ASN AS4581 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS4581?

AS4581 is listed under Socket Holdings 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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AS4581 Socket Holdings Corporation

Socket Holdings Corporation socket.net

US 51 Routes

AS Data

AS4581

AS4581 – Socket Holdings Corporation

AS Number	4581
AS Name	SOCKET
Organization	Socket Holdings Corporation (sock)
Country	US
Website	socket.net
Number of IPv4 Routes	51
Number of IPv6 Routes	0
ASN type	ISP
Registry	ARIN
Date Allocated	1995-05-01

ASN Intelligence API for production workflows

Use ASN data for AS4581 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
174.34.38.0/23	AS4581	Socket Holdings Corporation	Socket Telecom LLC	512
216.106.77.0/24	AS4581	Socket Holdings Corporation	Socket Telecom LLC	256
38.45.192.0/21	AS4581	Socket Holdings Corporation	Socket Holdings Corporation	2048
199.242.192.0/24	AS4581	Socket Holdings Corporation	Bothwell Regional Health Center	256
154.36.193.0/24	AS4581	Socket Holdings Corporation	Socket Internet	256
216.106.0.0/18	AS4581	Socket Holdings Corporation	Socket Telecom LLC	16384
174.34.32.0/20	AS4581	Socket Holdings Corporation	Socket Telecom LLC	4096
38.255.128.0/18	AS4581	Socket Holdings Corporation	Socket Internet	16384
38.110.179.0/24	AS4581	Socket Holdings Corporation	Socket Holdings Corporation	256
154.36.208.0/24	AS4581	Socket Holdings Corporation	Socket Internet	256
38.69.28.0/24	AS4581	HUNTEL.NET	MOUNDVILLE TELEPHONE COMPANY, INC.	256
38.212.0.0/18	AS4581	Socket Holdings Corporation	Socket Internet	16384
199.47.239.0/24	AS4581	Socket Holdings Corporation	Tranquility Internet Services Inc.	256
38.2.234.0/24	AS4581	Socket Holdings Corporation	Socket Holdings Corporation	256
38.212.52.0/22	AS4581	Socket Holdings Corporation	Socket Internet	1024
38.212.56.0/21	AS4581	Socket Holdings Corporation	Socket Internet	2048
199.47.238.0/24	AS4581	Socket Holdings Corporation	Tranquility Internet Services Inc.	256
199.187.161.0/24	AS4581	Socket Holdings Corporation	Socket Telecom LLC	256
38.212.44.0/24	AS4581	Socket Holdings Corporation	Socket Internet	256
174.34.45.0/24	AS4581	Socket Holdings Corporation	Socket Telecom LLC	256
216.106.35.0/24	AS4581	Socket Holdings Corporation	Socket Holdings Corporation	256
154.36.204.0/24	AS4581	Socket Holdings Corporation	Socket Internet	256
74.118.14.0/24	AS4581	Socket Holdings Corporation	Tranquility Internet Services Inc.	256
199.187.160.0/22	AS4581	Socket Holdings Corporation	Socket Telecom LLC	1024
38.212.24.0/22	AS4581	Socket Holdings Corporation	Socket Internet	1024
216.106.51.0/24	AS4581	Socket Holdings Corporation	Socket Telecom LLC	256
38.255.146.0/23	AS4581	Socket Holdings Corporation	Socket Internet	512
38.212.50.0/23	AS4581	Socket Holdings Corporation	Socket Internet	512
38.69.29.0/24	AS4581	HUNTEL.NET	MOUNDVILLE TELEPHONE COMPANY, INC.	256
154.36.192.0/18	AS4581	Socket Holdings Corporation	Socket Internet	16384
216.106.64.0/19	AS4581	Socket Holdings Corporation	SOCKET SOCKET TELECOM DHCP	8192
38.255.129.0/24	AS4581	Socket Holdings Corporation	Socket Internet	256
38.2.235.0/24	AS4581	Socket Holdings Corporation	Socket Holdings Corporation	256
216.106.39.0/24	AS4581	Socket Holdings Corporation	Socket Telecom LLC	256
38.2.238.0/24	AS4581	Socket Holdings Corporation	Socket Internet	256
64.85.192.0/19	AS4581	Socket Holdings Corporation	Sorrels Auto Parts	8192
38.255.145.0/24	AS4581	Socket Holdings Corporation	Socket Internet	256
154.36.236.0/23	AS4581	Socket Holdings Corporation	Socket Internet	512
154.36.220.0/24	AS4581	Socket Holdings Corporation	Socket Internet	256
174.34.22.0/23	AS4581	Socket Holdings Corporation	Socket Telecom LLC	512
38.212.36.0/23	AS4581	Socket Holdings Corporation	Socket Internet	512
192.245.43.0/24	AS4581	Socket Holdings Corporation	Central Methodist University	256
38.110.180.0/24	AS4581	Socket Holdings Corporation	Socket Holdings Corporation	256
154.36.201.0/24	AS4581	Socket Holdings Corporation	Socket Internet	256
38.110.181.0/24	AS4581	Socket Holdings Corporation	Socket Holdings Corporation	256
38.2.233.0/24	AS4581	Socket Holdings Corporation	Socket Holdings Corporation	256
192.245.42.0/24	AS4581	Socket Holdings Corporation	Central Methodist University	256
174.34.0.0/19	AS4581	Socket Holdings Corporation	Socket Telecom LLC	8192
154.36.245.0/24	AS4581	Socket Holdings Corporation	Socket Internet	256
38.110.178.0/24	AS4581	Socket Holdings Corporation	Socket Holdings Corporation	256
38.2.232.0/24	AS4581	Socket Holdings Corporation	Socket Holdings Corporation	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:       4581
ASName:         SOCKET
ASHandle:       AS4581
RegDate:        1995-05-01
Updated:        2019-09-04
Ref:            https://rdap.arin.net/registry/autnum/4581


