ASN AS36221 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS36221?

AS36221 is listed under Esosoft Corporation.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS36221 Esosoft Corporation | IPGeolocation.io

ASN Lookup Tool

Esosoft Corporation esosoft.net

US 7 Routes

AS Data

AS36221

AS36221 – Esosoft Corporation

AS Number	36221
AS Name	ESOSOFT
Organization	Esosoft Corporation (esosof)
Country	US
Website	esosoft.net
Number of IPv4 Routes	4
Number of IPv6 Routes	3
ASN type	ISP
Registry	ARIN
Date Allocated	2005-10-11

ASN Intelligence API for production workflows

Use ASN data for AS36221 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2607:f7c8:400::/48	AS36221	Esosoft Corporation	Esosoft Corporation	~1×10²⁴
2607:f7c8:700::/48	AS36221	Esosoft Corporation	Esosoft Corporation	~1×10²⁴
2607:f7c8::/32	AS36221	Esosoft Corporation	Esosoft Corporation	~79×10²⁷
66.241.144.0/24	AS36221	Esosoft Corporation	Esosoft Corporation	256
66.241.150.0/24	AS36221	Esosoft Corporation	Esosoft Corporation	256
66.241.144.0/20	AS36221	Esosoft Corporation	Esosoft Corporation	4096
192.160.191.0/24	AS36221	Esosoft Corporation	Omni Systems	256

Raw Whois Response

#
# 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:       36221
ASName:         ESOSOFT
ASHandle:       AS36221
RegDate:        2005-10-11
Updated:        2022-12-20
Ref:            https://rdap.arin.net/registry/autnum/36221


OrgName:        Esosoft Corporation
OrgId:          ESOSOF
Address:        340 S Lemon Ave #8896
City:           Walnut
StateProv:      CA
PostalCode:     91789
Country:        US
RegDate:        2000-11-03
Updated:        2022-12-17
Ref:            https://rdap.arin.net/registry/entity/ESOSOF


OrgAbuseHandle: ENSH-ARIN
OrgAbuseName:   EsoSoft Network Systems Hostmaster
OrgAbusePhone:  +1-888-838-6303 
OrgAbuseEmail:  hostmaster@esosoft.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ENSH-ARIN

OrgTechHandle: ENSH-ARIN
OrgTechName:   EsoSoft Network Systems Hostmaster
OrgTechPhone:  +1-888-838-6303 
OrgTechEmail:  hostmaster@esosoft.net
OrgTechRef:    https://rdap.arin.net/registry/entity/ENSH-ARIN

RNOCHandle: ESOSO-ARIN
RNOCName:   EsoSoft Admin
RNOCPhone:  +1-888-838-6303 
RNOCEmail:  admin@esosoft.net
RNOCRef:    https://rdap.arin.net/registry/entity/ESOSO-ARIN

RTechHandle: ENSH-ARIN
RTechName:   EsoSoft Network Systems Hostmaster
RTechPhone:  +1-888-838-6303 
RTechEmail:  hostmaster@esosoft.net
RTechRef:    https://rdap.arin.net/registry/entity/ENSH-ARIN

RAbuseHandle: ESOSO-ARIN
RAbuseName:   EsoSoft Admin
RAbusePhone:  +1-888-838-6303 
RAbuseEmail:  admin@esosoft.net
RAbuseRef:    https://rdap.arin.net/registry/entity/ESOSO-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.
#

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "36221",
    "as_handle" : "AS36221",
    "as_name" : "ESOSOFT",
    "tech_contacts" : [ "ENSH-ARIN", "ENSH-ARIN" ],
    "abuse_contacts" : [ "ENSH-ARIN", "ESOSO-ARIN" ],
    "date_created" : "2005-10-11",
    "date_updated" : "2022-12-20",
    "source" : "https://rdap.arin.net/registry/autnum/36221"
  } ],
  "organization" : {
    "handle" : "ESOSOF",
    "name" : "Esosoft Corporation",
    "address" : [ "340 S Lemon Ave", "Walnut", "CA", "91789", "US" ],
    "street" : "S Lemon Ave",
    "city" : "Walnut",
    "state" : "CA",
    "zip_code" : "91789",
    "country" : [ "US" ],
    "date_created" : "2000-11-03",
    "date_updated" : "2022-12-17",
    "source" : "https://rdap.arin.net/registry/entity/ESOSOF",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "ENSH-ARIN",
    "name" : "EsoSoft Network Systems Hostmaster",
    "email" : [ "hostmaster@esosoft.net" ],
    "phone" : [ "+1-888-838-6303" ],
    "source" : "https://rdap.arin.net/registry/entity/ENSH-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "ENSH-ARIN",
    "name" : "EsoSoft Network Systems Hostmaster",
    "email" : [ "hostmaster@esosoft.net" ],
    "phone" : [ "+1-888-838-6303" ],
    "source" : "https://rdap.arin.net/registry/entity/ENSH-ARIN"
  }, {
    "handle" : "ESOSO-ARIN",
    "name" : "EsoSoft Admin",
    "email" : [ "admin@esosoft.net" ],
    "phone" : [ "+1-888-838-6303" ],
    "source" : "https://rdap.arin.net/registry/entity/ESOSO-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS36236	NetActuate, Inc	US
AS6939	Hurricane Electric LLC	US
AS174	Cogent Communications, LLC	US

Upstreams

AS Number	Description	Country
AS36236	NetActuate, Inc	US
AS6939	Hurricane Electric LLC	US
AS174	Cogent Communications, LLC	US