This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
| Prefix | Origin AS | AS Description | Unallocated block |
|---|---|---|---|
| 23.159.56.0/24 | AS174 | COGENT-174 - Cogent Communications, LLC, US | 23.159.53.0 - 23.159.59.255 |
| Bogus AS | Announcing-AS | ||
|---|---|---|---|
| AS6485 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS13342 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS14350 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS19753 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS22484 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS22830 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS25643 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS25675 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS26483 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS26582 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS27361 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS27593 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS33031 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS36249 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS62820 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS62964 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS394187 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS394634 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS395495 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS397461 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS398169 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS398294 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| AS399112 | Announced by | AS174 | COGENT-174 - Cogent Communications, LLC, US |
whois: 402603
IANA has recorded AS174 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS174\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: 174
ASName: COGENT-174
ASHandle: AS174
RegDate: 1996-05-16
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/174
OrgName: Cogent Communications, LLC
OrgId: COGC
Address: 2450 N Street NW
City: Washington
StateProv: DC
PostalCode: 20037
Country: US
RegDate: 2000-05-30
Updated: 2025-09-23
Comment: Geofeed https://geofeed.cogentco.com/geofeed.csv
Ref: https://rdap.arin.net/registry/entity/COGC
ReferralServer: rwhois://rwhois.cogentco.com:4321
OrgAbuseHandle: COGEN-ARIN
OrgAbuseName: Cogent Abuse
OrgAbusePhone: +1-877-875-4311
OrgAbuseEmail: abuse@cogentco.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/COGEN-ARIN
OrgNOCHandle: ZC108-ARIN
OrgNOCName: Cogent Communications
OrgNOCPhone: +1-877-875-4311
OrgNOCEmail: noc@cogentco.com
OrgNOCRef: https://rdap.arin.net/registry/entity/ZC108-ARIN
OrgTechHandle: IPALL-ARIN
OrgTechName: IP Allocation
OrgTechPhone: +1-877-875-4311
OrgTechEmail: ipalloc@cogentco.com
OrgTechRef: https://rdap.arin.net/registry/entity/IPALL-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.
#
Found a referral to rwhois.cogentco.com:4321.
%rwhois V-1.5:0010b0:00 rwhois.cogentco.com (CGNT rwhoisd 1.2.2)
%error 230 No objects found