1. All IP Ranges
  2. 138.0.0.0/8
  3. 138.51.0.0/16
  4. AS239  | 138.51.0.0/16

138.51.0.0/16

AS239  ·  University of Toronto

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Summary

Country Canada
Domain utoronto.ca
ASN AS239
Registry ARIN
ID CA-NET

WHOIS Details

NetHandle:      NET-138-51-0-0-1
OrgID:          UNIVER-36
Parent:         NET-138-0-0-0-0
NetName:        CA-NET
NetRange:       138.51.0.0 - 138.51.255.255
NetType:        allocation
RegDate:        1990-02-06
Updated:        2021-12-14
TechHandle:     NSTEC-ARIN
Source:         ARIN


OrgID:          UNIVER-36
OrgName:        University of Toronto
CanAllocate:    
Street:         Information & Technology Services
Street:         4 Bancroft Avenue
Street:         ROOM 101C
City:           TORONTO
State/Prov:     ON
Country:        CA
PostalCode:     M5S 1C1
RegDate:        1988-09-20
Updated:        2025-10-20
OrgAdminHandle: DCA264-ARIN
OrgTechHandle:  NSTEC-ARIN
OrgTechHandle:  RS2206-ARIN
OrgAbuseHandle: NSTEC-ARIN
OrgAbuseHandle: RS2206-ARIN
OrgNOCHandle:   DCA264-ARIN
Source:         ARIN


POCHandle:      RS2206-ARIN
IsRole:         N
LastName:       Sutherland
FirstName:      Russell
Street:         4 Bancroft Avenue
Street:         Room 102
City:           Toronto
State/Prov:     ON
Country:        CA
PostalCode:     M5S 1C1
RegDate:        1996-05-02
Updated:        2025-10-09
OfficePhone:    +1-416-978-0470
MobilePhone:    +1-416-803-0080
FaxPhone:       +1-416-978-6620
Mailbox:        russell.sutherland@utoronto.ca
Source:         ARIN


POCHandle:      NSTEC-ARIN
IsRole:         Y
LastName:       NS-TECH
FirstName:      
Street:         Information & Technology Services
Street:         4 Bancroft Avenue, Room 102
City:           Toronto
State/Prov:     ON
Country:        CA
PostalCode:     M5S 1C1
RegDate:        2002-09-19
Updated:        2025-10-09
OfficePhone:    +1-416-978-4621
MobilePhone:    +1-416-803-0080
FaxPhone:       +1-416-978-6620
Mailbox:        eis.net.eng@utoronto.ca
Source:         ARIN


POCHandle:      DCA264-ARIN
IsRole:         N
LastName:       Carson
FirstName:      Douglas
Street:         4 Bancroft Avenue, #121B
City:           Toronto
State/Prov:     ON
Country:        CA
PostalCode:     M5S-1C1
RegDate:        2009-06-02
Updated:        2024-10-22
OfficePhone:    +1-416-978-3855
MobilePhone:    +1-416-879-3684
FaxPhone:       +1-416-978-6620
Mailbox:        doug.carson@utoronto.ca
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 138.0.0.0/8

