129.100.200.0/23

AS823 · University of Western Ontario

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Summary

Country	Canada
Domain	uwo.ca
ASN	AS823
Parent Range	129.100.0.0/16
Registry	ARIN
ID	UWO-NET

WHOIS Details

NetHandle:      NET-129-100-0-0-1
OrgID:          UWO-Z
Parent:         NET-129-0-0-0-0
NetName:        UWO-NET
NetRange:       129.100.0.0 - 129.100.255.255
NetType:        allocation
RegDate:        1987-10-27
Updated:        2021-12-14
TechHandle:     NOC310-ARIN
AbuseHandle:    NAC96-ARIN
NOCHandle:      NOC310-ARIN
Source:         ARIN


OrgID:          UWO-Z
OrgName:        University of Western Ontario
CanAllocate:    
Street:         Western Technology Services
Street:         1393 Western Road
Street:         Rm SSB 4352
City:           London
State/Prov:     ON
Country:        CA
PostalCode:     N6G-1G9
RegDate:        2021-02-17
Updated:        2025-10-14
OrgAdminHandle: NOC310-ARIN
OrgTechHandle:  NOC310-ARIN
OrgAbuseHandle: NOC310-ARIN
Source:         ARIN


POCHandle:      NOC310-ARIN
IsRole:         Y
LastName:       Network Operations Centre
FirstName:      
Street:         Information Technology Services
Street:         1393 Western Road
Street:         Rm SSB 4352
City:           London
State/Prov:     ON
Country:        CA
PostalCode:     N6G-1G9
RegDate:        2003-02-04
Updated:        2025-10-14
OfficePhone:    +1-519-661-3525
Mailbox:        noc@uwo.ca
Source:         ARIN


POCHandle:      NAC96-ARIN
IsRole:         Y
LastName:       Network Abuse Contact
FirstName:      
Street:         Western Technology Services
Street:         1393 Western Road
Street:         Rm SSB 4352
City:           London
State/Prov:     ON
Country:        CA
PostalCode:     N6G-1G9
RegDate:        2014-02-28
Updated:        2025-05-01
OfficePhone:    +1-519-661-3525
Mailbox:        abuse@uwo.ca
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 129.100.200.0/23

Range	ASN	Company	Num of IPs
129.100.0.0/16	AS823	University of Western Ontario	65,536

Nearby Ranges

BGP prefixes that overlap with 129.100.0.0/16

Range	ASN	Company	Num of IPs
129.100.0.0/16	AS823	University of Western Ontario	65,536

Hosted domains

There are no domains currently hosted on this ASN.

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

Read more

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
44.253.224.231	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
54.202.108.103	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US
111.9.136.71	AS9808 China Mobile Communications Group Co., Ltd.	`8.15ms` from Chengdu, CN
34.133.15.215	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
14.177.96.215	AS45899 VNPT Corp	`1.35ms` from Hanoi, VN
20.108.13.151	AS8075 Microsoft Corporation	`0.17ms` from London, GB
62.209.122.39	AS2119 Telenor Norge AS	`11.05ms` from Oslo, NO
91.168.152.71	AS12322 Free SAS	`2.92ms` from Paris, FR
211.226.85.215	AS4766 Korea Telecom	`1.90ms` from Seoul, KR
169.211.31.151	AS4766 Korea Telecom	`1.55ms` from Seoul, KR
183.101.23.135	AS4766 Korea Telecom	`1.87ms` from Seoul, KR
120.107.185.55	AS1659 Taiwan Academic Network (TANet) Information Center	`2.60ms` from Taichung, TW
41.105.72.119	AS36947 Telecom Algeria	`13.60ms` from Valencia, ES
80.200.121.231	AS5432 Proximus NV	`5.17ms` from Amsterdam, NL
84.189.207.247	AS3320 Deutsche Telekom AG	`4.35ms` from Berlin, DE
67.166.51.183	AS7922 Comcast Cable Communications, LLC	`5.08ms` from Denver, US
79.205.81.7	AS3320 Deutsche Telekom AG	`1.41ms` from Frankfurt am Main, DE
183.240.181.183	AS56040 China Mobile communications corporation	`3.13ms` from Guangzhou, CN
64.59.106.103	AS27589 MOJOHOST	`0.13ms` from Miami, US
180.196.84.247	AS18126 Chubu Telecommunications Company, Inc.	`4.38ms` from Osaka, JP
170.163.103.231	AS10583 Connecticut Hospital Assoc.	`7.53ms` from Providence, US
98.208.105.151	AS7922 Comcast Cable Communications, LLC	`7.38ms` from San Jose, US
179.154.201.23	AS28573 Claro NXT Telecomunicacoes Ltda	`6.91ms` from Sao Paulo, BR
112.160.241.39	AS4766 Korea Telecom	`6.44ms` from Seoul, KR
1.253.186.247	AS9318 SK Broadband Co Ltd	`8.14ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f2 -m6 129.100.201.252

traceroute to 129.100.201.252 (129.100.201.252): 6 hops max, 52 byte packets

2 [AS47447] 212.83.33.9 0.256 ms

3 [AS47447] 62.113.192.89 0.306 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Frankfurt am Main, DE

On November 14th 2025

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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