ASN AS20289 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS20289?

AS20289 is listed under ISG Technology.

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?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS20289 ISG Technology | IPGeolocation.io

ASN Lookup Tool

ISG Technology isgtech.com

US 8 Routes

AS Data

AS20289

AS20289 – ISG Technology

AS Number	20289
AS Name	AS-ISGNOC
Organization	ISG Technology (isgte-1)
Country	US
Website	isgtech.com
Number of IPv4 Routes	8
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2007-12-27

ASN Intelligence API for production workflows

Use ASN data for AS20289 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
205.173.100.0/24	AS20289	ISG Technology	ISG Technology	256
205.173.101.0/24	AS20289	ISG Technology	ISG Technology	256
205.173.96.0/24	AS20289	ISG Technology	ISG Technology	256
205.173.103.0/24	AS20289	ISG Technology	ISG Technology	256
205.173.102.0/24	AS20289	ISG Technology	ISG Technology	256
205.173.97.0/24	AS20289	ISG Technology	ISG Technology	256
205.173.98.0/24	AS20289	ISG Technology	ISG Technology	256
205.173.99.0/24	AS20289	ISG Technology	ISG Technology	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:       20289
ASName:         AS-ISGNOC
ASHandle:       AS20289
RegDate:        2007-12-27
Updated:        2012-02-24
Ref:            https://rdap.arin.net/registry/autnum/20289


OrgName:        ISG Technology
OrgId:          ISGTE-1
Address:        112 S Lee St.
City:           Clearwater
StateProv:      KS
PostalCode:     67026
Country:        US
RegDate:        2007-12-20
Updated:        2025-10-09
Comment:        http://www.isgdatacenter.com
Ref:            https://rdap.arin.net/registry/entity/ISGTE-1

ReferralServer:  rwhois://rwhois.isgnoc.net:4321

OrgTechHandle: COITD-ARIN
OrgTechName:   Coit, Dean 
OrgTechPhone:  +1-405-516-7475 
OrgTechEmail:  dcoit@isgtech.com
OrgTechRef:    https://rdap.arin.net/registry/entity/COITD-ARIN

OrgNOCHandle: NOM14-ARIN
OrgNOCName:   Network Operations Manager
OrgNOCPhone:  +1-913-219-1802 
OrgNOCEmail:  dcsupport@isgtech.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOM14-ARIN

OrgTechHandle: NOM14-ARIN
OrgTechName:   Network Operations Manager
OrgTechPhone:  +1-913-219-1802 
OrgTechEmail:  dcsupport@isgtech.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NOM14-ARIN

OrgAbuseHandle: NOM14-ARIN
OrgAbuseName:   Network Operations Manager
OrgAbusePhone:  +1-913-219-1802 
OrgAbuseEmail:  dcsupport@isgtech.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NOM14-ARIN

RNOCHandle: NOM14-ARIN
RNOCName:   Network Operations Manager
RNOCPhone:  +1-913-219-1802 
RNOCEmail:  dcsupport@isgtech.com
RNOCRef:    https://rdap.arin.net/registry/entity/NOM14-ARIN

RTechHandle: NOM14-ARIN
RTechName:   Network Operations Manager
RTechPhone:  +1-913-219-1802 
RTechEmail:  dcsupport@isgtech.com
RTechRef:    https://rdap.arin.net/registry/entity/NOM14-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" : "20289",
    "as_handle" : "AS20289",
    "as_name" : "AS-ISGNOC",
    "tech_contacts" : [ "COITD-ARIN", "NOM14-ARIN", "NOM14-ARIN" ],
    "abuse_contacts" : [ "NOM14-ARIN" ],
    "date_created" : "2007-12-27",
    "date_updated" : "2012-02-24",
    "source" : "https://rdap.arin.net/registry/autnum/20289"
  } ],
  "organization" : {
    "handle" : "ISGTE-1",
    "name" : "ISG Technology",
    "address" : [ "112 S Lee St.", "Clearwater", "KS", "67026", "US" ],
    "street" : "S Lee St.",
    "city" : "Clearwater",
    "state" : "KS",
    "zip_code" : "67026",
    "country" : [ "US" ],
    "date_created" : "2007-12-20",
    "date_updated" : "2025-10-09",
    "source" : "https://rdap.arin.net/registry/entity/ISGTE-1",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "COITD-ARIN",
    "name" : "Coit, Dean",
    "email" : [ "dcoit@isgtech.com" ],
    "phone" : [ "+1-405-516-7475" ],
    "source" : "https://rdap.arin.net/registry/entity/COITD-ARIN"
  }, {
    "handle" : "NOM14-ARIN",
    "name" : "Network Operations Manager",
    "email" : [ "dcsupport@isgtech.com" ],
    "phone" : [ "+1-913-219-1802" ],
    "source" : "https://rdap.arin.net/registry/entity/NOM14-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NOM14-ARIN",
    "name" : "Network Operations Manager",
    "email" : [ "dcsupport@isgtech.com" ],
    "phone" : [ "+1-913-219-1802" ],
    "source" : "https://rdap.arin.net/registry/entity/NOM14-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS62943	Missouri Network Alliance, LLC	US
AS30029	Dobson Technologies - Transport and Telecom Solutions, LLC	US
AS30029	Dobson Technologies Transport and Telecom Solutions, LLC	US

Upstreams

AS Number	Description	Country
AS62943	Missouri Network Alliance, LLC	US
AS30029	Dobson Technologies Transport and Telecom Solutions, LLC	US