ASN AS102 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS102?

AS102 is listed under U.S. National Science Foundation.

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.

AS102 U.S. National Science Foundation

ASN Lookup Tool

U.S. National Science Foundation nsf.gov

US 6 Routes

AS Data

AS102

AS102 – U.S. National Science Foundation

AS Number	102
AS Name	NSF-HQ-AS
Organization	U.S. National Science Foundation(nsf)
Country	US
Website	nsf.gov
Number of IPv4 Routes	3
Number of IPv6 Routes	3
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	1987-03-31

ASN Intelligence API for production workflows

Use ASN data for AS102 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
198.181.231.0/24	AS102	U.S. National Science Foundation	U.S. National Science Foundation	256
2001:428:9002:f806::/64	AS102	U.S. National Science Foundation	CenturyLink Communications, LLC	~18×10¹⁸
2620:10f:6000::/40	AS102	U.S. National Science Foundation	U.S. National Science Foundation	~309×10²⁴
128.150.0.0/16	AS102	U.S. National Science Foundation	U.S. National Science Foundation	65536
2001:428:2500:1c::/64	AS102	U.S. National Science Foundation	CenturyLink Communications, LLC	~18×10¹⁸
192.12.209.0/24	AS102	U.S. National Science Foundation	U.S. National Science Foundation	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:       102
ASName:         NSF-HQ-AS
ASHandle:       AS102
RegDate:        1987-03-31
Updated:        2025-02-11    
Ref:            https://rdap.arin.net/registry/autnum/102


OrgName:        U.S. National Science Foundation
OrgId:          NSF
Address:        2415 Eisenhower Avenue
City:           Alexandria
StateProv:      VA
PostalCode:     22314
Country:        US
RegDate:        
Updated:        2025-05-22
Ref:            https://rdap.arin.net/registry/entity/NSF


OrgAbuseHandle: BEVER25-ARIN
OrgAbuseName:   Beverstock, David 
OrgAbusePhone:  +1-571-296-5657 
OrgAbuseEmail:  dbeverst@nsf.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/BEVER25-ARIN

OrgAbuseHandle: NSFAB-ARIN
OrgAbuseName:   NSF Abuse
OrgAbusePhone:  +1-703-292-5050 
OrgAbuseEmail:  arin-abuse@nsf.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NSFAB-ARIN

OrgNOCHandle: ORGOW-ARIN
OrgNOCName:   Org-Owner
OrgNOCPhone:  +1-703-292-4223 
OrgNOCEmail:  ccoyne@nsf.gov
OrgNOCRef:    https://rdap.arin.net/registry/entity/ORGOW-ARIN

OrgDNSHandle: ORGOW-ARIN
OrgDNSName:   Org-Owner
OrgDNSPhone:  +1-703-292-4223 
OrgDNSEmail:  ccoyne@nsf.gov
OrgDNSRef:    https://rdap.arin.net/registry/entity/ORGOW-ARIN

OrgAbuseHandle: ORGOW-ARIN
OrgAbuseName:   Org-Owner
OrgAbusePhone:  +1-703-292-4223 
OrgAbuseEmail:  ccoyne@nsf.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ORGOW-ARIN

OrgTechHandle: ORGOW-ARIN
OrgTechName:   Org-Owner
OrgTechPhone:  +1-703-292-4223 
OrgTechEmail:  ccoyne@nsf.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/ORGOW-ARIN

OrgTechHandle: BEVER25-ARIN
OrgTechName:   Beverstock, David 
OrgTechPhone:  +1-703-292-4563 
OrgTechEmail:  dbeverst@nsf.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/BEVER25-ARIN

OrgNOCHandle: NSFNO-ARIN
OrgNOCName:   NSF NOC
OrgNOCPhone:  +1-703-292-5050 
OrgNOCEmail:  arin-noc@nsf.gov
OrgNOCRef:    https://rdap.arin.net/registry/entity/NSFNO-ARIN

OrgRoutingHandle: ORGOW-ARIN
OrgRoutingName:   Org-Owner
OrgRoutingPhone:  +1-703-292-4223 
OrgRoutingEmail:  ccoyne@nsf.gov
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ORGOW-ARIN

OrgNOCHandle: BEVER25-ARIN
OrgNOCName:   Beverstock, David 
OrgNOCPhone:  +1-703-292-4563 
OrgNOCEmail:  dbeverst@nsf.gov
OrgNOCRef:    https://rdap.arin.net/registry/entity/BEVER25-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
AS6223	CenturyLink Communications, LLC	US

Upstreams

AS Number	Description	Country
AS6223	CenturyLink Communications, LLC	US

Contacts

Email Contacts

ccoyne@nsf.gov dbeverst@nsf.gov

Abuse Contacts

arin-abuse@nsf.gov