To assist you with debugging problems, this whois query was received from IP Address:

18.221.190.79

% APNIC found the following authoritative answer from: whois.arin.net
#
# 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 1997-2025, American Registry for Internet Numbers, Ltd.
#
NetRange:38.0.0.0 - 38.255.255.255
CIDR:38.0.0.0/8
NetName:COGENT-A
NetHandle:NET-38-0-0-0-1
Parent:()
NetType:Direct Allocation
OriginAS:AS174
Organization:PSINet, Inc. (PSI)
RegDate:1991-04-16
Updated:2023-10-11
Comment:IP allocations within 38.0.0.0/8 are used for Cogent customer static IP assignments.
Comment:
Comment:Reassignment information for this block can be found at rwhois.cogentco.com 4321
Comment:
Comment:Geofeed https://geofeed.cogentco.com/geofeed.csv
Ref:https://rdap.arin.net/registry/ip/38.0.0.0
OrgName:PSINet, Inc.
OrgId:PSI
Address:2450 N Street NW
City:Washington
StateProv:DC
PostalCode:20037
Country:US
RegDate:
Updated:2023-10-11
Comment:Geofeed https://geofeed.cogentco.com/geofeed.csv
Ref:https://rdap.arin.net/registry/entity/PSI
ReferralServer:rwhois://rwhois.cogentco.com:4321
OrgAbuseHandle:COGEN-ARIN
OrgAbuseName:Cogent Abuse
OrgAbusePhone:+1-877-875-4311
OrgAbuseEmail:abuse@cogentco.com
OrgAbuseRef:https://rdap.arin.net/registry/entity/COGEN-ARIN
OrgNOCHandle:ZC108-ARIN
OrgNOCName:Cogent Communications
OrgNOCPhone:+1-877-875-4311
OrgNOCEmail:noc@cogentco.com
OrgNOCRef:https://rdap.arin.net/registry/entity/ZC108-ARIN
OrgTechHandle:IPALL-ARIN
OrgTechName:IP Allocation
OrgTechPhone:+1-877-875-4311
OrgTechEmail:ipalloc@cogentco.com
OrgTechRef:https://rdap.arin.net/registry/entity/IPALL-ARIN
RTechHandle:PSI-NISC-ARIN
RTechName:IP Allocation
RTechPhone:+1-877-875-4311
RTechEmail:ipalloc@cogentco.com
RTechRef:https://rdap.arin.net/registry/entity/PSI-NISC-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 1997-2025, American Registry for Internet Numbers, Ltd.
#

e.g. 203.119.42.0/24

IP address lookups Miscellaneous queries
-l

1st level less specific

Returns smallest IP address range that includes the queried IP address or range

-i

Inverse attributes

Returns objects with an attribute that matches the query text and attribute type
-L

All less specific

Return all larger IP address ranges that include the queried IP address or range

-T

Object types

Results that match the query and are of a specified object type
-m

1st level more specific

Returns first level more specific address ranges within the boundaries of the queried IP address range
-M

All more specific

Returns all more specific address ranges within the boundaries of the queried IP address range

Query hints

  • Include "AS" in front of an AS number.
    Example: AS4808

  • Include "-t" (template only) or "-v" (template and description) in front of an object name to view the template
    Example: -t inetnum

-x

Exact match only

Returns address range that exactly matches the queried IP address range
-d

Associated reverse domain

Returns IP address range and associated reverse domain

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