ASN AS5661 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS5661?

AS5661 is listed under UNIVERSITY OF SOUTH FLORIDA.

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.

AS5661 UNIVERSITY OF SOUTH FLORIDA

ASN Lookup Tool

UNIVERSITY OF SOUTH FLORIDA usf.edu

US 2 Routes

AS Data

AS5661

AS5661 – UNIVERSITY OF SOUTH FLORIDA

AS Number	5661
AS Name	USF
Organization	UNIVERSITY OF SOUTH FLORIDA(usf-z)
Country	US
Website	usf.edu
Number of IPv4 Routes	1
Number of IPv6 Routes	1
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1995-07-23

ASN Intelligence API for production workflows

Use ASN data for AS5661 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2607:fe50::/32	AS5661	UNIVERSITY OF SOUTH FLORIDA	University of South Florida Board of Trustees, a public body corporate	~79×10²⁷
131.247.0.0/16	AS5661	UNIVERSITY OF SOUTH FLORIDA	UNIVERSITY OF SOUTH FLORIDA	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:       5661
ASName:         USF
ASHandle:       AS5661
RegDate:        1995-07-23
Updated:        2022-04-26    
Ref:            https://rdap.arin.net/registry/autnum/5661


OrgName:        UNIVERSITY OF SOUTH FLORIDA
OrgId:          USF-Z
Address:        4202 E Fowler Ave.
City:           Tampa
StateProv:      FL
PostalCode:     33620
Country:        US
RegDate:        2010-06-02
Updated:        2024-04-19
Ref:            https://rdap.arin.net/registry/entity/USF-Z


OrgRoutingHandle: HESSS7-ARIN
OrgRoutingName:   Hess, Steve 
OrgRoutingPhone:  +1-813-396-0881 
OrgRoutingEmail:  hess208@usf.edu
OrgRoutingRef:    https://rdap.arin.net/registry/entity/HESSS7-ARIN

OrgAbuseHandle: HESSS7-ARIN
OrgAbuseName:   Hess, Steve 
OrgAbusePhone:  +1-813-396-0881 
OrgAbuseEmail:  hess208@usf.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/HESSS7-ARIN

OrgDNSHandle: ERICA10-ARIN
OrgDNSName:   Stewart, Eric A.
OrgDNSPhone:  +1-813-974-6084 
OrgDNSEmail:  eric@usf.edu
OrgDNSRef:    https://rdap.arin.net/registry/entity/ERICA10-ARIN

OrgTechHandle: ERICA10-ARIN
OrgTechName:   Stewart, Eric A.
OrgTechPhone:  +1-813-974-6084 
OrgTechEmail:  eric@usf.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/ERICA10-ARIN

OrgNOCHandle: HESSS7-ARIN
OrgNOCName:   Hess, Steve 
OrgNOCPhone:  +1-813-396-0881 
OrgNOCEmail:  hess208@usf.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/HESSS7-ARIN

OrgAbuseHandle: SECUR180-ARIN
OrgAbuseName:   Security
OrgAbusePhone:  +1-813-974-9152 
OrgAbuseEmail:  security@usf.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SECUR180-ARIN

OrgTechHandle: HESSS7-ARIN
OrgTechName:   Hess, Steve 
OrgTechPhone:  +1-813-396-0881 
OrgTechEmail:  hess208@usf.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/HESSS7-ARIN

OrgRoutingHandle: ERICA10-ARIN
OrgRoutingName:   Stewart, Eric A.
OrgRoutingPhone:  +1-813-974-6084 
OrgRoutingEmail:  eric@usf.edu
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ERICA10-ARIN

OrgDNSHandle: HESSS7-ARIN
OrgDNSName:   Hess, Steve 
OrgDNSPhone:  +1-813-396-0881 
OrgDNSEmail:  hess208@usf.edu
OrgDNSRef:    https://rdap.arin.net/registry/entity/HESSS7-ARIN

OrgNOCHandle: NOC3030-ARIN
OrgNOCName:   Network Operations Center
OrgNOCPhone:  +1-813-974-8100 
OrgNOCEmail:  noc@usf.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC3030-ARIN

OrgAbuseHandle: RAYMO98-ARIN
OrgAbuseName:   Raymond, Turia 
OrgAbusePhone:  +1-813-974-9505 
OrgAbuseEmail:  turia@usf.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/RAYMO98-ARIN

RTechHandle: ERICA10-ARIN
RTechName:   Stewart, Eric A.
RTechPhone:  +1-813-974-6084 
RTechEmail:  eric@usf.edu
RTechRef:    https://rdap.arin.net/registry/entity/ERICA10-ARIN

RNOCHandle: NOC3030-ARIN
RNOCName:   Network Operations Center
RNOCPhone:  +1-813-974-8100 
RNOCEmail:  noc@usf.edu
RNOCRef:    https://rdap.arin.net/registry/entity/NOC3030-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
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS6939	Hurricane Electric LLC	US
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US
AS11096	FloridaNet	US

Upstreams

AS Number	Description	Country
AS6939	Hurricane Electric LLC	US
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US
AS11096	FloridaNet	US