BGP map for 187.1.176.0/21

187.1.176.0/21 is announced by AS21574 Century Telecom Ltda and seen by 324 peers of 23 RIPE RIS collectors, over 259 different AS paths. All of those routes reach it through one upstream, AS13786 Seabras 1 USA, LLC. The most common path, used by 7 peers, is AS24482 AS22356 AS13786 AS21574.

Routes checked 18:40:42 UTC

No change in the origin, the upstreams or the number of peers since 18:40 UTC, when this site first looked at 187.1.176.0/21.

AS-path graph toward 187.1.176.0/21

origin Tier 1Tier 2transitedge network prefix best path: chosen by 7 of 324 peers (2%) number on a line = peers using that link RIS data up to 18:40 UTC what the colours mean 12 of 259 paths drawn 5 quieter networks left out

View JSON Raw upstream

324collector peers

23RIS collectors

259distinct AS paths

4.3average AS hops, 2 to 7

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS13786 Seabras 1 USA, LLC	324	100%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS13786 Seabras 1 USA, LLC	323	100%
AS174 Cogent Communications, LLC	72	22%
AS3356 Level 3 Parent, LLC	56	17%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	41	13%
AS6453 TATA COMMUNICATIONS (AMERICA) INC	31	10%
AS22356 Durand do Brasil Ltda	23	7%
AS9002 RETN-AS RETN Limited	19	6%
AS1299 TWELVE99 Arelion Sweden AB	14	4%
AS6939 Hurricane Electric LLC	11	3%
AS6461 Zayo Bandwidth	8	2%

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 AS22356 AS13786 AS21574	7	2%	7
2	AS8218 AS6461 AS6762 AS13786 AS21574	6	2%	6
3	AS13030 AS13786 AS21574	4	1%	4
4	AS9002 AS13786 AS21574	4	1%	4
5	AS199524 AS174 AS13786 AS21574	4	1%	4
6	AS47147 AS9002 AS13786 AS21574	4	1%	4
7	AS14840 AS52925 AS22356 AS13786 AS21574	4	1%	2
8	AS24482 AS13786 AS21574	3	<1%	3
9	AS48185 AS3356 AS13786 AS21574	3	<1%	3
10	AS34019 AS3303 AS13786 AS21574	3	<1%	3
11	AS6461 AS6762 AS13786 AS21574	3	<1%	3
12	AS48362 AS9002 AS13786 AS21574	3	<1%	3
13	AS51185 AS13786 AS21574	2	<1%	2
14	AS6762 AS13786 AS21574	2	<1%	2
15	AS49544 AS13786 AS21574	2	<1%	2
16	AS199524 AS13786 AS21574	2	<1%	2
17	AS19151 AS13786 AS21574	2	<1%	2
18	AS917 AS60068 AS13786 AS21574	2	<1%	2
19	AS6830 AS174 AS13786 AS21574	2	<1%	2
20	AS6424 AS174 AS13786 AS21574	2	<1%	2
21	AS25160 AS174 AS13786 AS21574	2	<1%	2
22	AS42473 AS9002 AS13786 AS21574	2	<1%	2
23	AS1299 AS174 AS13786 AS21574	2	<1%	2
24	AS50628 AS3356 AS13786 AS21574	2	<1%	2
25	AS31027 AS3356 AS13786 AS21574	2	<1%	1
26	AS8529 AS6762 AS13786 AS21574	2	<1%	2
27	AS14907 AS6453 AS13786 AS21574	2	<1%	2
28	AS15547 AS174 AS13786 AS21574	2	<1%	2
29	AS12779 AS174 AS13786 AS21574	2	<1%	2
30	AS25091 AS6762 AS13786 AS21574	2	<1%	2
31	AS2914 AS6762 AS13786 AS21574	2	<1%	2
32	AS47692 AS33891 AS13786 AS21574	2	<1%	2
33	AS51185 AS6762 AS13786 AS21574	2	<1%	2
34	AS59890 AS60068 AS13786 AS21574	2	<1%	2
35	AS58057 AS34549 AS6453 AS13786 AS21574	2	<1%	2
36	AS49544 AS12956 AS22356 AS13786 AS21574	2	<1%	1
37	AS35710 AS3320 AS6453 AS13786 AS21574	2	<1%	2
38	AS49544 AS2914 AS6762 AS13786 AS21574	2	<1%	2
39	AS51184 AS47692 AS33891 AS13786 AS21574	2	<1%	2
40	AS20612 AS8758 AS8220 AS13786 AS21574	2	<1%	1
41	AS142289 AS9583 AS4755 AS6453 AS13786 AS21574	2	<1%	1
42	AS13786 AS21574	1	<1%	1
43	AS1828 AS13786 AS21574	1	<1%	1
44	AS37721 AS13786 AS21574	1	<1%	1
45	AS36236 AS13786 AS21574	1	<1%	1
46	AS18106 AS13786 AS21574	1	<1%	1
47	AS22356 AS13786 AS21574	1	<1%	1
48	AS6453 AS13786 AS21574	1	<1%	1
49	AS35280 AS13786 AS21574	1	<1%	1
50	AS21700 AS13786 AS21574	1	<1%	1

50 of 259 paths shown. All of them are in the JSON.

More prefixes from AS21574

Routes seen by RIPE RIS in the 24 hours up to 8 Nov 2026, 18:40 UTC, fetched 1 hour ago.