This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402603
IANA has recorded AS4259 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS4259\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: 4259
ASName: IOCOM
ASHandle: AS4259
RegDate: 1996-11-19
Updated: 1999-05-17
Ref: https://rdap.arin.net/registry/autnum/4259
OrgName: IOCOM, LTD
OrgId: IOCOML
Address: 2800 South I H 35, Suite 220
City: Austin
StateProv: TX
PostalCode: 78704
Country: US
RegDate: 1996-11-19
Updated: 2012-10-10
Ref: https://rdap.arin.net/registry/entity/IOCOML
OrgAbuseHandle: IDK5-ARIN
OrgAbuseName: Kishk, Isaac D.
OrgAbusePhone: +1-512-462-0356
OrgAbuseEmail: zippo@io.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/IDK5-ARIN
OrgTechHandle: IDK5-ARIN
OrgTechName: Kishk, Isaac D.
OrgTechPhone: +1-512-462-0356
OrgTechEmail: zippo@io.com
OrgTechRef: https://rdap.arin.net/registry/entity/IDK5-ARIN
RTechHandle: IDK5-ARIN
RTechName: Kishk, Isaac D.
RTechPhone: +1-512-462-0356
RTechEmail: zippo@io.com
RTechRef: https://rdap.arin.net/registry/entity/IDK5-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.
#