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:        helpdesk@utah.edu General Help
Comment:        nocc@utah.edu Network Operations
Comment:        hostmaster@utah.edu DNS
Comment:        abuse@utah.edu spam and other abuse
Comment:        security@utah.edu
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:        abuse@utah.edu
Mailbox:        hostmaster@utah.edu
Mailbox:        noc@utah.edu
Mailbox:        security@utah.edu
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:        ray.carsey@utah.edu
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:        tim.urban@utah.edu
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 155.0.0.0/8

Range ASN Company Num of IPs
155.74.0.0/16 AS4010 Headquarters, USAISC 65,536
155.0.0.0/16 AS37532 Zambia Research and Education Network (ZAMREN) 65,536
155.247.0.0/16 AS3778 Temple University 65,536
155.60.0.0/16 AS396982 NATIONAL AUSTRALIA BANK LIMITED 65,536
155.251.0.0/16 AS37309 QCell Limited 65,536
155.229.0.0/16 AS3257 GTT Americas, LLC 65,536
155.240.0.0/16 AS3741 Agricultural Research Council 65,536
155.206.0.0/16 AS3477 National Oceanic and Atmospheric Administration 65,536
155.237.0.0/16 AS3741 Sasol South Africa (PTY) LTD 65,536
155.144.0.0/16 AS38195 Australian Postal Corporation 65,536
155.7.0.0/16 AS27066 DoD Network Information Center 65,536
155.24.0.0/16 AS1556 Headquarters, USAISC 65,536
155.240.0.0/16 AS2018 Agricultural Research Council 65,536
155.47.0.0/16 AS32125 Wheaton College 65,536
155.253.0.0/16 AS137 Area della Ricerca di Milano 65,536
155.223.0.0/16 AS2592 Ege University (EGE) 65,536
155.54.0.0/16 AS34511 Universidad de Murcia 65,536
155.7.0.0/16 AS27064 DoD Network Information Center 65,536
155.197.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.234.0.0/16 AS3741 South African Broadcasting Corporation 65,536
155.40.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.219.0.0/16 AS1540 Headquarters, USAISC 65,536
155.7.0.0/16 AS27065 DoD Network Information Center 65,536
155.33.0.0/16 AS156 Northeastern University 65,536
155.250.0.0/16 AS13167 Merck KGaA 65,536
155.155.0.0/16 AS1556 Headquarters, USAISC 65,536
155.92.0.0/16 AS11500 Milwaukee School of Engineering 65,536
155.53.0.0/16 AS158 Ericsson Inc. 65,536
155.238.0.0/16 AS2018 Cape Technikon 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
155.187.0.0/16 AS140637 Department of Climate Change Energy the Environment and Water 65,536
155.134.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.130.0.0/16 AS23005 SWITCH, LTD 65,536
155.48.0.0/16 AS16481 Babson College 65,536
155.155.0.0/16 AS1585 Headquarters, USAISC 65,536
155.43.0.0/16 AS25691 Connecticut State Colleges & Universities, Regional Community-Technical College System 65,536
155.230.0.0/16 AS10052 Kyungpook National University 65,536
155.193.0.0/16 AS16509 Amazon.com, Inc. 65,536
155.89.0.0/16 AS37081 Movicel Telecomunicacoes S.A. 65,536
155.9.0.0/16 AS1540 Headquarters, USAISC 65,536
155.31.0.0/16 AS11809 Embry-Riddle Aeronautical University 65,536
155.38.0.0/16 AS16509 Amazon Technologies Inc. 65,536
155.153.0.0/16 AS1540 Headquarters, USAISC 65,536
155.151.0.0/16 AS1540 Headquarters, USAISC 65,536
155.60.0.0/16 AS10235 NATIONAL AUSTRALIA BANK LIMITED 65,536
155.155.0.0/16 AS1554 Headquarters, USAISC 65,536
155.143.0.0/16 AS135887 Telstra Limited 65,536
155.75.0.0/16 AS4010 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 pccsdp.org 14
155.100.119.207 chooseyouutah.com 8
155.100.38.63 algorithmsforinnovation.net 7
155.100.188.108 nedarc.org 4
155.100.188.111 cpccrn.org 2
155.100.188.229 utahtrauma.org 1
155.100.104.76 bryanwjones.site 1
155.100.188.25 intermountaininjury.org 1
155.100.188.75 pecarn.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

