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.
AS1789 14 More Specifics 14 Total Advertisements SPRINTLINK1, US
199.0.67.0/24 199.0.0.0/14
199.0.145.0/24 199.0.0.0/14
199.0.158.0/24 199.0.0.0/14
199.0.159.0/24 199.0.0.0/14
199.0.232.0/24 199.0.0.0/14
199.0.234.0/24 199.0.0.0/14
199.0.236.0/24 199.0.0.0/14
199.0.237.0/24 199.0.0.0/14
199.0.238.0/24 199.0.0.0/14
199.3.226.0/23 199.0.0.0/14
199.3.226.0/24 199.0.0.0/14
199.3.245.0/24 199.0.0.0/14
208.0.4.0/24 208.0.0.0/11
208.11.152.0/24 208.0.0.0/11
whois: 402603
IANA has recorded AS1789 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS1789\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: 1789
ASName: COGENT-1789
ASHandle: AS1789
RegDate: 1992-07-07
Updated: 2025-12-23
Ref: https://rdap.arin.net/registry/autnum/1789
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