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.
AS11604 6 More Specifics 6 Total Advertisements HIS-NOC, US
216.194.192.0/22 216.194.192.0/18
216.194.196.0/22 216.194.192.0/18
216.194.196.0/24 216.194.192.0/18
216.194.197.0/24 216.194.192.0/18
216.194.198.0/24 216.194.192.0/18
216.194.199.0/24 216.194.192.0/18
216.194.252.0/22 216.194.192.0/18
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 216.194.192.0/22 Announced
+ 216.194.196.0/22 Announced
+ 216.194.196.0/24 Announced
+ 216.194.197.0/24 Announced
+ 216.194.198.0/24 Announced
+ 216.194.199.0/24 Announced
- 216.194.252.0/22 Withdrawn
whois: 402590
IANA has recorded AS11604 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS11604\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: 11604
ASName: HIS-NOC
ASHandle: AS11604
RegDate: 1998-10-19
Updated: 2012-02-24
Ref: https://rdap.arin.net/registry/autnum/11604
OrgName: Heller Information Services, Inc.
OrgId: HLLR
Address: 30 West Gude Drive
Address: Suite 220
City: Rockville
StateProv: MD
PostalCode: 20850
Country: US
RegDate: 1998-10-19
Updated: 2014-10-27
Ref: https://rdap.arin.net/registry/entity/HLLR
OrgAbuseHandle: HIS-NOC-ARIN
OrgAbuseName: HIS Network Operations Center
OrgAbusePhone: +1-301-255-0500
OrgAbuseEmail: noc@his.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/HIS-NOC-ARIN
OrgTechHandle: HIS-NOC-ARIN
OrgTechName: HIS Network Operations Center
OrgTechPhone: +1-301-255-0500
OrgTechEmail: noc@his.com
OrgTechRef: https://rdap.arin.net/registry/entity/HIS-NOC-ARIN
RTechHandle: HIS-NOC-ARIN
RTechName: HIS Network Operations Center
RTechPhone: +1-301-255-0500
RTechEmail: noc@his.com
RTechRef: https://rdap.arin.net/registry/entity/HIS-NOC-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.
#