OrgName:        Socket Holdings Corporation
OrgId:          SOCK
Address:        2703 Clark Lane
City:           Columbia
StateProv:      MO
PostalCode:     65202
Country:        US
RegDate:        
Updated:        2026-07-21
Comment:        Geofeed http://www.socket.net/geofeed.csv
Ref:            https://rdap.arin.net/registry/entity/SOCK


OrgAbuseHandle: DNSAD39-ARIN
OrgAbuseName:   DNS Administrator
OrgAbusePhone:  +1-573-817-0000 
OrgAbuseEmail:  dns@socket.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/DNSAD39-ARIN

OrgNOCHandle: PINKE44-ARIN
OrgNOCName:   Pinkerton, Chris 
OrgNOCPhone:  +1-573-481-2733 
OrgNOCEmail:  chris.pinkerton@corp.socket.net
OrgNOCRef:    https://rdap.arin.net/registry/entity/PINKE44-ARIN

OrgTechHandle: DNSAD39-ARIN
OrgTechName:   DNS Administrator
OrgTechPhone:  +1-573-817-0000 
OrgTechEmail:  dns@socket.net
OrgTechRef:    https://rdap.arin.net/registry/entity/DNSAD39-ARIN

RAbuseHandle: DNSAD39-ARIN
RAbuseName:   DNS Administrator
RAbusePhone:  +1-573-817-0000 
RAbuseEmail:  dns@socket.net
RAbuseRef:    https://rdap.arin.net/registry/entity/DNSAD39-ARIN

RTechHandle: DNSAD39-ARIN
RTechName:   DNS Administrator
RTechPhone:  +1-573-817-0000 
RTechEmail:  dns@socket.net
RTechRef:    https://rdap.arin.net/registry/entity/DNSAD39-ARIN

