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:      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:        2026-01-20
OfficePhone:    +1-416-978-3855
MobilePhone:    +1-416-879-3684
FaxPhone:       +1-416-978-6620
Mailbox:        doug.carson@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

Nearby Ranges

BGP prefixes that overlap with 138.0.0.0/8

Range ASN Company Num of IPs
138.13.0.0/16 AS56 Air Force Systems Networking 65,536
138.233.0.0/16 AS56736 Vastra Gotalandsregionen 65,536
138.26.0.0/16 AS3452 University of Alabama at Birmingham - University Computer Center 65,536
138.6.0.0/16 AS38956 Uppsala local government 65,536
138.50.0.0/16 AS367 Headquarters, USAISC 65,536
138.237.0.0/16 AS18791 Texas Christian University 65,536
138.116.0.0/16 AS33004 SUNY Empire State University 65,536
138.29.0.0/16 AS22742 Coast Guard Academy 65,536
138.115.0.0/16 AS270 National Aeronautics and Space Administration 65,536
138.66.0.0/16 AS20981 Prov. Casamassima Km.3 65,536
138.62.0.0/16 AS25400 Norwegian State Railways 65,536
138.210.0.0/16 AS209 CenturyLink Communications, LLC 65,536
138.225.0.0/16 AS20868 ABB Information Systems Ltd 65,536
138.210.0.0/16 AS11398 CenturyLink Communications, LLC 65,536
138.34.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.210.0.0/16 AS22561 CenturyLink Communications, LLC 65,536
138.107.0.0/16 AS2497 OLYMPUS CORPORATION 65,536
138.9.0.0/16 AS18663 University of the Pacific 65,536
138.63.0.0/16 AS1715 Centre Europeen de Recherches et Formation Avancee en Calcul Scientifique 65,536
138.77.0.0/16 AS24433 Central Queensland University 65,536
138.236.0.0/16 AS17234 Gustavus Adolphus College 65,536
138.90.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.37.0.0/16 AS198864 Queen Mary University of London 65,536
138.132.0.0/16 AS20746 Italtel SPA 65,536
138.106.0.0/16 AS202116 SCANIA CV AB 65,536
138.220.0.0/16 AS10497 IBRD 65,536
138.70.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.52.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.130.0.0/16 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
138.27.0.0/16 AS1540 Headquarters, USAISC 65,536
138.86.0.0/16 AS15295 University of Northern Colorado 65,536
138.195.0.0/16 AS212424 CENTRALESUPELEC 65,536
138.92.0.0/16 AS11482 Canisius College 65,536
138.240.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.103.0.0/16 AS15830 AB Sandvik 65,536
138.50.0.0/16 AS1565 Headquarters, USAISC 65,536
138.22.0.0/16 AS1853 GeoSphere Austria 65,536
138.41.0.0/16 AS137 DIR-GARR - Roma 65,536
138.111.0.0/16 AS16509 Amazon Technologies Inc. 65,536
138.101.0.0/16 AS16509 Nikkei Inc. 65,536
138.232.0.0/16 AS1110 University of Innsbruck 65,536
138.210.0.0/16 AS14921 CenturyLink Communications, LLC 65,536
138.47.0.0/16 AS19564 Louisiana Tech University 65,536
138.210.0.0/16 AS5778 CenturyLink Communications, LLC 65,536

Hosted domains

There are 2 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

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

IP Address ASN Details
138.51.24.169 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
148.113.213.96 AS16276 OVH SAS 0.06ms from Beauharnois, CA
54.200.44.32 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
24.2.132.112 AS7922 Comcast Cable Communications, LLC 8.86ms from Boston, US
20.223.114.128 AS8075 Microsoft Corporation 0.15ms from Dublin, IE
91.214.65.160 AS212238 Datacamp Limited 0.34ms from Frankfurt am Main, DE
182.185.198.0 AS17557 Pakistan Telecommunication Company Limited 2.51ms from Lahore, PK
18.132.224.176 AS16509 Amazon.com, Inc. 0.16ms from London, GB
81.147.77.160 AS2856 British Telecommunications PLC 3.26ms from London, GB
149.241.73.112 AS5607 Sky UK Limited 1.07ms from London, GB
2.136.159.128 AS3352 TELEFONICA DE ESPANA S.A.U. 2.58ms from Madrid, ES
31.209.68.32 AS136787 PacketHub S.A. 0.31ms from Manchester, GB
151.81.0.128 AS1267 WIND TRE S.P.A. 8.23ms from Milan, IT
79.31.25.80 AS3269 Telecom Italia S.p.A. 2.57ms from Milan, IT
67.245.110.208 AS12271 Charter Communications Inc 3.55ms from New York City, US
80.130.4.176 AS3320 Deutsche Telekom AG 3.67ms from Nuernberg, DE
86.253.144.112 AS3215 Orange S.A. 8.98ms from Paris, FR
45.145.120.0 AS50588 MINISTERE DE L'EUROPE ET DES AFFAIRES ETRANGERES 1.36ms from Paris, FR
54.159.227.160 AS14618 Amazon.com, Inc. 0.22ms from Reston, US
49.173.222.16 AS17858 LG POWERCOMM 1.98ms from Seoul, KR
119.149.57.0 AS38091 LG HelloVision Corp. 0.83ms from Seoul, KR
108.70.161.96 AS7018 AT&T Enterprises, LLC 3.21ms from Atlanta, US
124.176.35.80 AS1221 Telstra Limited 6.86ms from Brisbane, AU
197.145.249.144 AS36884 Wana Corporate 4.18ms from Casablanca, MA
185.80.79.96 AS2860 NOS COMUNICACOES, S.A. 15.01ms from Lisbon, PT
80.0.3.112 AS5089 Virgin Media Limited 1.04ms from London, GB

Traceroute

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

$
traceroute -a -n -q1 -m7 138.51.11.39
traceroute to 138.51.11.39 (138.51.11.39): 7 hops max, 52 byte packets
1 [AS15169] 142.251.247.66 247.807 ms
2 [AS15169] 192.178.99.34 248.379 ms
3 *
4 [AS26677] 66.97.16.20 223.899 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Mumbai, IN
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.

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