Range ASN Company Num of IPs
138.101.0.0/16 AS9593 Nikkei Inc. 65,536
138.192.0.0/16 AS21727 Hamline University 65,536
138.78.0.0/16 AS396087 St. Mary's College of Maryland 65,536
138.14.0.0/16 AS8434 Saab AB 65,536
138.64.0.0/16 AS4685 ASAHI Net,Inc. 65,536
138.110.0.0/16 AS396128 Mount Holyoke College 65,536
138.6.0.0/16 AS38956 Uppsala local government 65,536
138.26.0.0/16 AS3452 University of Alabama at Birmingham - University Computer Center 65,536
138.62.0.0/16 AS25400 Norwegian State Railways 65,536
138.123.0.0/16 AS46887 Delaware Technical Community College 65,536
138.210.0.0/16 AS2379 CenturyLink Communications, LLC 65,536
138.210.0.0/16 AS22561 CenturyLink Communications, LLC 65,536
138.115.0.0/16 AS270 National Aeronautics and Space Administration 65,536
138.243.0.0/16 AS23779 NTT Communications Corporation 65,536
138.86.0.0/16 AS15295 University of Northern Colorado 65,536
138.237.0.0/16 AS18791 Texas Christian University 65,536
138.15.0.0/16 AS10753 NEC Laboratories America, Inc. 65,536
138.116.0.0/16 AS33004 SUNY Empire State University 65,536
138.236.0.0/16 AS17234 Gustavus Adolphus College 65,536
138.66.0.0/16 AS20981 Prov. Casamassima Km.3 65,536
138.201.0.0/16 AS24940 Server Block 65,536
138.50.0.0/16 AS367 Headquarters, USAISC 65,536
138.216.0.0/16 AS214692 Tuve-palvelut 65,536
138.102.0.0/16 AS2200 INRAE 65,536
138.210.0.0/16 AS22186 CenturyLink Communications, LLC 65,536
138.195.0.0/16 AS2200 CENTRALESUPELEC 65,536
138.220.0.0/16 AS10497 IBRD 65,536
138.9.0.0/16 AS18663 University of the Pacific 65,536
138.22.0.0/16 AS1853 GeoSphere Austria 65,536
138.29.0.0/16 AS22742 Coast Guard Academy 65,536
138.210.0.0/16 AS11398 CenturyLink Communications, LLC 65,536
138.210.0.0/16 AS14921 CenturyLink Communications, LLC 65,536
138.130.0.0/16 AS1221 Telstra Limited 65,536
138.217.0.0/16 AS1221 Telstra Limited 65,536
138.189.0.0/16 AS12511 Post CH AG 65,536
138.191.0.0/16 AS12511 Post CH AG 65,536
138.246.0.0/16 AS12816 Ludwig-Maximilians-Universitaet Muenchen 65,536
138.106.0.0/16 AS202116 SCANIA CV AB 65,536
138.92.0.0/16 AS11482 Canisius College 65,536
138.41.0.0/16 AS137 DIR-GARR - Roma 65,536
138.27.0.0/16 AS1540 Headquarters, USAISC 65,536
138.210.0.0/16 AS209 CenturyLink Communications, LLC 65,536
138.63.0.0/16 AS1715 Centre Europeen de Recherches et Formation Avancee en Calcul Scientifique 65,536
138.50.0.0/16 AS1565 Headquarters, USAISC 65,536
138.132.0.0/16 AS20746 Italtel SPA 65,536
138.254.0.0/16 AS243 L3Harris Technologies, Inc. 65,536
138.232.0.0/16 AS1110 University of Innsbruck 65,536
138.195.0.0/16 AS212424 CENTRALESUPELEC 65,536
138.17.0.0/16 AS749 DoD Network Information Center 65,536
138.18.0.0/16 AS749 DoD Network Information Center 65,536

Hosted domains

There are 3 domain names hosted across 1 IP address 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
Read more

Pingable IPs

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

IP Address ASN Details
138.51.24.42 AS239 University of Toronto 0.42ms from Toronto, CA

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
71.139.102.208 AS7018 AT&T Enterprises, LLC 7.32ms from Atlanta, US
54.39.49.48 AS16276 OVH SAS 0.06ms from Beauharnois, CA
172.172.57.224 AS8075 Microsoft Corporation 0.25ms from Boydton, US
52.213.131.224 AS16509 Amazon.com, Inc. 0.19ms from Dublin, IE
73.18.163.16 AS7922 Comcast Cable Communications, LLC 13.27ms from Flint, US
86.219.254.176 AS3215 Orange S.A. 10.56ms from Frankfurt am Main, DE
9.223.112.16 AS8075 Microsoft Corporation 0.30ms from Gaevle, SE
2.16.20.32 AS12389 PJSC Rostelecom 5.53ms from Kazan, RU
77.228.235.160 AS12430 VODAFONE ESPANA S.A.U. 0.79ms from Madrid, ES
80.21.96.48 AS3269 Telecom Italia S.p.A. 6.24ms from Milan, IT
34.19.186.16 AS396982 Google LLC 0.10ms from Montreal, CA
108.30.206.16 AS701 Verizon Business 3.43ms from New York City, US
133.206.70.96 AS2518 BIGLOBE Inc. 3.00ms from Osaka, JP
177.105.233.0 AS262313 Internet Pinheirense Ltda - ME 12.30ms from Osasco, BR
121.42.205.32 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 0.57ms from Qingdao, CN
187.106.124.208 AS28573 Claro NXT Telecomunicacoes Ltda 8.62ms from Sao Paulo, BR
218.234.193.240 AS9318 SK Broadband Co Ltd 5.95ms from Seoul, KR
60.112.20.48 AS17676 SoftBank Corp. 3.08ms from Tokyo, JP
77.79.215.144 AS15694 Atman Sp. z o.o. 0.24ms from Warsaw, PL
137.56.37.80 AS1103 SURF B.V. 10.42ms from Amsterdam, NL
35.206.137.112 AS15169 Google LLC 0.15ms from Brussels, BE
81.243.71.240 AS5432 Proximus NV 2.62ms from Brussels, BE
74.137.100.144 AS10796 Charter Communications Inc 14.42ms from Chicago, US
217.254.63.16 AS3320 Deutsche Telekom AG 7.32ms from Frankfurt am Main, DE
117.2.128.48 AS7552 Viettel Group 17.90ms from Hanoi, VN

Traceroute

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

$
traceroute -a -n -q1 -m5 138.51.180.46
traceroute to 138.51.180.46 (138.51.180.46): 5 hops max, 52 byte packets
2 [AS7806] 216.229.23.44 5.037 ms
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Lincoln, US
On

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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