1. All IP Ranges
  2. 155.0.0.0/8
  3. 155.100.0.0/16
  4. AS17055  | 155.100.0.0/16

155.100.0.0/16

AS17055  ·  University of Utah

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Summary

Country United States
Domain utah.edu
ASN AS17055
Registry ARIN
ID UTAH-MED-NET

WHOIS Details

NetHandle:      NET-155-100-0-0-1
OrgID:          UNIVER-15-Z
Parent:         NET-155-0-0-0-0
NetName:        UTAH-MED-NET
NetRange:       155.100.0.0 - 155.100.255.255
NetType:        allocation
Comment:        http://www.utah.edu
Comment:        [email protected] General Help
Comment:        [email protected] Network Operations
Comment:        [email protected] DNS
Comment:        [email protected] spam and other abuse
Comment:        [email protected]
RegDate:        1991-11-01
Updated:        2021-12-14
TechHandle:     ZU27-ARIN
Source:         ARIN


OrgID:          UNIVER-15-Z
OrgName:        University of Utah
CanAllocate:    
Street:         University of Utah
Street:         University Information Technology
Street:         102 S. 200 E., Suite 110
City:           Salt Lake City
State/Prov:     UT
Country:        US
PostalCode:     84111
Comment:        http://it.utah.edu/network
Comment:        Standard NOC hours are 7:00 AM to 6:00 PM
Comment:        After hours, please contact Helpdesk to escalate to the on call engineer.
RegDate:        2010-05-13
Updated:        2025-10-30
OrgAdminHandle: ZU27-ARIN
OrgTechHandle:  CARSE3-ARIN
OrgTechHandle:  URBAN124-ARIN
OrgAbuseHandle: ZU27-ARIN
OrgNOCHandle:   ZU27-ARIN
Source:         ARIN


POCHandle:      ZU27-ARIN
IsRole:         Y
LastName:       University of Utah
FirstName:      
Street:         University Information Technology - UIT
Street:         102 S. 200 E., Suite 110
City:           Salt Lake City
State/Prov:     UT
Country:        US
PostalCode:     84111
RegDate:        2000-08-07
Updated:        2025-07-01
OfficePhone:    +1-801-587-1300
MobilePhone:    +1-801-581-4000
FaxPhone:       +1-801-585-3704
Mailbox:        [email protected]
Mailbox:        [email protected]
Mailbox:        [email protected]
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      CARSE3-ARIN
IsRole:         N
LastName:       Carsey
FirstName:      Ray
Street:         102 South 200 East
City:           Salt Lake City
State/Prov:     UT
Country:        US
PostalCode:     84111
RegDate:        2018-01-25
Updated:        2025-06-03
OfficePhone:    +1-801-587-1302
MobilePhone:    +1-801-554-0777
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      URBAN124-ARIN
IsRole:         N
LastName:       Urban
FirstName:      Timothy
Street:         102 South 200 East
City:           Salt Lake City
State/Prov:     UT
Country:        US
PostalCode:     84109
RegDate:        2025-10-30
Updated:        2025-10-30
OfficePhone:    +1-801-581-4000
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 155.0.0.0/8

