BGP map for 1.21.144.0/20

1.21.144.0/20 is announced by AS2519 ARTERIA Networks Corporation and seen by 331 peers of 23 RIPE RIS collectors, over 257 different AS paths. Its busiest upstreams are AS3356 Level 3 Parent, LLC (31%), AS174 Cogent Communications, LLC (26%) and AS4637 Telstra Global (19%). The most common path, used by 11 peers, is AS24482 AS2519.

Routes checked 05:22:13 UTC

No change in the origin, the upstreams or the number of peers since 05:22 UTC, when this site first looked at 1.21.144.0/20.

AS-path graph toward 1.21.144.0/20

origin Tier 1Tier 2edge network prefix best path: chosen by 11 of 331 peers (3%) number on a line = peers using that link RIS data up to 05:21 UTC what the colours mean 12 of 257 paths drawn 5 quieter networks left out

Download PNG View JSON Raw upstream

331collector peers

23RIS collectors

257distinct AS paths

3.4average AS hops, 2 to 5

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS3356 Level 3 Parent, LLC	103	31%
AS174 Cogent Communications, LLC	87	26%
AS4637 Telstra Global	62	19%
AS6939 Hurricane Electric LLC	14	4%
AS24482 SG.GS	11	3%
AS2497 Internet Initiative Japan Inc.	11	3%
AS1299 TWELVE99 Arelion Sweden AB	11	3%
AS33891 CORE-BACKBONE Core-Backbone GmbH	7	2%
AS8220 COLT COLT Technology Services Group Limited	4	1%
AS49544 i3Dnet i3D.net B.V	3	<1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS3356 Level 3 Parent, LLC	103	31%
AS174 Cogent Communications, LLC	87	26%
AS4637 Telstra Global	62	19%
AS6939 Hurricane Electric LLC	14	4%
AS2497 Internet Initiative Japan Inc.	9	3%
AS1299 TWELVE99 Arelion Sweden AB	9	3%
AS6461 Zayo Bandwidth	8	2%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	8	2%
AS33891 CORE-BACKBONE Core-Backbone GmbH	7	2%
AS9002 RETN-AS RETN Limited	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 AS2519	11	3%	11
2	AS8218 AS6461 AS4637 AS2519	7	2%	6
3	AS199524 AS174 AS2519	6	2%	6
4	AS6461 AS4637 AS2519	5	2%	5
5	AS13030 AS4637 AS2519	4	1%	4
6	AS12779 AS174 AS2519	4	1%	4
7	AS14840 AS3356 AS2519	4	1%	2
8	AS47147 AS4637 AS2519	4	1%	4
9	AS49544 AS2519	3	<1%	3
10	AS2914 AS2497 AS2519	3	<1%	3
11	AS9002 AS4637 AS2519	3	<1%	3
12	AS48185 AS3356 AS2519	3	<1%	3
13	AS49544 AS3356 AS2519	3	<1%	2
14	AS25091 AS3356 AS2519	3	<1%	3
15	AS48362 AS1764 AS3356 AS2519	3	<1%	3
16	AS1299 AS2519	2	<1%	2
17	AS199524 AS2519	2	<1%	2
18	AS2497 AS2519	2	<1%	2
19	AS3257 AS3356 AS2519	2	<1%	2
20	AS6830 AS174 AS2519	2	<1%	2
21	AS25160 AS174 AS2519	2	<1%	2
22	AS50628 AS3356 AS2519	2	<1%	2
23	AS142289 AS9583 AS2519	2	<1%	1
24	AS31027 AS4637 AS2519	2	<1%	1
25	AS3491 AS174 AS2519	2	<1%	2
26	AS15547 AS174 AS2519	2	<1%	2
27	AS6762 AS3356 AS2519	2	<1%	2
28	AS47692 AS33891 AS2519	2	<1%	2
29	AS59890 AS3356 AS2519	2	<1%	2
30	AS271253 AS3356 AS2519	2	<1%	1
31	AS19151 AS4637 AS2519	2	<1%	2
32	AS42473 AS9002 AS4637 AS2519	2	<1%	2
33	AS58057 AS34549 AS174 AS2519	2	<1%	2
34	AS35710 AS3320 AS3356 AS2519	2	<1%	2
35	AS34019 AS35625 AS3356 AS2519	2	<1%	2
36	AS51184 AS47692 AS33891 AS2519	2	<1%	2
37	AS51185 AS6762 AS3356 AS2519	2	<1%	2
38	AS20612 AS8758 AS8220 AS2519	2	<1%	1
39	AS1828 AS2519	1	<1%	1
40	AS36236 AS2519	1	<1%	1
41	AS18106 AS2519	1	<1%	1
42	AS14907 AS2519	1	<1%	1
43	AS9002 AS2519	1	<1%	1
44	AS35280 AS2519	1	<1%	1
45	AS31742 AS174 AS2519	1	<1%	1
46	AS5511 AS2497 AS2519	1	<1%	1
47	AS3320 AS4637 AS2519	1	<1%	1
48	AS3491 AS3356 AS2519	1	<1%	1
49	AS62167 AS3356 AS2519	1	<1%	1
50	AS6424 AS174 AS2519	1	<1%	1

50 of 257 paths shown. All of them are in the JSON.

More prefixes from AS2519

Routes seen by RIPE RIS in the 24 hours up to 16 Sep 2026, 05:21 UTC, fetched just now.