// University of Southern California - AS4 //

AS Name: ISI

Description: USC/Information Sciences Institute

Registry: NTTCOM

Imports from (1)

AS226

Exports to (2)

AS-LOSNETTOS AS4

⚠️ CIRCL BGP Security Rank: 0.0004% (position 11810)

aut-num: AS4
as-name: ISI
descr: USC/Information Sciences Institute
admin-c: wp8-arin
tech-c: wp8-arin
import: from AS226 accept any
export: to AS-LOSNETTOS announce AS4
notify: prue@usc.edu
notify: SandyG@usc.edu
mnt-by: MAINT-AS226
changed: Prue@usc.edu 20040203
source: NTTCOM

Direct Membership

Macros that directly list AS4 as a member:

AS10886:AS-4-ALL(2 members)
AS-LOSNETTOS-IPV6(16 members)
AS-EUNIC-IX(31 members)
AS-LOSNETTOS(36 members)
AS174:AS-COGC-030(48 members)
AS-CTBC-CUSTOMERS66(50 members)
AS-CTBC-CUSTOMERS181(50 members)
AS-CALREN2(174 members)
AS-PNAPACS(277 members)
AS-HURRICANEV6(20402 members)
AS-HURRICANE(23268 members)

Expanded Membership

All macros containing AS4 (directly or via nested macros): 396

Show 100 macros

AS10886:AS-4-ALL(2 ASNs)
AS-LOSNETTOS-IPV6(16 ASNs)
AS-LOSNETTOS(36 ASNs)
AS10886:AS-ISP-PART(43 ASNs)
AS174:AS-COGC-030(48 ASNs)
AS-CTBC-CUSTOMERS181(50 ASNs)
AS-CTBC-CUSTOMERS66(50 ASNs)
AS10886:AS-RE-PART(52 ASNs)
AS-EUNIC-IX(70 ASNs)
AS-PNAPACS(276 ASNs)
AS-CALREN2(289 ASNs)
AS-CALRENDC(319 ASNs)
AS-CALRENHPR(322 ASNs)
AS174:AS-COGENT(1,618 ASNs)
AS11164:AS-PARTICIPANTS(1,830 ASNs)
AS11164:AS-ALL(1,835 ASNs)
AS11537:AS-PARTICIPANTS-BETA(1,841 ASNs)
AS11537:AS-CONE-BETA(1,847 ASNs)
AS20965:AS-FROM-INTERNET2-TO-GEANT(2,433 ASNs)
AS293:AS-FROM-I2-TO-ESNET(2,941 ASNs)
AS-GEANTNRENPEERS(3,149 ASNs)
AS-INTERNAP(4,181 ASNs)
AS-UNITAS(4,908 ASNs)
AS-UNITAS-CUSTOMERS(4,908 ASNs)
AS-LIMELIGHT-CUST(4,913 ASNs)
AS-LIMELIGHT(4,922 ASNs)
AS-LLNW(4,943 ASNs)
AS-RCN-CE-PEERS(5,340 ASNs)
AS-AS209(10,244 ASNs)
AS-QWEST(10,244 ASNs)
AS-EDGEUNO-TR(10,995 ASNs)
AS-CTBC(11,413 ASNs)
AS-SEABONECUSTLA(11,515 ASNs)
AS-KDDTRANSIT(11,930 ASNs)
AS-EUNET(13,944 ASNs)
AS-SAIX(15,195 ASNs)
AS-1031-PEER1(18,971 ASNs)
AS-LINKBRASIL-271253(19,032 ASNs)
AS271253:AS-CUSTOMERS(19,032 ASNs)
AS-ST1-PEERINGS(19,133 ASNs)
AS-OCCAID6(19,611 ASNs)
AS-OCCAID6-CUSTOMERS(19,611 ASNs)
AS-EDGEUNO(19,687 ASNs)
AS-MZIMA-CUSTOMERS(19,702 ASNs)
AS-MZIMA(19,703 ASNs)
AS-PXGLOBAL(19,703 ASNs)
AS-ARBINET-LAX-BUYERS(19,875 ASNs)
AS-AS53013(20,143 ASNs)
AS-HURRICANEV6(20,402 ASNs)
AS-SEECIX-V6(20,691 ASNs)
AS56858:AS-SEECIX-V6(20,691 ASNs)
AS-DECIX-RIC-V6(20,721 ASNs)
AS393752:AS-DECIX-RIC-V6(20,721 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-TIX(21,568 ASNs)
AS-LITIX-V6(22,027 ASNs)
AS-T-CIX-V6(22,807 ASNs)
AS-HURRICANE(23,268 ASNs)
AS-NFON-LINX-PEERS-V4(23,268 ASNs)
AS-NFON-LINX-PEERS-V6(23,268 ASNs)
AS-XO(23,361 ASNs)
AS56507:AS-IXPMK(23,393 ASNs)
AS-DECIX-RIC(23,570 ASNs)
AS393752:AS-DECIX-RIC(23,570 ASNs)
AS-VSNL-IN(23,661 ASNs)
AS31561:AS-MEMBERS-PAR(23,675 ASNs)
AS-SEECIX(23,696 ASNs)
AS56858:AS-SEECIX(23,696 ASNs)
AS-BALT-IX-V6(23,949 ASNs)
AS-LAMBDA(24,056 ASNs)
AS30781:AS-JAGUAR-PEERING-TIX(24,490 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-CIXP(24,509 ASNs)
AS215405:AS-CONNECTED(24,530 ASNs)
AS-OHIOIX-CMH(24,548 ASNs)
AS-OHIOIX(24,587 ASNs)
AS57369:AS-ONIX(24,726 ASNs)
AS-LTTUKPEERS(24,991 ASNs)
AS-LTT(24,993 ASNs)
AS-LIXP(25,221 ASNs)
AS-FIXO-V6(25,776 ASNs)
AS-SMILE(26,794 ASNs)
AS-BALT-IX(27,227 ASNs)
AS30781:AS-JAGUAR-PEERING-CIXP(27,405 ASNs)
AS4470:AS-TORIX-PEERS(27,996 ASNs)
AS4470:AS-PEERS(28,002 ASNs)
AS-LITIX(28,046 ASNs)
AS-SET-STHIX-RS(28,136 ASNs)
AS-DECIX-BCN-V6(28,476 ASNs)
AS57802:AS-DECIX-BCN-V6(28,476 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-SWISS-IX(28,564 ASNs)
AS7606:AS-VIC-IX(29,635 ASNs)
AS-FIXO(29,811 ASNs)
AS209861:AS-PEERS(29,811 ASNs)
AS55176:AS-MEMBERS(29,827 ASNs)
AS-IXPLAY(30,348 ASNs)
AS-STARTNIX-EU(30,348 ASNs)
AS30781:AS-JAGUAR-PEERING-SWISS-IX(31,389 ASNs)
AS-DECIX-ORD-V6(31,479 ASNs)
AS62760:AS-DECIX-ORD-V6(31,479 ASNs)
AS-DECIX-LIS-V6(32,541 ASNs)
AS43729:AS-DECIX-LIS-V6(32,541 ASNs)
... and 296 more

