BGP map for 72.9.180.0/22

72.9.180.0/22 is announced by AS2856 BT-UK-AS and seen by 333 peers of 23 RIPE RIS collectors, over 258 different AS paths. Its busiest upstreams are AS5400 BT (64%), AS9002 RETN-AS (11%) and AS6461 Zayo Bandwidth (4%). The most common path, used by 11 peers, is AS24482 AS6453 AS5400 AS2856.

Routes checked 20:10:29 UTC

No change in the origin, the upstreams or the number of peers since 20:10 UTC, when this site first looked at 72.9.180.0/22.

AS-path graph toward 72.9.180.0/22

origin Tier 1Tier 2edge network prefix best path: chosen by 11 of 333 peers (3%) number on a line = peers using that link RIS data up to 20:10 UTC what the colours mean 12 of 258 paths drawn 4 quieter networks left out

Download PNG View JSON Raw upstream

333collector peers

23RIS collectors

258distinct AS paths

3.6average AS hops, 1 to 6

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS5400 BT British Telecommunications Limited	214	64%
AS9002 RETN-AS RETN Limited	35	11%
AS6461 Zayo Bandwidth	13	4%
AS13030 INIT7 Init7 (Switzerland) Ltd.	11	3%
AS3303 SWISSCOM Swisscom (Schweiz) AG	6	2%
AS5405 INTERDOTLINK Inter.link GmbH	6	2%
AS60068 CDN77 Datacamp Limited	4	1%
AS8220 COLT COLT Technology Services Group Limited	4	1%
AS48185 team_blue team.blue NV	3	<1%
AS4455 BSO IX Reach Ltd	3	<1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS5400 BT British Telecommunications Limited	213	64%
AS1299 TWELVE99 Arelion Sweden AB	46	14%
AS3356 Level 3 Parent, LLC	34	10%
AS9002 RETN-AS RETN Limited	31	9%
AS6453 TATA COMMUNICATIONS (AMERICA) INC	15	5%
AS174 Cogent Communications, LLC	13	4%
AS3257 GTT-BACKBONE GTT Communications Inc.	11	3%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	9	3%
AS6461 Zayo Bandwidth	8	2%
AS6939 Hurricane Electric LLC	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 AS6453 AS5400 AS2856	11	3%	11
2	AS8218 AS5400 AS2856	7	2%	6
3	AS6461 AS2856	5	2%	5
4	AS13030 AS2856	4	1%	4
5	AS9002 AS2856	4	1%	4
6	AS47147 AS9002 AS2856	4	1%	4
7	AS12779 AS3257 AS5400 AS2856	4	1%	4
8	AS199524 AS1299 AS5400 AS2856	4	1%	4
9	AS48185 AS2856	3	<1%	3
10	AS3491 AS5400 AS2856	3	<1%	3
11	AS34019 AS3303 AS2856	3	<1%	3
12	AS48362 AS9002 AS2856	3	<1%	3
13	AS2914 AS3356 AS5400 AS2856	3	<1%	3
14	AS49544 AS3356 AS5400 AS2856	3	<1%	2
15	AS14840 AS3356 AS5400 AS2856	3	<1%	2
16	AS51185 AS2856	2	<1%	2
17	AS199524 AS2856	2	<1%	2
18	AS49544 AS2856	2	<1%	2
19	AS917 AS60068 AS2856	2	<1%	2
20	AS3257 AS5400 AS2856	2	<1%	2
21	AS6830 AS5400 AS2856	2	<1%	2
22	AS3320 AS5400 AS2856	2	<1%	2
23	AS1299 AS5400 AS2856	2	<1%	2
24	AS31027 AS5400 AS2856	2	<1%	1
25	AS8529 AS137409 AS2856	2	<1%	2
26	AS15547 AS4455 AS2856	2	<1%	2
27	AS6762 AS5400 AS2856	2	<1%	2
28	AS59890 AS60068 AS2856	2	<1%	2
29	AS35280 AS5400 AS2856	2	<1%	2
30	AS2497 AS5400 AS2856	2	<1%	2
31	AS19151 AS5400 AS2856	2	<1%	2
32	AS25160 AS1299 AS5400 AS2856	2	<1%	2
33	AS34927 AS1299 AS5400 AS2856	2	<1%	2
34	AS58057 AS1836 AS5400 AS2856	2	<1%	2
35	AS35710 AS3320 AS5400 AS2856	2	<1%	2
36	AS51184 AS1764 AS5405 AS2856	2	<1%	2
37	AS47692 AS33891 AS5400 AS2856	2	<1%	2
38	AS51185 AS6762 AS5400 AS2856	2	<1%	2
39	AS271253 AS3356 AS5400 AS2856	2	<1%	1
40	AS58057 AS34549 AS1299 AS5400 AS2856	2	<1%	2
41	AS142289 AS9583 AS4755 AS6453 AS5400 AS2856	2	<1%	1
42	AS2856	1	<1%	1
43	AS48070 AS2856	1	<1%	1
44	AS35266 AS2856	1	<1%	1
45	AS1828 AS2856	1	<1%	1
46	AS5400 AS2856	1	<1%	1
47	AS6424 AS2856	1	<1%	1
48	AS39122 AS2856	1	<1%	1
49	AS42473 AS2856	1	<1%	1
50	AS14630 AS2856	1	<1%	1

50 of 258 paths shown. All of them are in the JSON.

More prefixes from AS2856

Routes seen by RIPE RIS in the 24 hours up to 15 Sep 2026, 20:10 UTC, fetched just now.