ASN AS18663 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18663?

AS18663 is listed under University of the Pacific.

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.

AS18663 University of the Pacific

ASN Lookup Tool

University of the Pacific pacific.edu

US 3 Routes

AS Data

AS18663

AS18663 – University of the Pacific

AS Number	18663
AS Name	UOP-AS
Organization	University of the Pacific(univer-95)
Country	US
Website	pacific.edu
Number of IPv4 Routes	3
Number of IPv6 Routes	0
ASN type	EDUCATION
Registry	ARIN
Date Allocated	2000-09-26

ASN Intelligence API for production workflows

Use ASN data for AS18663 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
138.9.0.0/16	AS18663	University of the Pacific	University of the Pacific	65536
138.9.2.0/23	AS18663	University of the Pacific	University of the Pacific	512
138.9.4.0/23	AS18663	University of the Pacific	University of the Pacific	512

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:       18663
ASName:         UOP-AS
ASHandle:       AS18663
RegDate:        2000-09-26
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/18663


OrgName:        University of the Pacific
OrgId:          UNIVER-95
Address:        3601 Pacific Ave.
City:           Stockton
StateProv:      CA
PostalCode:     95211
Country:        US
RegDate:        1990-01-17
Updated:        2025-03-20
Ref:            https://rdap.arin.net/registry/entity/UNIVER-95


OrgAbuseHandle: SYSTE837-ARIN
OrgAbuseName:   Systems
OrgAbusePhone:  +1-209-946-7461 
OrgAbuseEmail:  systems@lists.pacific.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SYSTE837-ARIN

OrgRoutingHandle: SYSTE837-ARIN
OrgRoutingName:   Systems
OrgRoutingPhone:  +1-209-946-7461 
OrgRoutingEmail:  systems@lists.pacific.edu
OrgRoutingRef:    https://rdap.arin.net/registry/entity/SYSTE837-ARIN

OrgTechHandle: DOUMA1-ARIN
OrgTechName:   Douma, Scott 
OrgTechPhone:  +1-209-946-2811 
OrgTechEmail:  sdouma@pacific.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/DOUMA1-ARIN

OrgDNSHandle: DNSAD303-ARIN
OrgDNSName:   dnsadmin
OrgDNSPhone:  +1-209-946-2251 
OrgDNSEmail:  dnsadmin@pacific.edu
OrgDNSRef:    https://rdap.arin.net/registry/entity/DNSAD303-ARIN

OrgNOCHandle: SUMAB-ARIN
OrgNOCName:   Sumabat, Christian 
OrgNOCPhone:  +1-209-946-2547 
OrgNOCEmail:  csumabat@pacific.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/SUMAB-ARIN

OrgTechHandle: DNSAD303-ARIN
OrgTechName:   dnsadmin
OrgTechPhone:  +1-209-946-2251 
OrgTechEmail:  dnsadmin@pacific.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/DNSAD303-ARIN

OrgTechHandle: SYSTE837-ARIN
OrgTechName:   Systems
OrgTechPhone:  +1-209-946-7461 
OrgTechEmail:  systems@lists.pacific.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/SYSTE837-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
AS33667	Comcast Cable Communications, LLC	US
AS33651	Comcast Cable Communications, LLC	US
AS3356	Level 3 Parent, LLC	US
AS16504	Granite Telecommunications LLC	US

Upstreams

AS Number	Description	Country
AS33667	Comcast Cable Communications, LLC	US
AS33651	Comcast Cable Communications, LLC	US
AS3356	Level 3 Parent, LLC	US
AS16504	Granite Telecommunications LLC	US