ASN AS19050 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS19050?

AS19050 is listed under U.S. Department of Health & Human Services.

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.

AS19050 U.S. Department of Health & Human Services

ASN Lookup Tool

U.S. Department of Health & Human Services mail.nih.gov

US 13 Routes

AS Data

AS19050

AS19050 – U.S. Department of Health & Human Services

AS Number	19050
AS Name	TIC-DHHS-INTERIOR
Organization	U.S. Department of Health & Human Services(udhhs-4)
Country	US
Website	mail.nih.gov
Number of IPv4 Routes	10
Number of IPv6 Routes	3
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2012-10-03

ASN Intelligence API for production workflows

Use ASN data for AS19050 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2607:f220:f1::/48	AS19050	U.S. Department of Health & Human Services	U.S. Dept. of Health and Human Services	~1×10²⁴
158.73.196.0/24	AS19050	U.S. Department of Health & Human Services	U.S. Dept. of Health and Human Services	256
198.179.4.0/24	AS19050	U.S. Department of Health & Human Services	U.S. Dept. of Health and Human Services	256
156.40.95.0/24	AS19050	U.S. Department of Health & Human Services	U.S. Department of Health & Human Services	256
156.40.93.0/24	AS19050	U.S. Department of Health & Human Services	U.S. Department of Health & Human Services	256
158.73.0.0/16	AS19050	U.S. Department of Health & Human Services	U.S. Dept. of Health and Human Services	65536
2607:f220:200::/44	AS19050	U.S. Department of Health & Human Services	Centers for Medicare & Medicaid Services	~19×10²⁴
158.71.224.0/24	AS19050	U.S. Department of Health & Human Services	U.S. Dept. of Health and Human Services	256
156.40.94.0/24	AS19050	U.S. Department of Health & Human Services	U.S. Department of Health & Human Services	256
156.40.197.0/24	AS19050	U.S. Department of Health & Human Services	U.S. Department of Health & Human Services	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:       19050
ASName:         TIC-DHHS-INTERIOR
ASHandle:       AS19050
RegDate:        2012-10-03
Updated:        2012-10-03
Comment:        U.S. Department of Health and Human Services    
Ref:            https://rdap.arin.net/registry/autnum/19050


OrgName:        U.S. Department of Health & Human Services
OrgId:          UDHHS-4
Address:        200 Independence Avenue, S.W.
City:           Washington
StateProv:      DC
PostalCode:     20201
Country:        US
RegDate:        2012-01-17
Updated:        2025-06-05
Ref:            https://rdap.arin.net/registry/entity/UDHHS-4


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

OrgTechHandle: NIHTE-ARIN
OrgTechName:   NIHtechs
OrgTechPhone:  +1-301-402-3141 
OrgTechEmail:  citnsarin@mail.nih.gov
OrgTechRef:    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: NIHAD-ARIN
OrgAbuseName:   NIHadm
OrgAbusePhone:  +1-301-402-3141 
OrgAbuseEmail:  citnsarin@mail.nih.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NIHAD-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
AS3527	National Institutes of Health	US
AS22828	United States Food and Drug Administration	US
AS13611	U.S. Center For Disease Control and Prevention	US
AS70	National Library of Medicine	US
AS30387	National Institutes of Health	US
AS5766	Indian Health Service	US
AS15029	U.S. Department of Health & Human Services	US
AS26810	U.S. Dept. of Health and Human Services	US

Upstreams

AS Number	Description	Country
AS15029	U.S. Department of Health & Human Services	US

Downstreams

AS Number	Description	Country
AS3527	National Institutes of Health	US
AS22828	United States Food and Drug Administration	US
AS13611	U.S. Center For Disease Control and Prevention	US
AS70	National Library of Medicine	US
AS30387	National Institutes of Health	US
AS5766	Indian Health Service	US
AS26810	U.S. Dept. of Health and Human Services	US