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AS53946 Henry Mayo Newhall Memorial Hospital

Q: Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

ASN Lookup Tool

Henry Mayo Newhall Memorial Hospital henrymayo.com

US 1 Routes

AS Data

AS53946

AS53946 – Henry Mayo Newhall Memorial Hospital

AS Number	53946
AS Name	HMNMH
Organization	Henry Mayo Newhall Memorial Hospital(hmnmh)
Country	US
Website	henrymayo.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2011-08-12

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
12.221.65.0/24	AS53946	Henry Mayo Newhall Memorial Hospital	HENRY MAYO NEWHALL HOSPITAL	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:       53946
ASName:         HMNMH
ASHandle:       AS53946
RegDate:        2011-08-12
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/53946


OrgName:        Henry Mayo Newhall Memorial Hospital
OrgId:          HMNMH
Address:        23845 McBean Parkway
City:           Valencia
StateProv:      CA
PostalCode:     91355
Country:        US
RegDate:        2011-07-11
Updated:        2015-09-18
Ref:            https://rdap.arin.net/registry/entity/HMNMH


OrgAbuseHandle: ARISP-ARIN
OrgAbuseName:   Arispe, Tito 
OrgAbusePhone:  +1-661-200-1269 
OrgAbuseEmail:  arispetr@henrymayo.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ARISP-ARIN

OrgTechHandle: ARISP-ARIN
OrgTechName:   Arispe, Tito 
OrgTechPhone:  +1-661-200-1269 
OrgTechEmail:  arispetr@henrymayo.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ARISP-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
AS7018	AT&T Enterprises, LLC	US

Upstreams

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US

Frequently Asked Questions

What is ASN AS53946?

ASN AS53946 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS53946?

AS53946 is listed under Henry Mayo Newhall Memorial Hospital.

What do peers, upstreams, and downstreams mean?

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 included here?

WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.