Range ASN Company Num of IPs
155.216.0.0/16 AS367 Headquarters, USAISC 65,536
155.151.0.0/16 AS367 Headquarters, USAISC 65,536
155.149.0.0/16 AS367 Headquarters, USAISC 65,536
155.215.0.0/16 AS367 Headquarters, USAISC 65,536
155.150.0.0/16 AS367 Headquarters, USAISC 65,536
155.240.0.0/16 AS2018 Agricultural Research Council 65,536
155.147.0.0/16 AS367 Headquarters, USAISC 65,536
155.65.0.0/16 AS36291 Sanofi 65,536
155.47.0.0/16 AS32125 Wheaton College 65,536
155.153.0.0/16 AS367 Headquarters, USAISC 65,536
155.155.0.0/16 AS1585 Headquarters, USAISC 65,536
155.135.0.0/16 AS2152 California State University, Dominguez Hills 65,536
155.170.0.0/16 AS20057 AT&T Enterprises, LLC 65,536
155.238.0.0/16 AS2018 Cape Technikon 65,536
155.5.0.0/16 AS1637 Headquarters, USAISC 65,536
155.229.0.0/16 AS3257 GTT Americas, LLC 65,536
155.48.0.0/16 AS16481 Babson College 65,536
155.228.0.0/16 AS25021 Etat de Fribourg 65,536
155.178.0.0/16 AS22773 Federal Aviation Administration 65,536
155.130.0.0/16 AS22911 SWITCH, LTD 65,536
155.38.0.0/16 AS16509 Amazon Technologies Inc. 65,536
155.178.0.0/16 AS22773 Federal Aviation Administration 65,536
155.155.0.0/16 AS1556 Headquarters, USAISC 65,536
155.33.0.0/16 AS156 Northeastern University 65,536
155.163.0.0/16 AS20057 AT&T Enterprises, LLC 65,536
155.53.0.0/16 AS158 Ericsson Inc. 65,536
155.92.0.0/16 AS11500 Milwaukee School of Engineering 65,536
155.166.0.0/16 AS20057 AT&T Enterprises, LLC 65,536
155.132.0.0/16 AS200656 Nokia EMEA 65,536
155.232.0.0/16 AS2018 TENET (The UNINET Project) 65,536
155.109.0.0/16 AS10273 Florida Power & Light Company 65,536
155.185.0.0/16 AS137 Universita' degli Studi di Modena e Reggio Emilia 65,536
155.68.0.0/16 AS31746 Franklin and Marshall College 65,536
155.253.0.0/16 AS137 Area della Ricerca di Milano 65,536
155.31.0.0/16 AS11809 Embry-Riddle Aeronautical University 65,536
155.187.0.0/16 AS140637 Department of Climate Change Energy the Environment and Water 65,536
155.134.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.6.0.0/16 AS1637 Headquarters, USAISC 65,536
155.230.0.0/16 AS10052 Kyungpook National University 65,536
155.193.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.3.0.0/16 AS21853 New Brunswick Power Holding Corporation 65,536
155.197.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.250.0.0/16 AS13167 Merck KGaA 65,536
155.151.0.0/16 AS1540 Headquarters, USAISC 65,536
155.143.0.0/16 AS135887 Telstra Limited 65,536
155.40.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.60.0.0/16 AS10235 NATIONAL AUSTRALIA BANK LIMITED 65,536
155.155.0.0/16 AS1554 Headquarters, USAISC 65,536
155.24.0.0/16 AS1556 Headquarters, USAISC 65,536
155.217.0.0/16 AS367 Headquarters, USAISC 65,536

Hosted domains

There are 38 domain names hosted across 9 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
155.100.188.138 emscdc.org 14
155.100.119.207 chooseyouutah.com 8
155.100.38.63 utahgenomeproject.org 7
155.100.188.108 emssurveys.org 4
155.100.188.111 cpccrn.org 2
155.100.188.75 pecarn.org 1
155.100.104.76 bryanwjones.site 1
155.100.188.229 utahtrauma.org 1
155.100.188.25 intermountaininjury.org 1

