ASN AS30387 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS30387?

AS30387 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.

AS30387 National Institutes of Health

ASN Lookup Tool

National Institutes of Health mail.nih.gov

US 5 Routes

AS Data

AS30387

AS30387 – National Institutes of Health

AS Number	30387
AS Name	NIH-NET-NCCS
Organization	National Institutes of Health(nih)
Country	US
Website	mail.nih.gov
Number of IPv4 Routes	5
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2003-09-26

ASN Intelligence API for production workflows

Use ASN data for AS30387 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

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
156.40.53.0/24	AS30387	National Institutes of Health	National Institutes of Health	256
165.112.0.0/20	AS30387	National Institutes of Health	National Institutes of Health	4096
165.112.194.0/23	AS30387	National Institutes of Health	National Institutes of Health	512
156.40.98.0/23	AS30387	National Institutes of Health	National Institutes of Health	512
165.112.0.0/21	AS30387	National Institutes of Health	National Institutes of Health	2048

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:       30387
ASName:         NIH-NET-NCCS
ASHandle:       AS30387
RegDate:        2003-09-26
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/30387


OrgName:        National Institutes of Health
OrgId:          NIH
Address:        9000 Rockville Pike
Address:        MSC 4805
City:           Bethesda
StateProv:      MD
PostalCode:     20892-4805
Country:        US
RegDate:        
Updated:        2025-06-03
Ref:            https://rdap.arin.net/registry/entity/NIH


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

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

OrgDNSHandle: NIHTE-ARIN
OrgDNSName:   NIHtechs
OrgDNSPhone:  +1-301-402-3141 
OrgDNSEmail:  citnsarin@mail.nih.gov
OrgDNSRef:    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

Upstreams

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