ASN AS131 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS131?

AS131 is listed under University of California, Santa Barbara.

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.

AS131 University of California, Santa Barbara

ASN Lookup Tool

University of California, Santa Barbara ucsb.edu

US 6 Routes

AS Data

AS131

AS131 – University of California, Santa Barbara

AS Number	131
AS Name	UCSB-NET-AS
Organization	University of California, Santa Barbara(ucsb-z)
Country	US
Website	ucsb.edu
Number of IPv4 Routes	5
Number of IPv6 Routes	1
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1987-09-30

ASN Intelligence API for production workflows

Use ASN data for AS131 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
128.111.0.0/16	AS131	University of California, Santa Barbara	University of California, Santa Barbara	65536
199.120.153.0/24	AS131	University of California, Santa Barbara	University of California, Santa Barbara	256
192.35.222.0/24	AS131	University of California, Santa Barbara	University of California, Santa Barbara	256
2607:f378::/32	AS131	University of California, Santa Barbara	University of California, Santa Barbara	~79×10²⁷
192.150.216.0/23	AS131	University of California, Santa Barbara	University of California, Santa Barbara	512
169.231.0.0/16	AS131	University of California, Santa Barbara	University of California, Santa Barbara	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:       131
ASName:         UCSB-NET-AS
ASHandle:       AS131
RegDate:        1987-09-30
Updated:        2024-04-26    
Ref:            https://rdap.arin.net/registry/autnum/131


OrgName:        University of California, Santa Barbara
OrgId:          UCSB-Z
Address:        Office of Information Technology
Address:        North Hall 2124
City:           Santa Barbara
StateProv:      CA
PostalCode:     93106-3201
Country:        US
RegDate:        2023-03-18
Updated:        2023-03-18
Ref:            https://rdap.arin.net/registry/entity/UCSB-Z


OrgAbuseHandle: NETWO4536-ARIN
OrgAbuseName:   Network Security
OrgAbusePhone:  +1-805-893-5080 
OrgAbuseEmail:  security@ucsb.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO4536-ARIN

OrgTechHandle: KS1217-ARIN
OrgTechName:   Schmidt, Kevin 
OrgTechPhone:  +1-805-893-7779 
OrgTechEmail:  kps@ucsb.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/KS1217-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
AS2153	CENIC	US
AS2152	CENIC	US

Upstreams

AS Number	Description	Country
AS2153	CENIC	US
AS2152	CENIC	US