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.
AS17224 86 More Specifics 86 Total Advertisements ATT-CERFNET-BLOCK, US
12.102.193.0/24 12.0.0.0/8
12.102.194.0/24 12.0.0.0/8
12.102.196.0/24 12.0.0.0/8
12.102.197.0/24 12.0.0.0/8
12.102.198.0/24 12.0.0.0/8
12.102.199.0/24 12.0.0.0/8
12.102.201.0/24 12.0.0.0/8
12.102.202.0/24 12.0.0.0/8
12.102.203.0/24 12.0.0.0/8
12.102.207.0/24 12.0.0.0/8
12.102.208.0/24 12.0.0.0/8
12.102.209.0/24 12.0.0.0/8
12.102.210.0/24 12.0.0.0/8
12.102.211.0/24 12.0.0.0/8
12.120.196.0/24 12.0.0.0/8
12.120.197.0/24 12.0.0.0/8
12.120.198.0/24 12.0.0.0/8
12.120.199.0/24 12.0.0.0/8
12.120.200.0/24 12.0.0.0/8
12.120.201.0/24 12.0.0.0/8
12.120.202.0/24 12.0.0.0/8
12.120.203.0/24 12.0.0.0/8
12.120.204.0/24 12.0.0.0/8
12.120.205.0/24 12.0.0.0/8
12.120.206.0/24 12.0.0.0/8
12.120.207.0/24 12.0.0.0/8
12.120.208.0/24 12.0.0.0/8
12.120.209.0/24 12.0.0.0/8
12.120.210.0/24 12.0.0.0/8
12.120.211.0/24 12.0.0.0/8
12.120.212.0/24 12.0.0.0/8
12.120.213.0/24 12.0.0.0/8
12.120.214.0/24 12.0.0.0/8
12.120.215.0/24 12.0.0.0/8
12.121.96.0/24 12.0.0.0/8
12.121.97.0/24 12.0.0.0/8
12.121.98.0/24 12.0.0.0/8
12.121.99.0/24 12.0.0.0/8
12.121.100.0/24 12.0.0.0/8
12.121.102.0/24 12.0.0.0/8
12.121.104.0/24 12.0.0.0/8
12.121.106.0/24 12.0.0.0/8
12.176.165.0/24 12.0.0.0/8
12.176.181.0/24 12.0.0.0/8
12.193.109.0/24 12.0.0.0/8
12.193.111.0/24 12.0.0.0/8
12.193.113.0/24 12.0.0.0/8
12.255.144.0/24 12.0.0.0/8
12.255.145.0/24 12.0.0.0/8
12.255.146.0/24 12.0.0.0/8
12.255.147.0/24 12.0.0.0/8
12.255.148.0/24 12.0.0.0/8
12.255.149.0/24 12.0.0.0/8
12.255.150.0/24 12.0.0.0/8
12.255.151.0/24 12.0.0.0/8
12.255.152.0/24 12.0.0.0/8
12.255.153.0/24 12.0.0.0/8
12.255.154.0/24 12.0.0.0/8
12.255.156.0/24 12.0.0.0/8
12.255.157.0/24 12.0.0.0/8
12.255.158.0/24 12.0.0.0/8
12.255.159.0/24 12.0.0.0/8
12.255.160.0/24 12.0.0.0/8
12.255.161.0/24 12.0.0.0/8
12.255.162.0/24 12.0.0.0/8
12.255.163.0/24 12.0.0.0/8
12.255.164.0/24 12.0.0.0/8
12.255.165.0/24 12.0.0.0/8
12.255.166.0/24 12.0.0.0/8
12.255.167.0/24 12.0.0.0/8
12.255.168.0/24 12.0.0.0/8
12.255.169.0/24 12.0.0.0/8
12.255.170.0/24 12.0.0.0/8
12.255.172.0/24 12.0.0.0/8
12.255.173.0/24 12.0.0.0/8
12.255.174.0/24 12.0.0.0/8
12.255.175.0/24 12.0.0.0/8
32.40.224.0/20 32.0.0.0/9
32.40.234.0/24 32.0.0.0/9
32.67.0.0/21 32.0.0.0/9
32.67.8.0/23 32.0.0.0/9
32.67.10.0/24 32.0.0.0/9
32.67.15.0/24 32.0.0.0/9
32.67.16.0/20 32.0.0.0/9
32.67.37.0/24 32.0.0.0/9
32.67.39.0/24 32.0.0.0/9
whois: 402551
IANA has recorded AS17224 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS17224\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: 17224 - 17233
ASName: ATT-CERFNET-BLOCK
ASHandle: AS17224
RegDate: 2000-08-09
Updated: 2025-03-19
Ref: https://rdap.arin.net/registry/autnum/17224
OrgName: AT&T Enterprises, LLC
OrgId: AEL-360
Address: 208 S. Akard St.
City: Dallas
StateProv: TX
PostalCode: 75202
Country: US
RegDate: 2024-11-22
Updated: 2025-10-29
Ref: https://rdap.arin.net/registry/entity/AEL-360
OrgAbuseHandle: ABUSE7-ARIN
OrgAbuseName: abuse
OrgAbusePhone: +1-919-319-8167
OrgAbuseEmail: abuse@att.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE7-ARIN
OrgRoutingHandle: ROUTI59-ARIN
OrgRoutingName: Routing POC
OrgRoutingPhone: +1-999-999-9999
OrgRoutingEmail: routing_poc@att.com
OrgRoutingRef: https://rdap.arin.net/registry/entity/ROUTI59-ARIN
OrgTechHandle: ICC-ARIN
OrgTechName: IP Team
OrgTechPhone: +1-888-876-2382
OrgTechEmail: rm-ipspecialist@att.com
OrgTechRef: https://rdap.arin.net/registry/entity/ICC-ARIN
OrgTechHandle: ZS44-ARIN
OrgTechName: IPAdmin-ATT Internet Services
OrgTechPhone: +1-888-510-5545
OrgTechEmail: ipadmin@att.com
OrgTechRef: https://rdap.arin.net/registry/entity/ZS44-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.
#