AS73 - WASHINGTON-AS - University of Washington, US

United States
AS Number
AS73
AS Name
WASHINGTON-AS
Org Name
University of Washington
Country / Region
United States
Registry

arin

RegDate

2020-05-20

Updated

2026-06-15

AS73 Looking Glass
http://www.pnwgp.net/technical-info/looking-glass/
IPv4Prefixes

10

IPv6Prefixes

1

IPv4 NUMs

239,104

IPv6 NUMs(/64)

4,294,967,296

CIDR Description IP Num
69.91.192.0/18
IRR Valid
University of Washington 16384
108.179.140.0/22
IRR Valid
University of Washington 1024
128.95.0.0/16
IRR Valid
University of Washington 65536
128.208.0.0/16
IRR Valid
University of Washington 65536
140.142.0.0/16
IRR Valid
University of Washington 65536
173.250.160.0/19
IRR Valid
University of Washington 8192
192.26.136.0/24
IRR Valid
University of Washington 256
192.42.144.0/24
IRR Valid
University of Washington 256
198.48.64.0/19
IRR Valid
University of Washington 8192
205.175.96.0/19
IRR Valid
University of Washington 8192
CIDR Description IP NUMs(prefix /64)
2607:4000::/32
IRR Valid
University of Washington 4294967296
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS101 WASH-NSF-AS - University of Washington, US United States 8,448 4,295,032,832 IPv4 IPv4 IPv6 IPv6
AS1 LVLT-1 - Level 3 Parent, LLC, US United States 6,912 4,294,967,296 IPv6 IPv6
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS64247 UW-RESEARCH - University of Washington, US United States 1,024 16,777,216 IPv4 IPv4 
ASNumber:       73
ASName:         WASHINGTON-AS
ASHandle:       AS73
RegDate:        1986-05-05
Updated:        2021-10-01
Ref:            https://rdap.arin.net/registry/autnum/73

OrgID:          UWND-Z
OrgName:        University of Washington
CanAllocate:    
Street:         4545 15th Ave NE
City:           Seattle
State/Prov:     WA
Country:        US
PostalCode:     98105
RegDate:        2020-05-20
Updated:        2026-06-15
OrgAdminHandle  UW-NOC-ARIN
OrgTechHandle   UW-NOC-ARIN
OrgAbuseHandle  UWSO-ARIN
OrgNOCHandle    UW-NOC-ARIN
Source:         ARIN

OrgAdminHandleHandle:  UW-NOC-ARIN
OrgAdminHandleName:    University of Washington Networks and Distributed, 
OrgAdminHandlePhone:   +1-206-221-6000
OrgAdminHandleEmail:   [email protected]
OrgAdminHandleRef:     https://rdap.arin.net/registry/entity/UW-NOC-ARIN

OrgTechHandleHandle:  UW-NOC-ARIN
OrgTechHandleName:    University of Washington Networks and Distributed, 
OrgTechHandlePhone:   +1-206-221-6000
OrgTechHandleEmail:   [email protected]
OrgTechHandleRef:     https://rdap.arin.net/registry/entity/UW-NOC-ARIN

OrgAbuseHandleHandle:  UWSO-ARIN
OrgAbuseHandleName:    University of Washington Security Operations, 
OrgAbuseHandlePhone:   +1-206-221-7000
OrgAbuseHandleEmail:   [email protected]
OrgAbuseHandleRef:     https://rdap.arin.net/registry/entity/UWSO-ARIN

OrgNOCHandleHandle:  UW-NOC-ARIN
OrgNOCHandleName:    University of Washington Networks and Distributed, 
OrgNOCHandlePhone:   +1-206-221-6000
OrgNOCHandleEmail:   [email protected]
OrgNOCHandleRef:     https://rdap.arin.net/registry/entity/UW-NOC-ARIN

RTechHandleHandle:  UW-NOC-ARIN
RTechHandleName:    University of Washington Networks and Distributed, 
RTechHandlePhone:   +1-206-221-6000
RTechHandleEmail:   [email protected]
RTechHandleRef:     https://rdap.arin.net/registry/entity/UW-NOC-ARIN