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.
AS12263 1 More Specifics 1 Total Advertisements STBH, US
216.172.26.0/24 216.172.16.0/20
whois: 402590
IANA has recorded AS12263 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS12263\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/
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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ASNumber: 12263
ASName: STBH
ASHandle: AS12263
RegDate: 2012-06-05
Updated: 2012-06-05
Ref: https://rdap.arin.net/registry/autnum/12263
OrgName: Saint Bernard Hospital
OrgId: SBH-11
Address: 326 W. 64th Street
City: Chicago
StateProv: IL
PostalCode: 60621
Country: US
RegDate: 2011-10-12
Updated: 2011-10-12
Ref: https://rdap.arin.net/registry/entity/SBH-11
OrgTechHandle: NETWO4614-ARIN
OrgTechName: Network Analyst
OrgTechPhone: +1-773-962-4446
OrgTechEmail: gbuchanan@stbh.org
OrgTechRef: https://rdap.arin.net/registry/entity/NETWO4614-ARIN
OrgAbuseHandle: NETWO4614-ARIN
OrgAbuseName: Network Analyst
OrgAbusePhone: +1-773-962-4446
OrgAbuseEmail: gbuchanan@stbh.org
OrgAbuseRef: https://rdap.arin.net/registry/entity/NETWO4614-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.
#