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 AS4503 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS4503\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: 4503
ASName: EGINTERLINK
ASHandle: AS4503
RegDate: 1995-04-04
Updated: 2019-01-30
Ref: https://rdap.arin.net/registry/autnum/4503
OrgName: Grady Memorial Hospital
OrgId: GMH
Address: 80 Jesse Hill Jr.
City: Atlanta
StateProv: GA
PostalCode: 30303
Country: US
RegDate: 1988-02-23
Updated: 2026-05-01
Ref: https://rdap.arin.net/registry/entity/GMH
OrgTechHandle: NOC33166-ARIN
OrgTechName: noc
OrgTechPhone: +1-404-433-1881
OrgTechEmail: admin@metricnetservices.com
OrgTechRef: https://rdap.arin.net/registry/entity/NOC33166-ARIN
OrgAbuseHandle: KKM7-ARIN
OrgAbuseName: mccalmon, kalan Kai
OrgAbusePhone: +1-470-232-7270
OrgAbuseEmail: kkmccalmon@GMH.EDU
OrgAbuseRef: https://rdap.arin.net/registry/entity/KKM7-ARIN
OrgAbuseHandle: NOC33166-ARIN
OrgAbuseName: noc
OrgAbusePhone: +1-404-433-1881
OrgAbuseEmail: admin@metricnetservices.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/NOC33166-ARIN
OrgTechHandle: KKM7-ARIN
OrgTechName: mccalmon, kalan Kai
OrgTechPhone: +1-470-232-7270
OrgTechEmail: kkmccalmon@GMH.EDU
OrgTechRef: https://rdap.arin.net/registry/entity/KKM7-ARIN
RTechHandle: STEEL174-ARIN
RTechName: Steele, Larry
RTechPhone: +1-404-616-9570
RTechEmail: lsteele@gmh.edu
RTechRef: https://rdap.arin.net/registry/entity/STEEL174-ARIN
RAbuseHandle: STEEL174-ARIN
RAbuseName: Steele, Larry
RAbusePhone: +1-404-616-9570
RAbuseEmail: lsteele@gmh.edu
RAbuseRef: https://rdap.arin.net/registry/entity/STEEL174-ARIN
RNOCHandle: STEEL174-ARIN
RNOCName: Steele, Larry
RNOCPhone: +1-404-616-9570
RNOCEmail: lsteele@gmh.edu
RNOCRef: https://rdap.arin.net/registry/entity/STEEL174-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.
#