AS4538	2	<1%	1
26	AS8529 AS4134 AS4538	2	<1%	2
27	AS51185 AS58453 AS4538	2	<1%	2
28	AS14907 AS3491 AS4538	2	<1%	2
29	AS34019 AS58453 AS4538	2	<1%	2
30	AS15547 AS58453 AS4538	2	<1%	2
31	AS51184 AS6939 AS4538	2	<1%	2
32	AS199524 AS2914 AS4538	2	<1%	2
33	AS6461 AS3491 AS4538	2	<1%	2
34	AS47692 AS2914 AS4538	2	<1%	2
35	AS49544 AS3491 AS4538	2	<1%	2
36	AS59890 AS6939 AS4538	2	<1%	2
37	AS20612 AS6939 AS4538	2	<1%	1
38	AS202032 AS6939 AS4538	2	<1%	2
39	AS271253 AS6939 AS4538	2	<1%	1
40	AS199524 AS6939 AS4538	2	<1%	2
41	AS2497 AS4837 AS4538	2	<1%	2
42	AS19151 AS58453 AS4538	2	<1%	2
43	AS58057 AS34549 AS2914 AS4538	2	<1%	2
44	AS142289 AS9583 AS58453 AS4538	2	<1%	1
45	AS3214 AS4809 AS4134 AS4538	2	<1%	2
46	AS47147 AS1299 AS58453 AS4538	2	<1%	2
47	AS24482 AS4538	1	<1%	1
48	AS36236 AS4538	1	<1%	1
49	AS49544 AS4538	1	<1%	1
50	AS58453 AS4538	1	<1%	1

50 of 279 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, 01:17 UTC, fetched just now.