1. All IP Ranges
  2. 128.0.0.0/8
  3. 128.100.0.0/16
  4. AS239  | 128.100.0.0/16

128.100.0.0/16

AS239  ·  University of Toronto

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Summary

Country Canada
Domain utoronto.ca
ASN AS239
Registry ARIN
ID TORONTO

WHOIS Details

NetHandle:      NET-128-100-0-0-1
OrgID:          UNIVER-36
Parent:         NET-128-0-0-0-0
NetName:        TORONTO
NetRange:       128.100.0.0 - 128.100.255.255
NetType:        allocation
RegDate:        1986-01-09
Updated:        2021-12-14
TechHandle:     RS2206-ARIN
AbuseHandle:    NSMAINT-ARIN
NOCHandle:      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:      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:      NSMAINT-ARIN
IsRole:         N
LastName:       Nsmaint
FirstName:      A
Street:         255 Huron Street
Street:         Room 350
City:           Toronto
State/Prov:     ON
Country:        CA
PostalCode:     M5S 1C1
RegDate:        1992-08-03
Updated:        2023-01-07
OfficePhone:    +1-416-978-4621
FaxPhone:       +1-416-978-6620
Mailbox:        nsmaint@utcs.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:      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 128.0.0.0/8

Range ASN Company Num of IPs
128.78.0.0/15 AS5410 Bouygues Telecom SA 131,072
128.178.0.0/15 AS559 Ecublens Camp Net 131,072
128.130.0.0/15 AS679 Technische Universitaet Wien 131,072
128.255.0.0/16 AS3676 University of Iowa 65,536
128.143.0.0/16 AS225 University of Virginia 65,536
128.192.0.0/16 AS36441 University of Georgia 65,536
128.55.0.0/16 AS2936 ESnet 65,536
128.183.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.206.0.0/16 AS26934 University of Missouri-Columbia 65,536
128.175.0.0/16 AS34 University of Delaware 65,536
128.102.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.189.0.0/16 AS271 BCNET 65,536
128.217.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.158.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.22.0.0/16 AS17511 OPTAGE Inc. 65,536
128.18.0.0/16 AS264 SRI International 65,536
128.12.0.0/16 AS32 Stanford University 65,536
128.228.0.0/16 AS31822 City University of New York 65,536
128.53.0.0/16 AS2514 NTT PC Communications,Inc. 65,536
128.47.0.0/16 AS252 Headquarters, USAISC 65,536
128.8.0.0/16 AS27 University of Maryland 65,536
128.87.0.0/16 AS158 Telefonaktiebolaget LM Ericsson 65,536
128.19.0.0/16 AS27064 DoD Network Information Center 65,536
128.37.0.0/16 AS27064 Headquarters, USAISC 65,536
128.214.0.0/16 AS1741 CSC - Tieteen tietotekniikan keskus Oy 65,536
128.159.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.3.0.0/16 AS16 Lawrence Berkeley National Laboratory 65,536
128.157.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.34.0.0/16 AS22 Navy Network Information Center (NNIC) 65,536
128.49.0.0/16 AS22 Navy Network Information Center (NNIC) 65,536
128.93.0.0/16 AS2200 Institut National de Recherche en Informatique et Automatique 65,536
128.39.0.0/16 AS224 UNINETT backbone network 65,536
128.231.0.0/16 AS3527 National Institutes of Health 65,536
128.27.0.0/16 AS17511 OPTAGE Inc. 65,536
128.28.0.0/16 AS2514 NTT PC Communications,Inc. 65,536
128.155.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.103.0.0/16 AS198949 Harvard University 65,536
128.135.0.0/16 AS160 The University of Chicago 65,536
128.4.0.0/16 AS2 University of Delaware 65,536
128.233.0.0/16 AS22950 University of Saskatchewan 65,536
128.163.0.0/16 AS23162 University of Kentucky 65,536
128.151.0.0/16 AS20 University of Rochester 65,536
128.170.0.0/16 AS243 L3Harris Technologies, Inc. 65,536
128.252.0.0/16 AS2552 Washington University 65,536
128.253.0.0/16 AS26 Cornell University 65,536
128.98.0.0/16 AS24775 QinetiQ TIM 65,536
128.186.0.0/16 AS2553 Florida State University 65,536
128.32.0.0/16 AS25 University of California at Berkeley 65,536
128.234.0.0/16 AS25019 Saudi Telecom Company JSC 65,536

Hosted domains

There are 223 domain names hosted across 70 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
128.100.72.50 dwightschmidt.com 27
128.100.3.30 adityabhargava.ca 26
128.100.190.11 videoatlas.surgery 22
128.100.4.14 mehimasingh.com 20
128.100.4.21 hci-ethics.com 12
128.100.222.196 systemsontology.org 8
128.100.102.5 utoronto.org 8
128.100.72.80 age-cap.com 6
128.100.190.21 ptgames.ca 5
128.100.5.14 daccs.ca 5
128.100.4.20 speech-interaction.org 5
128.100.48.53 simmonslab.ca 5
128.100.10.129 wearcomp.org 5
128.100.9.243 salmaemara.com 4
128.100.33.165 uoftintramurals.ca 4
128.100.242.150 macintoshclinic.ca 3
128.100.72.160 neighbourhoodchange.ca 3
128.100.89.92 steffanigrondin.com 3
128.100.31.56 codebloglearn.io 2
128.100.48.50 biomedicalsimulationlab.ca 2

