ASN AS3527 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS3527?

AS3527 is listed under National Institutes of Health.

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.

AS3527 National Institutes of Health

ASN Lookup Tool

National Institutes of Health mail.nih.gov

US 14 Routes

AS Data

AS3527

AS3527 – National Institutes of Health

AS Number	3527
AS Name	NIH-NET
Organization	National Institutes of Health(nih-z)
Country	US
Website	mail.nih.gov
Number of IPv4 Routes	13
Number of IPv6 Routes	1
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	1994-04-07

ASN Intelligence API for production workflows

Use ASN data for AS3527 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
128.231.245.0/24	AS3527	National Institutes of Health	National Institutes of Health	256
192.231.146.0/23	AS3527	National Institutes of Health	National Institutes of Health	512
165.112.0.0/16	AS30387	National Institutes of Health	National Institutes of Health	65536
156.40.0.0/16	AS3527	National Institutes of Health	National Institutes of Health	65536
165.112.136.0/21	AS3527	National Institutes of Health	National Institutes of Health	2048
192.231.147.0/24	AS3527	National Institutes of Health	National Institutes of Health	256
162.99.224.0/19	AS3527	National Institutes of Health	HRSA	8192
192.231.145.0/24	AS3527	National Institutes of Health	National Institutes of Health	256
192.231.146.0/24	AS3527	National Institutes of Health	National Institutes of Health	256
137.187.0.0/16	AS3527	National Institutes of Health	National Institutes of Health	65536

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:       3527
ASName:         NIH-NET
ASHandle:       AS3527
RegDate:        1994-04-07
Updated:        2022-10-28    
Ref:            https://rdap.arin.net/registry/autnum/3527


OrgName:        National Institutes of Health
OrgId:          NIH-Z
Address:        9000 Rockville Pike
Address:        MSC 4805
City:           Bethesda
StateProv:      MD
PostalCode:     20892-4805
Country:        US
RegDate:        2022-10-09
Updated:        2025-06-05
Ref:            https://rdap.arin.net/registry/entity/NIH-Z


OrgNOCHandle: NIHAD-ARIN
OrgNOCName:   NIHadm
OrgNOCPhone:  +1-301-402-3141 
OrgNOCEmail:  citnsarin@mail.nih.gov
OrgNOCRef:    https://rdap.arin.net/registry/entity/NIHAD-ARIN

OrgRoutingHandle: NIHTE-ARIN
OrgRoutingName:   NIHtechs
OrgRoutingPhone:  +1-301-402-3141 
OrgRoutingEmail:  citnsarin@mail.nih.gov
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NIHTE-ARIN

OrgDNSHandle: NIHAD-ARIN
OrgDNSName:   NIHadm
OrgDNSPhone:  +1-301-402-3141 
OrgDNSEmail:  citnsarin@mail.nih.gov
OrgDNSRef:    https://rdap.arin.net/registry/entity/NIHAD-ARIN

OrgAbuseHandle: NIHTE-ARIN
OrgAbuseName:   NIHtechs
OrgAbusePhone:  +1-301-402-3141 
OrgAbuseEmail:  citnsarin@mail.nih.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NIHTE-ARIN

OrgTechHandle: NIHTE-ARIN
OrgTechName:   NIHtechs
OrgTechPhone:  +1-301-402-3141 
OrgTechEmail:  citnsarin@mail.nih.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/NIHTE-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
AS19050	U.S. Department of Health & Human Services	US
AS6150	National Cancer Institute	US
AS10886	University of Maryland	US

Upstreams

AS Number	Description	Country
AS19050	U.S. Department of Health & Human Services	US
AS10886	University of Maryland	US

Downstreams

AS Number	Description	Country
AS6150	National Cancer Institute	US

Legacy Routes

165.112.0.0/21 165.112.0.0/20