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 AS4900 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS4900\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: 4900
ASName: ASN1
ASHandle: AS4900
RegDate: 2009-09-24
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/4900
OrgName: Montgomery County Hospital District
OrgId: MONTG-46
Address: 1400 S Loop 336 W
City: Conroe
StateProv: TX
PostalCode: 77304
Country: US
RegDate: 2009-09-21
Updated: 2025-07-15
Ref: https://rdap.arin.net/registry/entity/MONTG-46
OrgTechHandle: ITDEP76-ARIN
OrgTechName: IT DEPT
OrgTechPhone: +1-936-523-1120
OrgTechEmail: isdept@mchd-tx.org
OrgTechRef: https://rdap.arin.net/registry/entity/ITDEP76-ARIN
OrgAbuseHandle: ITDEP76-ARIN
OrgAbuseName: IT DEPT
OrgAbusePhone: +1-936-523-1120
OrgAbuseEmail: isdept@mchd-tx.org
OrgAbuseRef: https://rdap.arin.net/registry/entity/ITDEP76-ARIN
OrgTechHandle: KRAUS195-ARIN
OrgTechName: Krause, James
OrgTechPhone: +1-281-364-0539
OrgTechEmail: jkrause@ocscorp.com
OrgTechRef: https://rdap.arin.net/registry/entity/KRAUS195-ARIN
OrgTechHandle: SDM31-ARIN
OrgTechName: Montgomery, Seth D
OrgTechPhone: +1-281-364-0539
OrgTechEmail: smontgomery@ocscorp.com
OrgTechRef: https://rdap.arin.net/registry/entity/SDM31-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.
#