This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402628
IANA has recorded AS27537 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS27537\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: 27537
ASName: ACCAAS
ASHandle: AS27537
RegDate: 2003-03-26
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/27537
OrgName: Callcentric Wholesale, Inc.
OrgId: ACCAT
Address: 11 Broadway
Address: Suite 1015
City: New York
StateProv: NY
PostalCode: 10004
Country: US
RegDate: 2003-03-24
Updated: 2017-01-28
Comment: Wholesale division: http://www.callcentric.biz
Comment: Retail division: http://www.callcentric.com
Comment: NOC operation hours: 8:00AM to 11:59PM EST
Ref: https://rdap.arin.net/registry/entity/ACCAT
ReferralServer: rwhois://ipdb1.callcentric.com:4321
OrgAbuseHandle: NOC358-ARIN
OrgAbuseName: Network Operations Center
OrgAbusePhone: +1-212-379-4000
OrgAbuseEmail: ipnoc@callcentric.biz
OrgAbuseRef: https://rdap.arin.net/registry/entity/NOC358-ARIN
OrgNOCHandle: NOC358-ARIN
OrgNOCName: Network Operations Center
OrgNOCPhone: +1-212-379-4000
OrgNOCEmail: ipnoc@callcentric.biz
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC358-ARIN
OrgTechHandle: NOC358-ARIN
OrgTechName: Network Operations Center
OrgTechPhone: +1-212-379-4000
OrgTechEmail: ipnoc@callcentric.biz
OrgTechRef: https://rdap.arin.net/registry/entity/NOC358-ARIN
RTechHandle: NOC358-ARIN
RTechName: Network Operations Center
RTechPhone: +1-212-379-4000
RTechEmail: ipnoc@callcentric.biz
RTechRef: https://rdap.arin.net/registry/entity/NOC358-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.
#
Found a referral to ipdb1.callcentric.com:4321.