138.51.128.0/17

AS239  ·  University of Toronto

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Summary

Country Canada
Domain utoronto.ca
ASN AS239
Parent Range 138.51.0.0/16
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:      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


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

Overlapping Ranges

BGP prefixes that contain 138.51.128.0/17

Range ASN Company Num of IPs
138.51.0.0/16 AS239 University of Toronto 65,536

Nearby Ranges

BGP prefixes that overlap with 138.51.0.0/16

Range ASN Company Num of IPs
138.51.0.0/16 AS239 University of Toronto 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

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
82.217.109.1 AS33915 Vodafone Libertel B.V. 1.34ms from Amsterdam, NL
217.120.81.1 AS33915 Vodafone Libertel B.V. 4.13ms from Amsterdam, NL
71.191.161.1 AS701 Verizon Business 2.49ms from Ashburn, US
190.138.23.33 AS7303 Telecom Argentina S.A. 12.74ms from Asuncion, PY
50.223.60.241 AS7922 Comcast Cable Communications, LLC 0.93ms from Atlanta, US
188.83.97.1 AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 3.63ms from Braga, PT
201.212.105.1 AS7303 Telecom Argentina S.A. 9.26ms from Buenos Aires, AR
186.136.101.1 AS7303 Telecom Argentina S.A. 1.37ms from Buenos Aires, AR
78.164.196.1 AS9121 Turk Telekomunikasyon Anonim Sirketi 18.83ms from Bursa, TR
105.137.136.1 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 9.13ms from Casablanca, MA
50.207.172.145 AS7922 Comcast Cable Communications, LLC 1.09ms from Chicago, US
83.95.180.1 AS3292 TDC Holding A/S 4.15ms from Copenhagen, DK
47.161.80.1 AS5650 Frontier Communications of America, Inc. 4.07ms from Dallas, US
46.7.40.1 AS6830 Liberty Global B.V. 1.18ms from Dublin, IE
218.96.64.1 AS10212 China Enterprise ICT Solutions Limited 4.39ms from Guangzhou, CN
112.93.148.1 AS17816 China Unicom IP network China169 Guangdong province 4.54ms from Guangzhou, CN
218.13.62.1 AS4134 CHINANET-BACKBONE 8.93ms from Guangzhou, CN
117.149.7.1 AS56041 China Mobile communications corporation 3.54ms from Hangzhou, CN
154.204.235.161 AS135097 LUOGELANG (FRANCE) LIMITED 0.55ms from Hong Kong, HK
66.25.24.129 AS11427 Charter Communications Inc 10.59ms from Houston, US
116.138.234.1 AS4837 CHINA UNICOM China169 Backbone 15.08ms from Liaoyang, CN
82.14.202.1 AS5089 Virgin Media Limited 10.73ms from London, GB
76.80.37.161 AS20001 Charter Communications Inc 2.06ms from Los Angeles, US
77.147.84.1 AS15557 Societe Francaise Du Radiotelephone - SFR SA 7.41ms from Lyon, FR
2.112.142.113 AS3269 Telecom Italia S.p.A. 3.32ms from Milan, IT

Traceroute

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

$
traceroute -a -n -q1 -f3 -m7 138.51.230.162
traceroute to 138.51.230.162 (138.51.230.162): 7 hops max, 52 byte packets
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Brno, CZ
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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