Upstream AS Paths

82 unique paths, avg length 3.2

AS Looking Glass

Upstream paths (matching graph above)

AS2518 → AS2516 → AS2152 → AS567 → AS4
AS136557 → AS4637 → AS6461 → AS2152 → AS567 → AS4
AS6057 → AS6461 → AS2152 → AS567 → AS4
AS142271 → AS9304 → AS7473 → AS6461 → AS2152 → AS567 → AS4
AS37721 → AS6461 → AS2152 → AS567 → AS4
AS52320 → AS6461 → AS2152 → AS567 → AS4
AS63927 → AS137409 → AS6461 → AS2152 → AS567 → AS4
AS199524 → AS137409 → AS6461 → AS2152 → AS567 → AS4
AS200242 → AS52025 → AS400587 → AS6461 → AS2152 → AS567 → AS4
AS14537 → AS6939 → AS2152 → AS567 → AS4
AS52320 → AS6939 → AS2152 → AS567 → AS4
AS150000 → AS6939 → AS2152 → AS567 → AS4
AS20130 → AS23352 → AS7922 → AS2152 → AS567 → AS4
AS2497 → AS11164 → AS2152 → AS567 → AS4
AS150000 → AS18187 → AS3491 → AS11164 → AS2152 → AS567 → AS4
AS208753 → AS29632 → AS3491 → AS11164 → AS2152 → AS567 → AS4
AS38001 → AS3491 → AS11164 → AS2152 → AS567 → AS4
AS136557 → AS4637 → AS11164 → AS2152 → AS567 → AS4
AS19151 → AS2152 → AS567 → AS4
AS49544 → AS2152 → AS567 → AS4

