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#
# 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 1997-2025, American Registry for Internet Numbers, Ltd.
#

ASNumber:
46286
ASName: COOK-COUNTY
ASHandle: AS46286
RegDate: 2008-08-01
Updated: 2008-08-01
Ref: https://rdap.arin.net/registry/autnum/46286

OrgName:
Cook County
OrgId: COOKC-2
Address: 118 N Clark Street
City: Chicago
StateProv: IL
PostalCode: 60602
Country: US
RegDate: 2008-05-23
Updated: 2016-04-21
Ref: https://rdap.arin.net/registry/entity/COOKC-2

OrgTechHandle:
NCCAD1-ARIN
OrgTechName: NCC Admin
OrgTechPhone: +1-312-603-9002
OrgTechEmail: NCC@cookcountyil.gov
OrgTechRef: https://rdap.arin.net/registry/entity/NCCAD1-ARIN

OrgNOCHandle:
NCCAD1-ARIN
OrgNOCName: NCC Admin
OrgNOCPhone: +1-312-603-9002
OrgNOCEmail: NCC@cookcountyil.gov
OrgNOCRef: https://rdap.arin.net/registry/entity/NCCAD1-ARIN

OrgAbuseHandle:
NCCAD1-ARIN
OrgAbuseName: NCC Admin
OrgAbusePhone: +1-312-603-9002
OrgAbuseEmail: NCC@cookcountyil.gov
OrgAbuseRef: https://rdap.arin.net/registry/entity/NCCAD1-ARIN

RTechHandle:
NCC29-ARIN
RTechName: Network Control Center
RTechPhone: +1-312-603-0087
RTechEmail: ddonelson@cookcountygov.com
RTechRef: https://rdap.arin.net/registry/entity/NCC29-ARIN

RNOCHandle:
NCC29-ARIN
RNOCName: Network Control Center
RNOCPhone: +1-312-603-0087
RNOCEmail: ddonelson@cookcountygov.com
RNOCRef: https://rdap.arin.net/registry/entity/NCC29-ARIN

RAbuseHandle:
NCC29-ARIN
RAbuseName: Network Control Center
RAbusePhone: +1-312-603-0087
RAbuseEmail: ddonelson@cookcountygov.com
RAbuseRef: https://rdap.arin.net/registry/entity/NCC29-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 1997-2025, American Registry for Internet Numbers, Ltd.
#

IPv4 Results:


AS46286 Cook County
12.218.238.0 - 12.218.239.255
66.99.240.0 - 66.99.241.255
68.250.73.0 - 68.250.73.255
127.255.255.255 - 127.255.255.255
IPv6 not found

WHOIS Lookup

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  • Domain name
  • Autonomous system number (ASN)
  • Company name
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