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

IP Address ASN Details
155.100.239.177 AS17055 University of Utah 1.73ms from Salt Lake City, US
155.100.241.217 AS17055 University of Utah 1.92ms from Salt Lake City, US
155.100.141.63 AS17055 University of Utah 1.76ms from Salt Lake City, US
155.100.119.207 AS17055 University of Utah 1.59ms from Salt Lake City, US
155.100.126.82 AS17055 University of Utah 1.80ms from Salt Lake City, US
155.100.225.191 AS17055 University of Utah 1.90ms from Salt Lake City, US
155.100.200.19 AS17055 University of Utah 2.33ms from Salt Lake City, US
155.100.212.1 AS17055 University of Utah 1.95ms from Salt Lake City, US
155.100.22.137 AS17055 University of Utah 1.61ms from Salt Lake City, US
155.100.217.164 AS17055 University of Utah 1.86ms from Salt Lake City, US
155.100.233.210 AS17055 University of Utah 1.59ms from Salt Lake City, US
155.100.240.66 AS17055 University of Utah 1.95ms from Salt Lake City, US
155.100.62.88 AS17055 University of Utah 1.88ms from Salt Lake City, US
155.100.24.225 AS17055 University of Utah 1.80ms from Salt Lake City, US
155.100.194.147 AS17055 University of Utah 7.73ms from Salt Lake City, US
155.100.238.85 AS17055 University of Utah 1.70ms from Salt Lake City, US
155.100.195.52 AS17055 University of Utah 8.10ms from Salt Lake City, US
155.100.38.135 AS17055 University of Utah 1.71ms from Salt Lake City, US
155.100.188.108 AS17055 University of Utah 1.60ms from Salt Lake City, US
155.100.100.5 AS17055 University of Utah 2.01ms from Salt Lake City, US
155.100.111.240 AS17055 University of Utah 1.60ms from Salt Lake City, US
155.100.50.252 AS17055 University of Utah 1.64ms from Salt Lake City, US
155.100.5.190 AS17055 University of Utah 1.69ms from Salt Lake City, US
155.100.118.55 AS17055 University of Utah 1.68ms 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
195.240.141.240 AS1136 KPN B.V. 0.99ms from Amsterdam, NL
93.107.190.16 AS15502 Vodafone Ireland Limited 2.75ms from Dublin, IE
79.231.168.208 AS3320 Deutsche Telekom AG 1.29ms from Hamburg, DE
76.142.185.208 AS7922 Comcast Cable Communications, LLC 8.64ms from Houston, US
179.25.7.240 AS6057 Administracion Nacional de Telecomunicaciones 3.60ms from Montevideo, UY
35.215.36.80 AS15169 Google LLC 0.12ms from Montreal, CA
111.75.62.48 AS4134 CHINANET-BACKBONE 7.53ms from Nanchang, CN
180.235.8.208 AS4685 Asahi Net 13.28ms from Osaka, JP
194.21.23.48 AS3302 Retelit Digital Services S.p.A. 2.91ms from Rome, IT
176.130.165.160 AS5410 Bouygues Telecom SA 1.43ms from Saint-Denis, FR
144.41.140.176 AS553 BelWue-Koordination 3.65ms from Zuerich, CH
172.220.207.32 AS20115 Charter Communications LLC 16.14ms from Atlanta, US
8.147.119.112 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 0.67ms from Beijing, CN
35.95.92.64 AS16509 Amazon.com, Inc. 0.57ms from Boardman, US
41.43.71.16 AS8452 TE-AS 8.71ms from Cairo, EG
109.59.73.240 AS44034 Hi3G Access AB 6.55ms from Copenhagen, DK
134.28.39.160 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 0.87ms from Hamburg, DE
108.227.219.32 AS7018 AT&T Enterprises, LLC 3.45ms from Houston, US
76.89.238.48 AS20001 Charter Communications Inc 4.36ms from Los Angeles, US
158.179.4.0 AS31898 Oracle Corporation 0.24ms from Melbourne, AU
15.207.187.32 AS16509 Amazon.com, Inc. 0.10ms from Mumbai, IN
48.192.50.16 AS8075 Microsoft Corporation 0.29ms from Quincy, US
13.50.44.224 AS16509 Amazon.com, Inc. 0.09ms from Stockholm, SE
110.231.37.48 AS4837 CHINA UNICOM China169 Backbone 9.19ms from Beijing, CN
76.119.97.64 AS7922 Comcast Cable Communications, LLC 8.58ms from Boston, US

Traceroute

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

$
traceroute -a -n -q1 -f10 -m14 155.100.131.99
traceroute to 155.100.131.99 (155.100.131.99): 14 hops max, 52 byte packets
10 [AS9121] 81.212.214.26 0.692 ms
12 *
13 *
14 *
Measurement taken from IPinfo ProbeNet in Istanbul, TR
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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