BGP map for 128.9.37.0/24

128.9.37.0/24 is announced by AS4 University of Southern California and seen by 327 peers of 23 RIPE RIS collectors, over 251 different AS paths. Its busiest upstreams are AS226 Los Nettos (77%) and AS567 Los Nettos (23%). The most common path, used by 11 peers, is AS24482 AS2914 AS226 AS4.

Routes checked 06:33:14 UTC

No change in the origin, the upstreams or the number of peers since 06:33 UTC, when this site first looked at 128.9.37.0/24.

AS-path graph toward 128.9.37.0/24

origin Tier 1Tier 2transitedge network prefix best path: chosen by 11 of 327 peers (3%) number on a line = peers using that link RIS data up to 06:33 UTC what the colours mean 12 of 251 paths drawn 4 quieter networks left out

Download PNG View JSON Raw upstream

327collector peers

23RIS collectors

251distinct AS paths

5.0average AS hops, 3 to 7

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS226 Los Nettos	251	77%
AS567 Los Nettos	76	23%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS226 Los Nettos	251	77%
AS2914 NTT America, Inc.	242	74%
AS2152 CENIC	76	23%
AS567 Los Nettos	76	23%
AS3356 Level 3 Parent, LLC	63	19%
AS1299 TWELVE99 Arelion Sweden AB	20	6%
AS9002 RETN-AS RETN Limited	18	6%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	17	5%
AS3320 DTAG Deutsche Telekom AG	13	4%
AS6453 TATA COMMUNICATIONS (AMERICA) INC	12	4%

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 AS226 AS4	11	3%	11
2	AS8218 AS6461 AS2914 AS226 AS4	7	2%	6
3	AS6461 AS2914 AS226 AS4	5	2%	5
4	AS9002 AS2914 AS226 AS4	4	1%	4
5	AS12779 AS2914 AS226 AS4	4	1%	4
6	AS14840 AS3356 AS2152 AS567 AS4	4	1%	2
7	AS13030 AS1299 AS3356 AS2152 AS567 AS4	4	1%	4
8	AS2914 AS226 AS4	3	<1%	3
9	AS3491 AS2914 AS226 AS4	3	<1%	3
10	AS48185 AS2914 AS226 AS4	3	<1%	3
11	AS199524 AS2914 AS226 AS4	3	<1%	3
12	AS35280 AS2914 AS226 AS4	3	<1%	3
13	AS25091 AS2914 AS226 AS4	3	<1%	3
14	AS51185 AS6762 AS2914 AS226 AS4	3	<1%	3
15	AS48362 AS1764 AS2914 AS226 AS4	3	<1%	3
16	AS47147 AS3320 AS2914 AS226 AS4	3	<1%	3
17	AS19151 AS226 AS4	2	<1%	2
18	AS6830 AS2914 AS226 AS4	2	<1%	2
19	AS3320 AS2914 AS226 AS4	2	<1%	2
20	AS25160 AS2914 AS226 AS4	2	<1%	2
21	AS55720 AS2914 AS226 AS4	2	<1%	1
22	AS49544 AS2914 AS226 AS4	2	<1%	2
23	AS6762 AS2914 AS226 AS4	2	<1%	2
24	AS47692 AS2914 AS226 AS4	2	<1%	2
25	AS49544 AS2152 AS567 AS4	2	<1%	2
26	AS2497 AS2914 AS226 AS4	2	<1%	2
27	AS11164 AS2152 AS567 AS4	2	<1%	2
28	AS3257 AS3356 AS2152 AS567 AS4	2	<1%	2
29	AS42473 AS9002 AS2914 AS226 AS4	2	<1%	2
30	AS1299 AS3356 AS2152 AS567 AS4	2	<1%	2
31	AS58057 AS34549 AS2914 AS226 AS4	2	<1%	2
32	AS49544 AS3356 AS2152 AS567 AS4	2	<1%	1
33	AS31027 AS3356 AS2152 AS567 AS4	2	<1%	1
34	AS35710 AS3320 AS2914 AS226 AS4	2	<1%	2
35	AS15547 AS3303 AS2914 AS226 AS4	2	<1%	2
36	AS51184 AS47692 AS2914 AS226 AS4	2	<1%	2
37	AS34019 AS25091 AS2914 AS226 AS4	2	<1%	2
38	AS59890 AS60068 AS2914 AS226 AS4	2	<1%	2
39	AS20612 AS9044 AS2914 AS226 AS4	2	<1%	1
40	AS62167 AS24785 AS6830 AS2914 AS226 AS4	2	<1%	2
41	AS58057 AS1836 AS5511 AS2914 AS226 AS4	2	<1%	2
42	AS142289 AS9583 AS6453 AS2914 AS226 AS4	2	<1%	1
43	AS31742 AS2914 AS226 AS4	1	<1%	1
44	AS35266 AS2914 AS226 AS4	1	<1%	1
45	AS1828 AS2152 AS567 AS4	1	<1%	1
46	AS14630 AS2914 AS226 AS4	1	<1%	1
47	AS3170 AS2914 AS226 AS4	1	<1%	1
48	AS7018 AS2914 AS226 AS4	1	<1%	1
49	AS34549 AS2914 AS226 AS4	1	<1%	1
50	AS37721 AS2914 AS226 AS4	1	<1%	1

50 of 251 paths shown. All of them are in the JSON.

More prefixes from AS4

Routes seen by RIPE RIS in the 24 hours up to 16 Sep 2026, 06:33 UTC, fetched just now.