All 82 Upstream Paths

Complete list of all observed paths

AS852 → AS174 → AS4
AS1299 → AS174 → AS4
AS35008 → AS1299 → AS174 → AS4
AS49544 → AS1299 → AS174 → AS4
AS2497 → AS174 → AS4
AS2914 → AS174 → AS4
AS3491 → AS174 → AS4
AS6057 → AS174 → AS4
AS6453 → AS174 → AS4
AS25091 → AS6453 → AS174 → AS4
AS7594 → AS174 → AS4
AS32590 → AS12956 → AS174 → AS4
AS150000 → AS18187 → AS174 → AS4
AS19151 → AS174 → AS4
AS45352 → AS174 → AS4
AS61573 → AS174 → AS4
AS136557 → AS174 → AS4
AS137409 → AS174 → AS4
AS293 → AS226 → AS4
AS7500 → AS2516 → AS226 → AS4
AS2914 → AS226 → AS4
AS61573 → AS1299 → AS2914 → AS226 → AS4
AS2497 → AS2914 → AS226 → AS4
AS2734 → AS2914 → AS226 → AS4
AS199524 → AS6762 → AS2914 → AS226 → AS4
AS9002 → AS2914 → AS226 → AS4
AS142271 → AS9304 → AS2914 → AS226 → AS4
AS14537 → AS13786 → AS2914 → AS226 → AS4
AS16552 → AS2914 → AS226 → AS4
AS32590 → AS2914 → AS226 → AS4
AS37721 → AS2914 → AS226 → AS4
AS38001 → AS2914 → AS226 → AS4
AS49544 → AS2914 → AS226 → AS4
AS137409 → AS2914 → AS226 → AS4
AS209823 → AS2914 → AS226 → AS4
AS267613 → AS2914 → AS226 → AS4
AS4181 → AS226 → AS4
AS19151 → AS226 → AS4
AS6360 → AS38022 → AS226 → AS4
AS38880 → AS226 → AS4
AS11537 → AS2153 → AS2152 → AS567 → AS4
AS2516 → AS2152 → AS567 → AS4
AS2518 → AS2516 → AS2152 → AS567 → AS4
AS132337 → AS4766 → AS2152 → AS567 → AS4
AS136557 → AS4637 → AS6461 → AS2152 → AS567 → AS4
AS6057 → AS6461 → AS2152 → AS567 → AS4
AS142271 → AS9304 → AS7473 → AS6461 → AS2152 → AS567 → AS4
AS37721 → AS6461 → AS2152 → AS567 → AS4
AS52320 → AS6461 → AS2152 → AS567 → AS4
AS63927 → AS137409 → AS6461 → AS2152 → AS567 → AS4
AS199524 → AS137409 → AS6461 → AS2152 → AS567 → AS4
AS200242 → AS52025 → AS400587 → AS6461 → AS2152 → AS567 → AS4
AS6939 → AS2152 → AS567 → AS4
AS14537 → AS6939 → AS2152 → AS567 → AS4
AS52320 → AS6939 → AS2152 → AS567 → AS4
AS150000 → AS6939 → AS2152 → AS567 → AS4
AS20130 → AS23352 → AS7922 → AS2152 → AS567 → AS4
AS2497 → AS11164 → AS2152 → AS567 → AS4
AS3491 → AS11164 → AS2152 → AS567 → AS4
AS150000 → AS18187 → AS3491 → AS11164 → AS2152 → AS567 → AS4
AS208753 → AS29632 → AS3491 → AS11164 → AS2152 → AS567 → AS4
AS38001 → AS3491 → AS11164 → AS2152 → AS567 → AS4
AS136557 → AS4637 → AS11164 → AS2152 → AS567 → AS4
AS19151 → AS2152 → AS567 → AS4
AS49544 → AS2152 → AS567 → AS4
AS293 → AS10886 → AS4
AS1299 → AS10886 → AS4
AS2497 → AS1299 → AS10886 → AS4
AS8888 → AS1299 → AS10886 → AS4
AS150000 → AS18187 → AS1299 → AS10886 → AS4
AS33185 → AS1299 → AS10886 → AS4
AS35008 → AS1299 → AS10886 → AS4
AS49544 → AS1299 → AS10886 → AS4
AS52320 → AS1299 → AS10886 → AS4
AS140627 → AS1299 → AS10886 → AS4
AS3257 → AS10886 → AS4
AS9002 → AS3257 → AS10886 → AS4
AS6939 → AS3356 → AS10886 → AS4
AS7594 → AS3356 → AS10886 → AS4
AS32590 → AS3356 → AS10886 → AS4
AS199524 → AS3356 → AS10886 → AS4
AS52075 → AS6461 → AS10886 → AS4

AS4 IPv4 Address Subnets (40)

128.9.192.0/18	🇺🇸 US		ISI
128.9.0.0/20	🇺🇸 US	ISI	ISI
128.9.112.0/20	🇺🇸 US	ISI	ISI
128.9.128.0/20	🇺🇸 US	ISI	ISI
128.9.144.0/20	🇺🇸 US	ISI	ISI
128.9.160.0/20	🇺🇸 US	ISI	ISI
128.9.176.0/20	🇺🇸 US	ISI	ISI
128.9.32.0/20	🇺🇸 US	ISI	ISI
128.9.48.0/20	🇺🇸 US	Proxy-registered route object for ISI	ISI
128.9.64.0/20	🇺🇸 US	ISI	ISI

AS4 IPv6 Address Subnets (7)

2001:1878:401::/48	🇺🇸 US		ISI
2001:1878:402::/48	🇺🇸 US		ISI
2001:1878:403::/48	🇺🇸 US		ISI
2001:1878:404::/48	🇺🇸 US		ISI
2001:500:202::/48	🇺🇸 US	4676 Admiralty Way Marina del Rey CA 90292 United …	ISI
2606:d5c0::/32	🇺🇸 US		ISI
2606:d5c0::/48	🇺🇸 US		ISI