ASN AS53721 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS53721?

AS53721 is listed under Coretelligent, LLC.

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.

AS53721 Coretelligent, LLC | IPGeolocation.io

ASN Lookup Tool

Coretelligent, LLC coretelligent.com

US 2 Routes

AS Data

AS53721

AS53721 – Coretelligent, LLC

AS Number	53721
AS Name	CORETELLIGENT
Organization	Coretelligent, LLC (cl-19)
Country	US
Website	coretelligent.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2011-05-03

ASN Intelligence API for production workflows

Use ASN data for AS53721 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
131.239.17.0/24	AS53721	Coretelligent, LLC	Coretelligent	256
173.243.231.0/24	AS53721	Coretelligent, LLC	Coretelligent, LLC	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:       53721
ASName:         CORETELLIGENT
ASHandle:       AS53721
RegDate:        2011-05-03
Updated:        2020-03-23
Ref:            https://rdap.arin.net/registry/autnum/53721


OrgName:        Coretelligent, LLC
OrgId:          CL-19
Address:        197 1ST AVENUE, SUITE 360
City:           Needham
StateProv:      MA
PostalCode:     02494
Country:        US
RegDate:        2011-04-26
Updated:        2022-07-25
Comment:        https://coretelligent.com
Ref:            https://rdap.arin.net/registry/entity/CL-19


OrgTechHandle: TECH568-ARIN
OrgTechName:   TECH
OrgTechPhone:  +1-855-841-5888 
OrgTechEmail:  notifications@core.tech
OrgTechRef:    https://rdap.arin.net/registry/entity/TECH568-ARIN

OrgNOCHandle: NOC11967-ARIN
OrgNOCName:   Network Operations Center
OrgNOCPhone:  +1-855-841-5888 
OrgNOCEmail:  notifications@coretelligent.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC11967-ARIN

OrgAbuseHandle: TECH568-ARIN
OrgAbuseName:   TECH
OrgAbusePhone:  +1-855-841-5888 
OrgAbuseEmail:  notifications@core.tech
OrgAbuseRef:    https://rdap.arin.net/registry/entity/TECH568-ARIN

OrgTechHandle: NOYES27-ARIN
OrgTechName:   Noyes, Adam 
OrgTechPhone:  +1-781-247-4904 
OrgTechEmail:  adam@core.tech
OrgTechRef:    https://rdap.arin.net/registry/entity/NOYES27-ARIN

RNOCHandle: NOC11967-ARIN
RNOCName:   Network Operations Center
RNOCPhone:  +1-855-841-5888 
RNOCEmail:  notifications@coretelligent.com
RNOCRef:    https://rdap.arin.net/registry/entity/NOC11967-ARIN

RTechHandle: TECH568-ARIN
RTechName:   TECH
RTechPhone:  +1-855-841-5888 
RTechEmail:  notifications@core.tech
RTechRef:    https://rdap.arin.net/registry/entity/TECH568-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" : "53721",
    "as_handle" : "AS53721",
    "as_name" : "CORETELLIGENT",
    "tech_contacts" : [ "TECH568-ARIN", "NOYES27-ARIN", "TECH568-ARIN" ],
    "abuse_contacts" : [ "TECH568-ARIN" ],
    "date_created" : "2011-05-03",
    "date_updated" : "2020-03-23",
    "source" : "https://rdap.arin.net/registry/autnum/53721"
  } ],
  "organization" : {
    "handle" : "CL-19",
    "name" : "Coretelligent, LLC",
    "address" : [ "197 1ST AVENUE, SUITE 360", "Needham", "MA", "02494", "US" ],
    "street" : "1st Avenue",
    "city" : "Needham",
    "state" : "MA",
    "zip_code" : "02494",
    "country" : [ "US" ],
    "date_created" : "2011-04-26",
    "date_updated" : "2022-07-25",
    "source" : "https://rdap.arin.net/registry/entity/CL-19",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "TECH568-ARIN",
    "name" : "TECH",
    "email" : [ "notifications@core.tech" ],
    "phone" : [ "+1-855-841-5888" ],
    "source" : "https://rdap.arin.net/registry/entity/TECH568-ARIN"
  }, {
    "handle" : "NOYES27-ARIN",
    "name" : "Noyes, Adam",
    "email" : [ "adam@core.tech" ],
    "phone" : [ "+1-781-247-4904" ],
    "source" : "https://rdap.arin.net/registry/entity/NOYES27-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "TECH568-ARIN",
    "name" : "TECH",
    "email" : [ "notifications@core.tech" ],
    "phone" : [ "+1-855-841-5888" ],
    "source" : "https://rdap.arin.net/registry/entity/TECH568-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US
AS1239	Cogent Communications, LLC	US
AS174	Cogent Communications, LLC	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US
AS174	Cogent Communications, LLC	US