BGP map for 37.157.144.0/21

37.157.144.0/21 is announced by AS21412 CGATES-AS and seen by 381 peers of 23 RIPE RIS collectors, over 280 different AS paths. Its busiest upstreams are AS6939 Hurricane Electric LLC (42%), AS1299 TWELVE99 (7%) and AS9002 RETN-AS (7%). The most common path, used by 22 peers, is AS6939 AS21412.

Routes checked 03:40:15 UTC

No change in the origin, the upstreams or the number of peers since 03:40 UTC, when this site first looked at 37.157.144.0/21.

AS-path graph toward 37.157.144.0/21

origin Tier 2edge network prefix best path: chosen by 22 of 381 peers (6%) number on a line = peers using that link RIS data up to 03:40 UTC what the colours mean 12 of 280 paths drawn 4 quieter networks left out

Download PNG View JSON Raw upstream

381collector peers

23RIS collectors

280distinct AS paths

2.8average AS hops, 1 to 6

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS6939 Hurricane Electric LLC	159	42%
AS1299 TWELVE99 Arelion Sweden AB	28	7%
AS9002 RETN-AS RETN Limited	27	7%
AS174 Cogent Communications, LLC	23	6%
AS3356 Level 3 Parent, LLC	20	5%
AS24482 SG.GS	9	2%
AS12779 ITGATE IT.Gate S.p.A.	4	1%
AS14840 BR.Digital Telecom	4	1%
AS47147 AS-ANX Anexia Cloud Solutions GmbH	4	1%
AS34019 HIVANE Hivane Association	4	1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS6939 Hurricane Electric LLC	137	36%
AS1299 TWELVE99 Arelion Sweden AB	26	7%
AS9002 RETN-AS RETN Limited	23	6%
AS174 Cogent Communications, LLC	23	6%
AS3356 Level 3 Parent, LLC	20	5%
AS8758 IWAY Iway AG	2	<1%
AS9583 Sify Limited	2	<1%
AS4755 TATA Communications formerly VSNL is Leading ISP	2	<1%
AS6453 TATA COMMUNICATIONS (AMERICA) INC	2	<1%
AS34549 MEER-AS meerfarbig GmbH & Co. KG	2	<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 AS21412	22	6%	18
2	AS24482 AS21412	9	2%	9
3	AS8218 AS9002 AS21412	5	1%	5
4	AS9002 AS21412	4	1%	4
5	AS12779 AS21412	4	1%	4
6	AS14840 AS21412	4	1%	2
7	AS47147 AS21412	4	1%	4
8	AS13030 AS6939 AS21412	4	1%	4
9	AS51185 AS6939 AS21412	4	1%	4
10	AS199524 AS1299 AS21412	4	1%	4
11	AS34019 AS21412	3	<1%	3
12	AS25091 AS21412	3	<1%	3
13	AS48362 AS21412	3	<1%	3
14	AS2914 AS3356 AS21412	3	<1%	3
15	AS48185 AS6939 AS21412	3	<1%	3
16	AS34927 AS6939 AS21412	3	<1%	2
17	AS271253 AS6939 AS21412	3	<1%	2
18	AS14907 AS6939 AS21412	3	<1%	3
19	AS49544 AS6939 AS21412	3	<1%	3
20	AS6461 AS174 AS21412	3	<1%	3
21	AS21412	2	<1%	1
22	AS25160 AS21412	2	<1%	2
23	AS1299 AS21412	2	<1%	2
24	AS31027 AS21412	2	<1%	1
25	AS35710 AS21412	2	<1%	2
26	AS8529 AS21412	2	<1%	2
27	AS15547 AS21412	2	<1%	2
28	AS51184 AS21412	2	<1%	2
29	AS47692 AS21412	2	<1%	2
30	AS6461 AS1299 AS21412	2	<1%	2
31	AS3320 AS1299 AS21412	2	<1%	2
32	AS62167 AS6939 AS21412	2	<1%	2
33	AS42473 AS1299 AS21412	2	<1%	2
34	AS3214 AS6939 AS21412	2	<1%	2
35	AS50628 AS6939 AS21412	2	<1%	2
36	AS3491 AS174 AS21412	2	<1%	2
37	AS49544 AS9002 AS21412	2	<1%	2
38	AS8218 AS6939 AS21412	2	<1%	2
39	AS6762 AS9002 AS21412	2	<1%	2
40	AS59890 AS3356 AS21412	2	<1%	2
41	AS20612 AS8758 AS21412	2	<1%	1
42	AS202032 AS6939 AS21412	2	<1%	2
43	AS24482 AS6939 AS21412	2	<1%	2
44	AS199524 AS174 AS21412	2	<1%	2
45	AS2497 AS174 AS21412	2	<1%	2
46	AS19151 AS6939 AS21412	2	<1%	2
47	AS142289 AS9583 AS4755 AS6453 AS9002 AS21412	2	<1%	1
48	AS1828 AS21412	1	<1%	1
49	AS6424 AS21412	1	<1%	1
50	AS14630 AS21412	1	<1%	1

50 of 280 paths shown. All of them are in the JSON.

More prefixes from AS21412

Routes seen by RIPE RIS in the 24 hours up to 16 Sep 2026, 03:40 UTC, fetched just now.