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

2,128 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
128.100.27.199 AS239 University of Toronto 0.69ms from Toronto, CA
128.100.84.65 AS239 University of Toronto 0.86ms from Toronto, CA
128.100.55.32 AS239 University of Toronto 1.47ms from Toronto, CA
128.100.113.129 AS239 University of Toronto 1.27ms from Toronto, CA
128.100.93.46 AS239 University of Toronto 0.91ms from Toronto, CA
128.100.108.253 AS239 University of Toronto 0.81ms from Toronto, CA
128.100.77.31 AS239 University of Toronto 0.93ms from Toronto, CA
128.100.126.129 AS239 University of Toronto 0.90ms from Toronto, CA
128.100.122.29 AS239 University of Toronto 0.88ms from Toronto, CA
128.100.94.250 AS239 University of Toronto 0.76ms from Toronto, CA
128.100.132.223 AS239 University of Toronto 0.74ms from Toronto, CA
128.100.23.1 AS239 University of Toronto 0.84ms from Toronto, CA
128.100.88.18 AS239 University of Toronto 0.87ms from Toronto, CA
128.100.37.51 AS239 University of Toronto 1.35ms from Toronto, CA
128.100.151.27 AS239 University of Toronto 0.82ms from Toronto, CA
128.100.121.48 AS239 University of Toronto 0.87ms from Toronto, CA
128.100.36.36 AS239 University of Toronto 1.49ms from Toronto, CA
128.100.117.1 AS239 University of Toronto 0.86ms from Toronto, CA
128.100.149.48 AS239 University of Toronto 0.84ms from Toronto, CA
128.100.166.167 AS239 University of Toronto 0.83ms from Toronto, CA
128.100.68.200 AS239 University of Toronto 0.68ms from Toronto, CA
128.100.5.110 AS239 University of Toronto 0.83ms from Toronto, CA
128.100.102.3 AS239 University of Toronto 0.62ms from Toronto, CA
128.100.120.44 AS239 University of Toronto 0.68ms from Toronto, CA
128.100.3.82 AS239 University of Toronto 0.76ms 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
48.217.232.192 AS8075 Microsoft Corporation 0.52ms from Ashburn, US
81.82.151.160 AS6848 Telenet BV 4.85ms from Brussels, BE
177.53.182.32 AS271020 Adrianópolis Solução Tecnologica Ltda 2.67ms from Curitiba, BR
212.185.130.32 AS3320 Deutsche Telekom AG 17.19ms from Duesseldorf, DE
51.195.233.80 AS16276 OVH SAS 0.08ms from Erith, GB
84.149.102.144 AS3320 Deutsche Telekom AG 8.90ms from Frankfurt am Main, DE
171.254.106.48 AS7552 Viettel Group 1.64ms from Ho Chi Minh City, VN
120.221.187.16 AS9808 China Mobile Communications Group Co., Ltd. 0.83ms from Jinan, CN
152.89.147.96 AS47806 Cesar Maffini Martin 15.30ms from Madrid, ES
189.228.82.240 AS8151 UNINET 1.65ms from Mexico City, MX
85.40.204.240 AS3269 Telecom Italia S.p.A. 9.35ms from Milan, IT
184.148.39.208 AS577 Bell Canada 3.90ms from Montreal, CA
163.176.143.112 AS31898 Oracle Corporation 0.32ms from Sao Paulo, BR
1.237.187.144 AS9318 SK Broadband Co Ltd 1.81ms from Seoul, KR
137.83.114.0 AS14593 Space Exploration Technologies Corporation 1.00ms from Tokyo, JP
2.50.62.160 AS5384 Emirates Internet 3.98ms from Al Fujairah City, AE
84.35.145.240 AS21221 Infopact Netwerkdiensten B.V. 0.81ms from Amsterdam, NL
185.141.123.240 AS204877 Kupper IT GmbH 5.19ms from Berlin, DE
35.160.74.0 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
34.131.221.128 AS396982 Google LLC 0.09ms from Delhi, IN
79.208.217.160 AS3320 Deutsche Telekom AG 4.09ms from Frankfurt am Main, DE
86.145.54.144 AS2856 British Telecommunications PLC 5.55ms from London, GB
90.199.219.96 AS5607 Sky UK Limited 4.44ms from London, GB
172.119.145.208 AS20001 Charter Communications Inc 5.93ms from Los Angeles, US
153.197.49.80 AS4713 NTT DOCOMO BUSINESS,Inc. 6.14ms from Osaka, JP

Traceroute

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

$
traceroute -a -n -q1 128.100.126.129
traceroute to 128.100.126.129 (128.100.126.129): 64 hops max, 52 byte packets
2 [] 206.108.34.40 0.765 ms
4 [AS26677] 66.97.22.49 0.383 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Toronto, CA
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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