ASN AS3671 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS3671?

AS3671 is listed under SLAC National Accelerator Laboratory.

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.

AS3671 SLAC National Accelerator Laboratory

ASN Lookup Tool

SLAC National Accelerator Laboratory slac.stanford.edu

US 3 Routes

AS Data

AS3671

AS3671 – SLAC National Accelerator Laboratory

AS Number	3671
AS Name	SLAC
Organization	SLAC National Accelerator Laboratory(thele-44-z)
Country	US
Website	slac.stanford.edu
Number of IPv4 Routes	2
Number of IPv6 Routes	1
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1994-06-10

ASN Intelligence API for production workflows

Use ASN data for AS3671 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
2620:114:d000::/44	AS3671	SLAC National Accelerator Laboratory	SLAC National Accelerator Laboratory	~19×10²⁴
198.51.111.0/24	AS3671	SLAC National Accelerator Laboratory	SLAC National Accelerator Laboratory	256
134.79.0.0/16	AS3671	SLAC National Accelerator Laboratory	SLAC National Accelerator Laboratory	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:       3671
ASName:         SLAC
ASHandle:       AS3671
RegDate:        1994-06-10
Updated:        2012-04-02    
Ref:            https://rdap.arin.net/registry/autnum/3671


OrgName:        SLAC National Accelerator Laboratory
OrgId:          THELE-44-Z
Address:        2575 Sand Hill Rd.
Address:        M/S 97
City:           Menlo Park
StateProv:      CA
PostalCode:     94025
Country:        US
RegDate:        2009-12-04
Updated:        2020-12-11
Comment:        http://www.slac.stanford.edu/
Ref:            https://rdap.arin.net/registry/entity/THELE-44-Z


OrgNOCHandle: NOC1602-ARIN
OrgNOCName:   Network Operations Center
OrgNOCPhone:  +1-650-926-6200 
OrgNOCEmail:  noc@slac.stanford.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC1602-ARIN

OrgTechHandle: NEG1-ARIN
OrgTechName:   Network Engineering Group
OrgTechPhone:  +1-650-926-6200 
OrgTechEmail:  cd-neteng@slac.stanford.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/NEG1-ARIN

OrgAbuseHandle: ITSEC40-ARIN
OrgAbuseName:   IT Security
OrgAbusePhone:  +1-650-926-2530 
OrgAbuseEmail:  security@slac.stanford.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ITSEC40-ARIN

OrgAbuseHandle: NETWO596-ARIN
OrgAbuseName:   Network Abuse
OrgAbusePhone:  +1-650-926-5000 
OrgAbuseEmail:  abuse@slac.stanford.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO596-ARIN

OrgTechHandle: FOSTE349-ARIN
OrgTechName:   Foster, Mark 
OrgTechPhone:  +1-650-926-3630 
OrgTechEmail:  mark.foster@slac.stanford.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/FOSTE349-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
AS293	ESnet	US
AS46749	Stanford University	US

Upstreams

AS Number	Description	Country
AS293	ESnet	US
AS46749	Stanford University	US

Contacts

Email Contacts

security@slac.stanford.edu mark.foster@slac.stanford.edu cd-neteng@slac.stanford.edu

Abuse Contacts

abuse@slac.stanford.edu