ASN AS35865 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS35865?

AS35865 is listed under Core & Main.

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.

AS35865 Core & Main | IPGeolocation.io

ASN Lookup Tool

Core & Main coreandmain.com

US 3 Routes

AS Data

AS35865

AS35865 – Core & Main

AS Number	35865
AS Name	COREANDMAIN
Organization	Core & Main(cml-205)
Country	US
Website	coreandmain.com
Number of IPv4 Routes	3
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2017-12-06

ASN Intelligence API for production workflows

Use ASN data for AS35865 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
131.153.250.0/23	AS35865	Core & Main	Core & Main	512
131.153.250.0/24	AS35865	Core & Main	Core & Main	256
131.153.251.0/24	AS35865	Core & Main	Core & Main	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:       35865
ASName:         COREANDMAIN
ASHandle:       AS35865
RegDate:        2017-12-06
Updated:        2017-12-06
Comment:        www.coreandmain.com    
Ref:            https://rdap.arin.net/registry/autnum/35865


OrgName:        Core & Main
OrgId:          CML-205
Address:        1830 Craig Park Court
City:           St. Louis
StateProv:      MO
PostalCode:     63146
Country:        US
RegDate:        2017-11-30
Updated:        2019-10-01
Ref:            https://rdap.arin.net/registry/entity/CML-205


OrgNOCHandle: CMN2-ARIN
OrgNOCName:   Core and Main NOC
OrgNOCPhone:  +1-229-227-8686 
OrgNOCEmail:  NetworkEng@coreandmain.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/CMN2-ARIN

OrgTechHandle: HARRE96-ARIN
OrgTechName:   Harrell, Collin 
OrgTechPhone:  +1-229-227-8640 
OrgTechEmail:  collin.harrell@coreandmain.com
OrgTechRef:    https://rdap.arin.net/registry/entity/HARRE96-ARIN

OrgAbuseHandle: CMA363-ARIN
OrgAbuseName:   Core and Main Abuse
OrgAbusePhone:  +1-229-227-8686 
OrgAbuseEmail:  infosec@coreandmain.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CMA363-ARIN

OrgTechHandle: WILKE322-ARIN
OrgTechName:   Wilkerson, Clint 
OrgTechPhone:  +1-229-227-8650 
OrgTechEmail:  clint.wilkerson@coreandmain.com
OrgTechRef:    https://rdap.arin.net/registry/entity/WILKE322-ARIN

OrgTechHandle: CMT27-ARIN
OrgTechName:   Core and Main Tech
OrgTechPhone:  +1-229-227-8686 
OrgTechEmail:  NetworkEng@coreandmain.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CMT27-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

Peers

AS Number	Description	Country
AS1239	Cogent Communications, LLC	US
AS1299	Arelion Sweden AB	SE
AS6939	Hurricane Electric LLC	US
AS2914	NTT America, Inc.	US
AS174	Cogent Communications, LLC	US

Upstreams

AS Number	Description	Country
AS1299	Arelion Sweden AB	SE
AS6939	Hurricane Electric LLC	US
AS2914	NTT America, Inc.	US
AS174	Cogent Communications, LLC	US