BGP map for 201.163.136.0/21

201.163.136.0/21 is announced by AS11172 Alestra, S. de R.L. de C.V. and seen by 329 peers of 23 RIPE RIS collectors, over 250 different AS paths. Its busiest upstreams are AS174 Cogent Communications, LLC (94%), AS1299 TWELVE99 (6%) and AS8151 UNINET (<1%). The most common path, used by 10 peers, is AS24482 AS2914 AS174 AS11172.

Routes checked 03:23:38 UTC

No change in the origin, the upstreams or the number of peers since 03:23 UTC, when this site first looked at 201.163.136.0/21.

AS-path graph toward 201.163.136.0/21

origin Tier 1Tier 2edge network prefix best path: chosen by 10 of 329 peers (3%) number on a line = peers using that link RIS data up to 03:22 UTC what the colours mean 12 of 250 paths drawn 4 quieter networks left out

Download PNG View JSON Raw upstream

329collector peers

23RIS collectors

250distinct AS paths

3.8average AS hops, 2 to 6

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS174 Cogent Communications, LLC	309	94%
AS1299 TWELVE99 Arelion Sweden AB	19	6%
AS8151 UNINET	1	<1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS174 Cogent Communications, LLC	309	94%
AS3356 Level 3 Parent, LLC	40	12%
AS2914 NTT America, Inc.	29	9%
AS1299 TWELVE99 Arelion Sweden AB	17	5%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	17	5%
AS6461 Zayo Bandwidth	11	3%
AS6453 TATA COMMUNICATIONS (AMERICA) INC	10	3%
AS3320 DTAG Deutsche Telekom AG	9	3%
AS1764 NEXTLAYER-AS Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH	8	2%
AS3257 GTT-BACKBONE GTT Communications Inc.	7	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 AS2914 AS174 AS11172	10	3%	10
2	AS199524 AS174 AS11172	9	3%	9
3	AS8218 AS6461 AS174 AS11172	7	2%	6
4	AS6461 AS174 AS11172	5	2%	5
5	AS13030 AS1299 AS11172	4	1%	4
6	AS12779 AS174 AS11172	4	1%	4
7	AS14840 AS174 AS11172	4	1%	2
8	AS9002 AS3356 AS174 AS11172	4	1%	4
9	AS49544 AS3356 AS174 AS11172	4	1%	3
10	AS47147 AS3320 AS174 AS11172	4	1%	4
11	AS2914 AS174 AS11172	3	<1%	3
12	AS3491 AS174 AS11172	3	<1%	3
13	AS51185 AS6762 AS174 AS11172	3	<1%	3
14	AS48362 AS1764 AS174 AS11172	3	<1%	3
15	AS1299 AS11172	2	<1%	2
16	AS3257 AS174 AS11172	2	<1%	2
17	AS6830 AS174 AS11172	2	<1%	2
18	AS3320 AS174 AS11172	2	<1%	2
19	AS62167 AS174 AS11172	2	<1%	2
20	AS25160 AS174 AS11172	2	<1%	2
21	AS15547 AS174 AS11172	2	<1%	2
22	AS6762 AS174 AS11172	2	<1%	2
23	AS59890 AS174 AS11172	2	<1%	2
24	AS271253 AS174 AS11172	2	<1%	1
25	AS2497 AS174 AS11172	2	<1%	2
26	AS19151 AS174 AS11172	2	<1%	2
27	AS917 AS60068 AS174 AS11172	2	<1%	2
28	AS48185 AS2914 AS174 AS11172	2	<1%	2
29	AS50628 AS6453 AS174 AS11172	2	<1%	2
30	AS58057 AS34549 AS174 AS11172	2	<1%	2
31	AS31027 AS3356 AS174 AS11172	2	<1%	1
32	AS35710 AS3320 AS174 AS11172	2	<1%	2
33	AS49544 AS2914 AS174 AS11172	2	<1%	2
34	AS35280 AS3356 AS174 AS11172	2	<1%	2
35	AS34019 AS3303 AS174 AS11172	2	<1%	2
36	AS51184 AS1764 AS174 AS11172	2	<1%	2
37	AS20612 AS9044 AS174 AS11172	2	<1%	1
38	AS42473 AS9002 AS3356 AS174 AS11172	2	<1%	2
39	AS47692 AS33891 AS3356 AS174 AS11172	2	<1%	2
40	AS142289 AS9583 AS4755 AS6453 AS174 AS11172	2	<1%	1
41	AS6894 AS174 AS11172	1	<1%	1
42	AS31742 AS174 AS11172	1	<1%	1
43	AS6424 AS174 AS11172	1	<1%	1
44	AS39122 AS174 AS11172	1	<1%	1
45	AS12969 AS1299 AS11172	1	<1%	1
46	AS34927 AS1299 AS11172	1	<1%	1
47	AS3170 AS174 AS11172	1	<1%	1
48	AS7018 AS174 AS11172	1	<1%	1
49	AS50304 AS1299 AS11172	1	<1%	1
50	AS132825 AS174 AS11172	1	<1%	1

50 of 250 paths shown. All of them are in the JSON.

More prefixes from AS11172

Routes seen by RIPE RIS in the 24 hours up to 16 Sep 2026, 03:22 UTC, fetched just now.