This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS4266 53 More Specifics 55 Total Advertisements CERNET-ASN-BLOCK, US
12.130.64.0/20 12.0.0.0/8
63.241.0.0/18 63.240.0.0/15
134.24.10.0/24 134.24.0.0/16
134.24.92.0/24 134.24.0.0/16
134.24.160.0/19 134.24.0.0/16
134.24.170.0/24 134.24.0.0/16
134.24.192.0/18 134.24.0.0/16
149.17.160.0/20 149.17.0.0/16
192.215.1.0/24 192.215.0.0/16
192.215.3.0/24 192.215.0.0/16
192.215.4.0/24 192.215.0.0/16
192.215.5.0/24 192.215.0.0/16
192.215.8.0/23 192.215.0.0/16
192.215.10.0/24 192.215.0.0/16
192.215.14.0/24 192.215.0.0/16
192.215.16.0/23 192.215.0.0/16
192.215.21.0/24 192.215.0.0/16
192.215.22.0/23 192.215.0.0/16
192.215.26.0/24 192.215.0.0/16
192.215.32.0/24 192.215.0.0/16
192.215.43.0/24 192.215.0.0/16
192.215.48.0/24 192.215.0.0/16
192.215.50.0/23 192.215.0.0/16
192.215.58.0/24 192.215.0.0/16
192.215.64.0/23 192.215.0.0/16
192.215.70.0/23 192.215.0.0/16
192.215.72.0/22 192.215.0.0/16
192.215.78.0/23 192.215.0.0/16
192.215.81.0/24 192.215.0.0/16
192.215.107.0/24 192.215.0.0/16
192.215.128.0/21 192.215.0.0/16
192.215.140.0/22 192.215.0.0/16
192.215.145.0/24 192.215.0.0/16
192.215.146.0/23 192.215.0.0/16
192.215.160.0/23 192.215.0.0/16
192.215.162.0/24 192.215.0.0/16
192.215.175.0/24 192.215.0.0/16
192.215.176.0/24 192.215.0.0/16
192.215.180.0/23 192.215.0.0/16
192.215.198.0/24 192.215.0.0/16
192.215.200.0/21 192.215.0.0/16
192.215.212.0/24 192.215.0.0/16
192.215.216.0/23 192.215.0.0/16
192.215.220.0/24 192.215.0.0/16
192.215.234.0/23 192.215.0.0/16
192.215.241.0/24 192.215.0.0/16
192.215.248.0/23 192.215.0.0/16
192.215.254.0/24 192.215.0.0/16
199.106.128.0/21 199.106.0.0/15
206.16.84.0/23 206.16.0.0/14
206.19.20.0/22 206.16.0.0/14
206.19.32.0/22 206.16.0.0/14
206.19.69.0/24 206.16.0.0/14
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 12.130.64.0/20 Announced
+ 63.241.0.0/18 Announced
+ 134.24.0.0/16 Announced
+ 134.24.10.0/24 Announced
+ 134.24.92.0/24 Announced
+ 134.24.160.0/19 Announced
+ 134.24.170.0/24 Announced
+ 134.24.192.0/18 Announced
+ 149.17.160.0/20 Announced
+ 192.153.156.0/24 Announced
+ 192.215.1.0/24 Announced
+ 192.215.3.0/24 Announced
+ 192.215.4.0/24 Announced
+ 192.215.5.0/24 Announced
+ 192.215.8.0/23 Announced
+ 192.215.10.0/24 Announced
+ 192.215.14.0/24 Announced
+ 192.215.16.0/23 Announced
+ 192.215.21.0/24 Announced
+ 192.215.22.0/23 Announced
+ 192.215.26.0/24 Announced
+ 192.215.32.0/24 Announced
+ 192.215.43.0/24 Announced
+ 192.215.48.0/24 Announced
+ 192.215.50.0/23 Announced
+ 192.215.58.0/24 Announced
+ 192.215.64.0/23 Announced
+ 192.215.70.0/23 Announced
+ 192.215.72.0/22 Announced
+ 192.215.78.0/23 Announced
+ 192.215.81.0/24 Announced
+ 192.215.107.0/24 Announced
+ 192.215.128.0/21 Announced
+ 192.215.140.0/22 Announced
+ 192.215.145.0/24 Announced
+ 192.215.146.0/23 Announced
+ 192.215.160.0/23 Announced
+ 192.215.162.0/24 Announced
+ 192.215.175.0/24 Announced
+ 192.215.176.0/24 Announced
+ 192.215.180.0/23 Announced
+ 192.215.198.0/24 Announced
+ 192.215.200.0/21 Announced
+ 192.215.212.0/24 Announced
+ 192.215.216.0/23 Announced
+ 192.215.220.0/24 Announced
+ 192.215.234.0/23 Announced
+ 192.215.241.0/24 Announced
+ 192.215.248.0/23 Announced
+ 192.215.254.0/24 Announced
+ 199.106.128.0/21 Announced
+ 206.16.84.0/23 Announced
+ 206.19.20.0/22 Announced
+ 206.19.32.0/22 Announced
+ 206.19.69.0/24 Announced
whois: 402603
IANA has recorded AS4266 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS4266\n
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
ASNumber: 4262 - 4269
ASName: CERNET-ASN-BLOCK
ASHandle: AS4262
RegDate: 1995-01-18
Updated: 1995-01-18
Ref: https://rdap.arin.net/registry/autnum/4262
OrgName: California Education and Research Federation Network
OrgId: CERFN
Address: San Diego SuperComputer Center
Address: P.O.Box 85608
City: La Jolla
StateProv: CA
PostalCode: 92186-9784
Country: US
RegDate: 1995-01-18
Updated: 2012-10-10
Ref: https://rdap.arin.net/registry/entity/CERFN
OrgTechHandle: PM200-ARIN
OrgTechName: Mohta, Pushpendra
OrgTechPhone: +1-619-455-3990
OrgTechEmail: noc@cerf.net
OrgTechRef: https://rdap.arin.net/registry/entity/PM200-ARIN
OrgAbuseHandle: PM200-ARIN
OrgAbuseName: Mohta, Pushpendra
OrgAbusePhone: +1-619-455-3990
OrgAbuseEmail: noc@cerf.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/PM200-ARIN
RTechHandle: PM200-ARIN
RTechName: Mohta, Pushpendra
RTechPhone: +1-619-455-3990
RTechEmail: noc@cerf.net
RTechRef: https://rdap.arin.net/registry/entity/PM200-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#