BGP map for 37.157.240.0/21

37.157.240.0/21 is announced by AS20860 IOMART-AS and seen by 339 peers of 23 RIPE RIS collectors, over 259 different AS paths. Its busiest upstreams are AS6461 Zayo Bandwidth (31%), AS174 Cogent Communications, LLC (26%) and AS6939 Hurricane Electric LLC (4%). The most common path, used by 8 peers, is AS199524 AS174 AS20860.

Routes checked 09:07:10 UTC

No change in the origin, the upstreams or the number of peers since 09:07 UTC, when this site first looked at 37.157.240.0/21.

AS-path graph toward 37.157.240.0/21

origin Tier 1Tier 2edge network prefix best path: chosen by 8 of 339 peers (2%) number on a line = peers using that link RIS data up to 09:07 UTC what the colours mean 12 of 259 paths drawn 2 quieter networks left out

Download PNG View JSON Raw upstream

339collector peers

23RIS collectors

259distinct AS paths

3.1average AS hops, 2 to 6

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS6461 Zayo Bandwidth	105	31%
AS174 Cogent Communications, LLC	88	26%
AS6939 Hurricane Electric LLC	14	4%
AS25091 IP-Max IP-Max SA	8	2%
AS24482 SG.GS	7	2%
AS34549 MEER-AS meerfarbig GmbH & Co. KG	7	2%
AS33891 CORE-BACKBONE Core-Backbone GmbH	6	2%
AS12779 ITGATE IT.Gate S.p.A.	5	1%
AS14840 BR.Digital Telecom	5	1%
AS5405 INTERDOTLINK Inter.link GmbH	5	1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS6461 Zayo Bandwidth	100	29%
AS174 Cogent Communications, LLC	88	26%
AS6939 Hurricane Electric LLC	14	4%
AS1299 TWELVE99 Arelion Sweden AB	11	3%
AS3356 Level 3 Parent, LLC	9	3%
AS2914 NTT America, Inc.	7	2%
AS34549 MEER-AS meerfarbig GmbH & Co. KG	6	2%
AS33891 CORE-BACKBONE Core-Backbone GmbH	6	2%
AS25091 IP-Max IP-Max SA	5	1%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	5	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	AS199524 AS174 AS20860	8	2%	8
2	AS24482 AS20860	7	2%	7
3	AS8218 AS6461 AS20860	7	2%	6
4	AS6461 AS20860	5	1%	5
5	AS12779 AS20860	4	1%	4
6	AS14840 AS20860	4	1%	2
7	AS13030 AS6461 AS20860	4	1%	4
8	AS9002 AS6461 AS20860	4	1%	4
9	AS24482 AS6461 AS20860	4	1%	4
10	AS47147 AS6461 AS20860	4	1%	4
11	AS48185 AS20860	3	<1%	3
12	AS25091 AS20860	3	<1%	3
13	AS48362 AS20860	3	<1%	3
14	AS2914 AS6461 AS20860	3	<1%	3
15	AS62167 AS20860	2	<1%	2
16	AS25160 AS20860	2	<1%	2
17	AS51185 AS20860	2	<1%	2
18	AS34927 AS20860	2	<1%	2
19	AS3214 AS20860	2	<1%	2
20	AS8529 AS20860	2	<1%	2
21	AS212483 AS20860	2	<1%	1
22	AS49544 AS20860	2	<1%	2
23	AS3257 AS174 AS20860	2	<1%	2
24	AS6830 AS6461 AS20860	2	<1%	2
25	AS3320 AS6461 AS20860	2	<1%	2
26	AS1299 AS174 AS20860	2	<1%	2
27	AS58057 AS34549 AS20860	2	<1%	2
28	AS31027 AS12552 AS20860	2	<1%	1
29	AS3491 AS174 AS20860	2	<1%	2
30	AS14907 AS5405 AS20860	2	<1%	2
31	AS34019 AS25091 AS20860	2	<1%	2
32	AS15547 AS6461 AS20860	2	<1%	2
33	AS6762 AS174 AS20860	2	<1%	2
34	AS51184 AS6461 AS20860	2	<1%	2
35	AS47692 AS33891 AS20860	2	<1%	2
36	AS59890 AS6939 AS20860	2	<1%	2
37	AS20612 AS9044 AS20860	2	<1%	1
38	AS271253 AS174 AS20860	2	<1%	1
39	AS2497 AS174 AS20860	2	<1%	2
40	AS19151 AS174 AS20860	2	<1%	2
41	AS49544 AS3356 AS6461 AS20860	2	<1%	1
42	AS35710 AS3320 AS6461 AS20860	2	<1%	2
43	AS49544 AS2914 AS6461 AS20860	2	<1%	2
44	AS51185 AS6762 AS174 AS20860	2	<1%	2
45	AS142289 AS9583 AS4755 AS6453 AS174 AS20860	2	<1%	1
46	AS48070 AS20860	1	<1%	1
47	AS31742 AS20860	1	<1%	1
48	AS35266 AS20860	1	<1%	1
49	AS1828 AS20860	1	<1%	1
50	AS28792 AS20860	1	<1%	1

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

More prefixes from AS20860

Routes seen by RIPE RIS in the 24 hours up to 16 Sep 2026, 09:07 UTC, fetched just now.