RNOCHandle: DNSAD39-ARIN
RNOCName:   DNS Administrator
RNOCPhone:  +1-573-817-0000 
RNOCEmail:  dns@socket.net
RNOCRef:    https://rdap.arin.net/registry/entity/DNSAD39-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" : "4581",
    "as_handle" : "AS4581",
    "as_name" : "SOCKET",
    "tech_contacts" : [ "DNSAD39-ARIN", "DNSAD39-ARIN" ],
    "abuse_contacts" : [ "DNSAD39-ARIN", "DNSAD39-ARIN" ],
    "date_created" : "1995-05-01",
    "date_updated" : "2019-09-04",
    "source" : "https://rdap.arin.net/registry/autnum/4581"
  } ],
  "organization" : {
    "handle" : "SOCK",
    "name" : "Socket Holdings Corporation",
    "address" : [ "2703 Clark Lane", "Columbia", "MO", "65202", "US" ],
    "street" : "Clark Lane",
    "city" : "Columbia",
    "state" : "MO",
    "zip_code" : "65202",
    "country" : [ "US" ],
    "date_updated" : "2026-07-21",
    "source" : "https://rdap.arin.net/registry/entity/SOCK",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "DNSAD39-ARIN",
    "name" : "DNS Administrator",
    "email" : [ "dns@socket.net" ],
    "phone" : [ "+1-573-817-0000" ],
    "source" : "https://rdap.arin.net/registry/entity/DNSAD39-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "DNSAD39-ARIN",
    "name" : "DNS Administrator",
    "email" : [ "dns@socket.net" ],
    "phone" : [ "+1-573-817-0000" ],
    "source" : "https://rdap.arin.net/registry/entity/DNSAD39-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS13341	Tranquility Internet Services Inc.	US
AS393668	State Fair Community College	US
AS55056	Central Bancompany, Inc.	US
AS393577	Tritan Development	US
AS401538	Nova86	US
AS399802	The Fibersmith Company	US
AS40673	Shelter Mutual Insurance	US
AS6939	Hurricane Electric LLC	US
AS395311	MidwayUSA	US
AS10242	US Internet Corp	US
AS402250	Apogee Telecom Inc.	US
AS62723	CARFAX, Inc.	US
AS46755	Columbia College	US
AS52025	ParadoxNetworks Limited	GB
AS36236	NetActuate, Inc	US
AS53597	Hoyos Consulting LLC	US
AS19754	The Fusion Network, LLC	US
AS46733	x6c	US
AS397092	Bays ET highspeed LLC	US
AS210667	Adam Goodenough	GB
AS401718	Haulers Insurance Company Inc.	US
AS36779	Learfield Communications, LLC	US
AS397323	MISSOURI EMPLOYERS MUTUAL INSURANCE COMPANY	US
AS1239	Cogent Communications, LLC	US
AS16697	City of Columbia, MO	US
AS174	Cogent Communications, LLC	US
AS397479	Huber & Associates, Inc.	US
AS53343	Ntrix Infrastructure	US
AS1003	andrewnet	US
AS52210	Accuris Technologies Ltd.	CA
AS44354	BROCK VOJKOVIC	AU
AS3356	Level 3 Parent, LLC	US
AS11929	MFA Oil Company	US
AS26457	nonexiste.net	US

Upstreams

AS Number	Description	Country
AS52025	ParadoxNetworks Limited	GB
AS6939	Hurricane Electric LLC	US
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US

Downstreams

AS Number	Description	Country
AS13341	Tranquility Internet Services Inc.	US
AS393668	State Fair Community College	US
AS397323	MISSOURI EMPLOYERS MUTUAL INSURANCE COMPANY	US
AS55056	Central Bancompany, Inc.	US
AS399802	The Fibersmith Company	US
AS40673	Shelter Mutual Insurance	US
AS16697	City of Columbia, MO	US
AS395311	MidwayUSA	US
AS402250	Apogee Telecom Inc.	US
AS397479	Huber & Associates, Inc.	US
AS62723	CARFAX, Inc.	US
AS46755	Columbia College	US
AS397092	Bays ET highspeed LLC	US
AS11929	MFA Oil Company	US
AS401718	Haulers Insurance Company Inc.	US
AS36779	Learfield Communications, LLC	US

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