72.233.128.0/17

AS10430 · Washington State K-20 Telecommunications Network

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Summary

Country	United States
Domain	uw.edu
ASN	AS10430
Registry	ARIN
ID	WA-K20-BLK9

WHOIS Details

NetHandle:      NET-72-233-128-0-1
OrgID:          WSKT
Parent:         NET-72-0-0-0-0
NetName:        WA-K20-BLK9
NetRange:       72.233.128.0 - 72.233.255.255
NetType:        allocation
RegDate:        2008-03-24
Updated:        2008-04-10
TechHandle:     UW-NOC-ARIN
Source:         ARIN


OrgID:          WSKT
OrgName:        Washington State K-20 Telecommunications Network
CanAllocate:    
Street:         c/o University of Washington IT
Street:         BOX 354842
Street:         4545 15th Avenue NE
City:           Seattle
State/Prov:     WA
Country:        US
PostalCode:     98105-4527
RegDate:        1997-08-01
Updated:        2024-11-25
OrgAdminHandle: UW-NOC-ARIN
OrgTechHandle:  UW-NOC-ARIN
OrgAbuseHandle: UW-NOC-ARIN
OrgNOCHandle:   UW-NOC-ARIN
Source:         ARIN


POCHandle:      UW-NOC-ARIN
IsRole:         Y
LastName:       University of Washington Networks and Distributed
FirstName:      
Street:         4545 15th Avenue NE,  354841
City:           Seattle
State/Prov:     WA
Country:        US
PostalCode:     98105-4527
RegDate:        1970-01-01
Updated:        2025-12-17
OfficePhone:    +1-206-221-6000
Mailbox:        [email protected]
Source:         ARIN

Overlapping Ranges

BGP prefixes that are contained by 72.233.128.0/17

Range	ASN	Company	Num of IPs
72.233.192.0/18	AS394391	Central Washington University	16,384
72.233.128.0/18	AS54032	Seattle Pacific University	16,384

Nearby Ranges

BGP prefixes that overlap with 72.233.0.0/16

Range	ASN	Company	Num of IPs
72.233.192.0/18	AS394391	Central Washington University	16,384
72.233.128.0/18	AS54032	Seattle Pacific University	16,384

Hosted domains

There are 3 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

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Pingable IPs

155 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
72.233.149.66	AS54032 Seattle Pacific University	`0.88ms` from Seattle, US
72.233.192.40	AS394391 Central Washington University	`3.60ms` from Seattle, US
72.233.153.172	AS54032 Seattle Pacific University	`0.48ms` from Seattle, US
72.233.151.130	AS54032 Seattle Pacific University	`0.70ms` from Seattle, US
72.233.255.12	AS394391 Central Washington University	`3.17ms` from Seattle, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
83.85.206.1	AS33915 Vodafone Libertel B.V.	`1.78ms` from Amsterdam, NL
94.209.66.1	AS33915 Vodafone Libertel B.V.	`5.31ms` from Amsterdam, NL
40.131.110.209	AS7029 Windstream Communications LLC	`0.33ms` from Ashburn, US
62.1.36.81	AS1241 Forthnet	`0.44ms` from Athens, GR
12.229.30.209	AS7018 AT&T Enterprises, LLC	`13.12ms` from Atlanta, US
173.188.246.113	AS7029 Windstream Communications LLC	`5.79ms` from Atlanta, US
44.232.118.161	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, US
190.27.202.1	AS19429 ETB - Colombia	`0.88ms` from Bogotá, CO
24.116.144.1	AS11492 CABLE ONE, INC.	`13.32ms` from Chicago, US
75.129.105.1	AS20115 Charter Communications LLC	`11.48ms` from Chicago, US
12.3.74.81	AS7018 AT&T Enterprises, LLC	`7.16ms` from Chicago, US
219.152.236.33	AS134420 Chongqing Telecom	`0.34ms` from Chongqing, CN
200.250.136.209	AS4230 CLARO S.A.	`10.27ms` from Curitiba, BR
206.248.50.1	AS17306 JAB Wireless, INC.	`2.09ms` from Dallas, US
70.174.249.97	AS22773 Cox Communications Inc.	`12.14ms` from Dallas, US
142.79.118.1	AS53508 Cablelynx	`3.44ms` from Dallas, US
50.229.248.193	AS7922 Comcast Cable Communications, LLC	`0.70ms` from Dallas, US
86.45.88.1	AS5466 Eircom Limited	`0.94ms` from Dublin, IE
87.190.49.49	AS3320 Deutsche Telekom AG	`1.53ms` from Duesseldorf, DE
84.159.179.33	AS3320 Deutsche Telekom AG	`10.91ms` from Frankfurt am Main, DE
178.82.54.1	AS6730 Sunrise GmbH	`1.15ms` from Geneve, CH
187.133.220.225	AS8151 UNINET	`11.43ms` from Guadalajara, MX
189.163.23.145	AS8151 UNINET	`0.98ms` from Guadalajara, MX
193.189.247.1	AS6805 Telefonica Germany GmbH & Co.OHG	`3.85ms` from Hamburg, DE
47.56.51.1	AS45102 Alibaba (US) Technology Co., Ltd.	`0.85ms` from Hong Kong, HK

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f2 -m9 72.233.191.205

traceroute to 72.233.191.205 (72.233.191.205): 9 hops max, 52 byte packets

2 [AS20278] 64.44.164.129 12.293 ms

3 *

4 *

5 *

6 [AS174] 154.54.40.110 13.833 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Jacksonville, US

On January 30th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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