ASN AS49 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS49?

AS49 is listed under National Institute of Standards and Technology.

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.

AS49 National Institute of Standards and Technology

ASN Lookup Tool

National Institute of Standards and Technology nist.gov

US 35 Routes

AS Data

AS49

AS49 – National Institute of Standards and Technology

AS Number	49
AS Name	US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY
Organization	National Institute of Standards and Technology(nist-z)
Country	US
Website	nist.gov
Number of IPv4 Routes	28
Number of IPv6 Routes	7
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	1985-09-04

ASN Intelligence API for production workflows

Use ASN data for AS49 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
129.6.128.0/17	AS49	National Institute of Standards and Technology	National Institute of Standards and Technology	32768
2610:20:6fce::/48	AS49	National Institute of Standards and Technology	National Institute of Standards and Technology	~1×10²⁴
2610:20:6fcf::/48	AS49	National Institute of Standards and Technology	National Institute of Standards and Technology	~1×10²⁴
129.6.96.0/20	AS49	National Institute of Standards and Technology	National Institute of Standards and Technology	4096
129.6.14.0/24	AS49	National Institute of Standards and Technology	National Institute of Standards and Technology	256
129.6.16.0/21	AS49	National Institute of Standards and Technology	National Institute of Standards and Technology	2048
129.6.50.0/24	AS49	National Institute of Standards and Technology	National Institute of Standards and Technology	256
129.6.24.0/22	AS49	National Institute of Standards and Technology	National Institute of Standards and Technology	1024
129.6.48.0/23	AS49	National Institute of Standards and Technology	National Institute of Standards and Technology	512
2610:20:6000::/37	AS49	National Institute of Standards and Technology	National Institute of Standards and Technology	~2×10²⁷

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:       49
ASName:         US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY
ASHandle:       AS49
RegDate:        1985-09-04
Updated:        2024-09-11    
Ref:            https://rdap.arin.net/registry/autnum/49


OrgName:        National Institute of Standards and Technology
OrgId:          NIST-Z
Address:        100 Bureau Drive Stop 1810
City:           Gaithersburg
StateProv:      MD
PostalCode:     20899
Country:        US
RegDate:        2024-09-05
Updated:        2024-09-19
Ref:            https://rdap.arin.net/registry/entity/NIST-Z


OrgAbuseHandle: NETWO8138-ARIN
OrgAbuseName:   Network Operations
OrgAbusePhone:  +1-301-975-3000 
OrgAbuseEmail:  netops@nist.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO8138-ARIN

OrgTechHandle: NETWO8138-ARIN
OrgTechName:   Network Operations
OrgTechPhone:  +1-301-975-3000 
OrgTechEmail:  netops@nist.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO8138-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
AS13335	Cloudflare, Inc.	US
AS3477	National Oceanic and Atmospheric Administration	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS13335	Cloudflare, Inc.	US
AS3477	National Oceanic and Atmospheric Administration	US
AS3356	Level 3 Parent, LLC	US