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

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

IP Address ASN Details
155.100.5.180 AS17055 University of Utah 2.17ms from Salt Lake City, US
155.100.119.207 AS17055 University of Utah 2.15ms from Salt Lake City, US
155.100.38.4 AS17055 University of Utah 1.73ms from Salt Lake City, US
155.100.22.139 AS17055 University of Utah 2.05ms from Salt Lake City, US
155.100.126.82 AS17055 University of Utah 2.21ms from Salt Lake City, US
155.100.141.63 AS17055 University of Utah 2.26ms from Salt Lake City, US
155.100.62.88 AS17055 University of Utah 2.28ms from Salt Lake City, US
155.100.111.200 AS17055 University of Utah 2.03ms from Salt Lake City, US
155.100.118.244 AS17055 University of Utah 2.20ms from Salt Lake City, US
155.100.50.10 AS17055 University of Utah 1.82ms from Salt Lake City, US
155.100.24.240 AS17055 University of Utah 2.18ms from Salt Lake City, US
155.100.100.5 AS17055 University of Utah 2.45ms from Salt Lake City, US
155.100.241.217 AS17055 University of Utah 2.21ms from Salt Lake City, US
155.100.212.1 AS17055 University of Utah 2.18ms from Salt Lake City, US
155.100.200.19 AS17055 University of Utah 2.30ms from Salt Lake City, US
155.100.217.225 AS17055 University of Utah 2.33ms from Salt Lake City, US
155.100.239.177 AS17055 University of Utah 2.36ms from Salt Lake City, US
155.100.233.210 AS17055 University of Utah 2.28ms from Salt Lake City, US
155.100.195.52 AS17055 University of Utah 8.06ms from Salt Lake City, US
155.100.240.66 AS17055 University of Utah 2.26ms from Salt Lake City, US
155.100.188.229 AS17055 University of Utah 2.11ms from Salt Lake City, US
155.100.194.147 AS17055 University of Utah 8.07ms from Salt Lake City, US
155.100.238.85 AS17055 University of Utah 2.03ms from Salt Lake City, US
155.100.225.135 AS17055 University of Utah 2.45ms from Salt Lake City, US

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
98.200.147.96 AS7922 Comcast Cable Communications, LLC 11.54ms from Houston, US
41.162.36.192 AS36937 Liquid Telecommunications South Africa (Pty) Ltd 8.03ms from Johannesburg, ZA
92.106.122.176 AS3303 Swisscom (Switzerland) Ltd 0.73ms from Lausanne, CH
37.60.245.224 AS51167 Contabo GmbH 0.20ms from Lauterbourg, FR
108.89.117.112 AS7018 AT&T Enterprises, LLC 18.77ms from Los Angeles, US
138.100.88.160 AS766 RedIRIS Autonomous System 0.72ms from Madrid, ES
23.56.141.16 AS20940 Akamai International B.V. 0.38ms from Tokyo, JP
114.184.81.112 AS4713 NTT DOCOMO BUSINESS,Inc. 10.81ms from Tokyo, JP
99.239.213.80 AS812 Rogers Communications Canada Inc. 2.84ms from Toronto, CA
178.42.215.96 AS5617 Orange Polska Spolka Akcyjna 2.06ms from Warsaw, PL
105.157.254.240 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 2.07ms from Casablanca, MA
160.19.165.112 AS152779 PT Delta Solusi Internet 4.12ms from Jakarta, ID
41.24.52.64 AS36994 Vodacom 6.66ms from Johannesburg, ZA
31.222.153.240 AS15395 Rackspace Ltd. 1.07ms from London, GB
38.252.128.48 AS271942 CV HOTSPOT, S.R.L. 19.66ms from Miami, US
20.209.81.16 AS8075 Microsoft Corporation 0.35ms from Milan, IT
147.219.191.64 AS20115 Charter Communications LLC 9.32ms from Minneapolis, US
109.161.55.176 AS12389 PJSC Rostelecom 11.13ms from Moscow, RU
3.216.18.64 AS14618 Amazon.com, Inc. 0.16ms from Reston, US
69.107.163.112 AS7018 AT&T Enterprises, LLC 1.62ms from San Jose, US
73.133.191.144 AS7922 Comcast Cable Communications, LLC 7.02ms from Ashburn, US
109.229.186.192 AS51997 LLP Asket 7.01ms from Astana, KZ
194.158.68.96 AS6752 Andorra Telecom 4.76ms from Barcelona, ES
212.132.123.64 AS8560 IONOS SE 0.70ms from Berlin, DE
92.250.16.128 AS42863 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 11.96ms from Braga, PT

Traceroute

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

$
traceroute -a -n -q1 -f4 -m7 155.100.34.49
traceroute to 155.100.34.49 (155.100.34.49): 7 hops max, 52 byte packets
4 [AS21928] 100.199.0.93 0.077 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Tieling, 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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