ASN AS20251 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS20251?

AS20251 is listed under SolarWinds North America, Inc..

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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AS20251 SolarWinds North America, Inc.

ASN Lookup Tool

SolarWinds North America, Inc. solarwinds.com

US 11 Routes

AS Data

AS20251

AS20251 – SolarWinds North America, Inc.

AS Number	20251
AS Name	SOLARWINDSAUSTIN
Organization	SolarWinds North America, Inc. (solar-16)
Country	US
Website	solarwinds.com
Number of IPv4 Routes	6
Number of IPv6 Routes	5
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2008-05-27

ASN Intelligence API for production workflows

Use ASN data for AS20251 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
74.115.12.0/24	AS20251	SolarWinds North America, Inc.	SolarWinds North America, Inc.	256
2602:81a:c004::/48	AS20251	SolarWinds North America, Inc.	SolarWinds North America, Inc.	~1×10²⁴
64.129.144.0/24	AS20251	SolarWinds North America, Inc.	SolarWinds North America, Inc.	256
67.79.13.0/24	AS20251	SolarWinds North America, Inc.	SOLARWINDS 3RD TRY	256
74.115.13.0/24	AS20251	SolarWinds North America, Inc.	SolarWinds North America, Inc.	256
2602:81a:c003::/48	AS20251	SolarWinds North America, Inc.	SolarWinds North America, Inc.	~1×10²⁴
2602:81a:c002::/48	AS20251	SolarWinds North America, Inc.	SolarWinds North America, Inc.	~1×10²⁴
2602:81a:c001::/48	AS20251	SolarWinds North America, Inc.	SolarWinds North America, Inc.	~1×10²⁴
74.115.15.0/24	AS20251	SolarWinds North America, Inc.	SolarWinds North America, Inc.	256
74.115.14.0/24	AS20251	SolarWinds North America, Inc.	SolarWinds North America, Inc.	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:       20251
ASName:         SOLARWINDSAUSTIN
ASHandle:       AS20251
RegDate:        2008-05-27
Updated:        2012-03-02
Ref:            https://rdap.arin.net/registry/autnum/20251


OrgName:        SolarWinds North America, Inc.
OrgId:          SOLAR-16
Address:        7171 Southwest Parkway
Address:        Building 400
City:           Austin
StateProv:      TX
PostalCode:     78735
Country:        US
RegDate:        2008-04-03
Updated:        2024-11-15
Ref:            https://rdap.arin.net/registry/entity/SOLAR-16


OrgAbuseHandle: NOC3032-ARIN
OrgAbuseName:   Network Operations Center
OrgAbusePhone:  +1-512-682-9300 
OrgAbuseEmail:  as@solarwinds.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NOC3032-ARIN

OrgNOCHandle: NOC3032-ARIN
OrgNOCName:   Network Operations Center
OrgNOCPhone:  +1-512-682-9300 
OrgNOCEmail:  as@solarwinds.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC3032-ARIN

OrgTechHandle: NOC3032-ARIN
OrgTechName:   Network Operations Center
OrgTechPhone:  +1-512-682-9300 
OrgTechEmail:  as@solarwinds.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NOC3032-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" : "20251",
    "as_handle" : "AS20251",
    "as_name" : "SOLARWINDSAUSTIN",
    "tech_contacts" : [ "NOC3032-ARIN" ],
    "abuse_contacts" : [ "NOC3032-ARIN" ],
    "date_created" : "2008-05-27",
    "date_updated" : "2012-03-02",
    "source" : "https://rdap.arin.net/registry/autnum/20251"
  } ],
  "organization" : {
    "handle" : "SOLAR-16",
    "name" : "SolarWinds North America, Inc.",
    "address" : [ "7171 Southwest Parkway", "Building 400", "Austin", "TX", "78735", "US" ],
    "street" : "Southwest Parkway",
    "city" : "Austin",
    "state" : "TX",
    "zip_code" : "78735",
    "country" : [ "US" ],
    "date_created" : "2008-04-03",
    "date_updated" : "2024-11-15",
    "source" : "https://rdap.arin.net/registry/entity/SOLAR-16",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "NOC3032-ARIN",
    "name" : "Network Operations Center",
    "email" : [ "as@solarwinds.com" ],
    "phone" : [ "+1-512-682-9300" ],
    "source" : "https://rdap.arin.net/registry/entity/NOC3032-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NOC3032-ARIN",
    "name" : "Network Operations Center",
    "email" : [ "as@solarwinds.com" ],
    "phone" : [ "+1-512-682-9300" ],
    "source" : "https://rdap.arin.net/registry/entity/NOC3032-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS15830	Equinix EMEA Acquisition Enterprises B.V.	NL
AS7018	AT&T Enterprises, LLC	US
AS15830	Equinix (EMEA) Acquisition Enterprises B.V.	NL
AS3356	Level 3 Parent, LLC	US
AS23005	SWITCH, LTD	US
AS11427	Charter Communications Inc	US

Upstreams

AS Number	Description	Country
AS15830	Equinix EMEA Acquisition Enterprises B.V.	NL
AS3356	Level 3 Parent, LLC	US
AS23005	SWITCH, LTD	US
AS11427	Charter Communications Inc	US