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:      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:      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:      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
138.190.0.0/16 AS3303 Berne, Switzerland 65,536
138.81.0.0/16 AS3303 ISO Central Secretariat 65,536
138.62.0.0/16 AS25400 Norwegian State Railways 65,536
138.210.0.0/16 AS29817 CenturyLink Communications, LLC 65,536
138.223.0.0/16 AS3303 65,536
138.192.0.0/16 AS21727 Hamline University 65,536
138.210.0.0/16 AS22186 CenturyLink Communications, LLC 65,536
138.77.0.0/16 AS24433 Central Queensland University 65,536
138.210.0.0/16 AS22561 CenturyLink Communications, LLC 65,536
138.201.0.0/16 AS24940 Server Block 65,536
138.48.0.0/16 AS2611 Facultes Universitaires Notre Dame de la Paix 65,536
138.116.0.0/16 AS33004 SUNY Empire State University 65,536
138.70.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.52.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.210.0.0/16 AS11398 CenturyLink Communications, LLC 65,536
138.111.0.0/16 AS16509 Amazon Technologies Inc. 65,536
138.254.0.0/16 AS243 L3Harris Technologies, Inc. 65,536
138.231.0.0/16 AS2269 Ecole Normale Superieure Paris-Saclay EPSCP 65,536
138.101.0.0/16 AS16509 Nikkei Inc. 65,536
138.22.0.0/16 AS1853 GeoSphere Austria 65,536
138.237.0.0/16 AS18791 Texas Christian University 65,536
138.106.0.0/16 AS202116 SCANIA CV AB 65,536
138.90.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.240.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.225.0.0/16 AS20868 ABB Information Systems Ltd 65,536
138.115.0.0/16 AS270 National Aeronautics and Space Administration 65,536
138.220.0.0/16 AS10497 IBRD 65,536
138.86.0.0/16 AS15295 University of Northern Colorado 65,536
138.34.0.0/16 AS16509 Amazon.com, Inc. 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
138.15.0.0/16 AS10753 NEC Laboratories America, Inc. 65,536
138.195.0.0/16 AS2200 CENTRALESUPELEC 65,536
138.102.0.0/16 AS2200 INRAE 65,536
138.27.0.0/16 AS1540 Headquarters, USAISC 65,536
138.92.0.0/16 AS11482 Canisius College 65,536
138.50.0.0/16 AS1565 Headquarters, USAISC 65,536
138.236.0.0/16 AS17234 Gustavus Adolphus College 65,536
138.63.0.0/16 AS1715 Centre Europeen de Recherches et Formation Avancee en Calcul Scientifique 65,536
138.103.0.0/16 AS15830 AB Sandvik 65,536
138.9.0.0/16 AS18663 University of the Pacific 65,536
138.37.0.0/16 AS198864 Queen Mary University of London 65,536
138.47.0.0/16 AS19564 Louisiana Tech University 65,536
138.232.0.0/16 AS1110 University of Innsbruck 65,536
138.41.0.0/16 AS137 DIR-GARR - Roma 65,536
138.210.0.0/16 AS14921 CenturyLink Communications, LLC 65,536
138.26.0.0/16 AS3452 University of Alabama at Birmingham - University Computer 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
138.51.89.209 priveillance.com 3

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

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

IP Address ASN Details
138.51.24.95 AS239 University of Toronto 114.04ms from Tirana, AL

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
175.22.248.80 AS4837 CHINA UNICOM China169 Backbone 3.76ms from Changchun, CN
75.1.5.144 AS7018 AT&T Enterprises, LLC 4.01ms from Dallas, US
43.157.34.16 AS132203 Tencent Building, Kejizhongyi Avenue 0.34ms from Frankfurt am Main, DE
3.66.238.208 AS16509 Amazon.com, Inc. 0.14ms from Frankfurt am Main, DE
98.156.185.16 AS11427 Charter Communications Inc 12.27ms from Houston, US
94.174.221.16 AS5089 Virgin Media Limited 9.01ms from London, GB
24.253.56.32 AS22773 Cox Communications Inc. 6.21ms from Los Angeles, US
23.208.119.240 AS16625 Akamai Technologies, Inc. 0.50ms from Miami, US
89.86.155.160 AS5410 Bouygues Telecom SA 6.41ms from Paris, FR
39.76.179.176 AS4837 CHINA UNICOM China169 Backbone 4.71ms from Qingdao, CN
5.158.67.240 AS199181 Orakom S.r.l. 7.88ms from Rome, IT
93.64.128.0 AS30722 Vodafone Italia S.p.A. 5.96ms from Rome, IT
175.215.98.32 AS4766 Korea Telecom 6.58ms from Seoul, KR
117.53.80.0 AS9943 KangNam CableTV 0.75ms from Seoul, KR
82.218.115.160 AS8339 kabelplus GmbH 1.98ms from Vienna, AT
44.247.51.208 AS16509 Amazon.com, Inc. 0.52ms from Boardman, US
221.201.198.0 AS4837 CHINA UNICOM China169 Backbone 11.04ms from Liaoyang, CN
109.145.230.16 AS2856 British Telecommunications PLC 4.84ms from London, GB
90.215.150.80 AS5607 Sky UK Limited 2.41ms from London, GB
204.14.111.176 AS13332 Hype Enterprises 0.20ms from Los Angeles, US
35.182.70.128 AS16509 Amazon.com, Inc. 0.14ms from Montreal, CA
178.141.12.64 AS8359 MTS PJSC 16.24ms from Moscow, RU
72.186.191.16 AS33363 Charter Communications, Inc 14.68ms from Orlando, US
78.196.235.96 AS12322 Free SAS 10.60ms from Paris, FR
32.214.49.0 AS46690 Southern New England Telephone Company and SNET America, Inc. 7.28ms from Secaucus, US

Traceroute

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

$
traceroute -a -n -q1 -f4 -m9 138.51.201.178
traceroute to 138.51.201.178 (138.51.201.178): 9 hops max, 52 byte packets
5 *
7 *
8 *
9 *
Measurement taken from IPinfo ProbeNet in Shenzhen, CN
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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