165.123.0.0/16

AS55 · University of Pennsylvania

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Summary

Country	United States
Domain	upenn.edu
ASN	AS55
Registry	ARIN
ID	UPENN

WHOIS Details

NetHandle:      NET-165-123-0-0-1
OrgID:          UNIVER-8-Z
Parent:         NET-165-0-0-0-0
NetName:        UPENN
NetRange:       165.123.0.0 - 165.123.255.255
NetType:        allocation
RegDate:        1993-05-28
Updated:        2021-12-14
Source:         ARIN


OrgID:          UNIVER-8-Z
OrgName:        University of Pennsylvania
CanAllocate:    
Street:         3401 Walnut Street
Street:         Suite 221A
City:           Philadelphia
State/Prov:     PA
Country:        US
PostalCode:     19104-6228
RegDate:        2010-01-05
Updated:        2022-08-03
OrgAdminHandle: UNIVE-ARIN
OrgTechHandle:  OBRIE72-ARIN
OrgAbuseHandle: ISO-ARIN
OrgNOCHandle:   UNIVE-ARIN
Source:         ARIN


POCHandle:      UNIVE-ARIN
IsRole:         Y
LastName:       University of Pennsylvania
FirstName:      
Street:         3401 Walnut Street
Street:         Suite 265C
City:           Philadelphia
State/Prov:     PA
Country:        US
PostalCode:     19104-6228
RegDate:        2002-12-10
Updated:        2025-08-27
OfficePhone:    +1-215-573-9631
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      OBRIE72-ARIN
IsRole:         N
LastName:       O'Brien
FirstName:      John
Street:         3401 Walnut St
City:           Philadelphia
State/Prov:     PA
Country:        US
PostalCode:     19104
RegDate:        2014-06-17
Updated:        2025-03-28
OfficePhone:    +1-215-898-9818
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      ISO-ARIN
IsRole:         Y
LastName:       Information Security Officer
FirstName:      
Street:         3401 Walnut Street
Street:         Rm C226
City:           Philadelphia
State/Prov:     PA
Country:        US
PostalCode:     19104-6228
RegDate:        2002-12-11
Updated:        2025-06-02
OfficePhone:    +1-215-898-2172
FaxPhone:       +1-215-573-2037
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 165.0.0.0/8

Range	ASN	Company	Num of IPs
165.56.0.0/13	AS37154	Zambia Telecommunications Company Ltd aka ZAMTEL	524,288
165.210.0.0/15	AS15964	CAMTEL	131,072
165.50.0.0/15	AS37492	Orange Tunisie	131,072
165.50.0.0/16	AS37492	African Network Information Center	65,536
165.4.0.0/16	AS3741	Woolworths Holdings Limited	65,536
165.119.0.0/16	AS2650	Executive Office Of The President	65,536
165.83.0.0/16	AS3549	National Park Service	65,536
165.117.0.0/16	AS2828	Verizon Business	65,536
165.3.0.0/16	AS327839	Woolworths Holdings Limited	65,536
165.74.0.0/16	AS2152	State of California, Department of Education	65,536
165.237.0.0/16	AS3456	Charter Communications Inc	65,536
165.122.0.0/16	AS3371	WilTel	65,536
165.23.0.0/16	AS11232	Midcontinent Communications	65,536
165.122.0.0/16	AS3376	WilTel	65,536
165.138.0.0/16	AS11686	Indiana Department of Education	65,536
165.228.0.0/16	AS1221	Telstra Limited	65,536
165.208.0.0/16	AS16509	Amazon Technologies Inc.	65,536
165.129.0.0/16	AS16509	Amazon.com, Inc.	65,536
165.94.0.0/16	AS16509	Amazon Technologies Inc.	65,536
165.81.0.0/16	AS16509	Amazon.com, Inc.	65,536
165.234.0.0/16	AS19530	State of North Dakota, ITD	65,536
165.196.0.0/16	AS2152	Los Rios Community College District	65,536
165.120.0.0/16	AS2856	BT Public Internet Service	65,536
165.122.0.0/16	AS3375	WilTel	65,536
165.130.0.0/16	AS10967	The Home Depot Inc.	65,536
165.242.0.0/16	AS2506	Hiroshima City University	65,536
165.239.0.0/16	AS11663	State of Utah	65,536
165.107.0.0/16	AS2642	California Office of Legislative Counsel - Legislative Data Center	65,536
165.166.0.0/16	AS12208	Spirit Communications	65,536
165.66.0.0/16	AS2642	California ASSEMBLY	65,536
165.122.0.0/16	AS3372	WilTel	65,536
165.201.0.0/16	AS3446	State of Kansas	65,536
165.235.0.0/16	AS1226	California Department of Technology	65,536
165.78.0.0/16	AS12302	Vodafone Romania S.A.	65,536
165.139.0.0/16	AS11686	Indiana Department of Education	65,536
165.178.0.0/16	AS16509	Amazon.com, Inc.	65,536
165.113.0.0/16	AS16509	Amazon.com, Inc.	65,536
165.121.0.0/16	AS16509	Amazon.com, Inc.	65,536
165.67.0.0/16	AS16509	Amazon.com, Inc.	65,536
165.247.0.0/16	AS16509	Amazon.com, Inc.	65,536
165.70.0.0/16	AS16509	Amazon.com, Inc.	65,536
165.132.0.0/16	AS131856	Yonsei University	65,536
165.184.0.0/16	AS1761	Texas Health and Human Services Commission	65,536
165.202.0.0/16	AS17759	CLP Power Hong Kong Limited	65,536
165.95.0.0/16	AS1970	Texas A&M University	65,536
165.254.0.0/16	AS20940	NTT America, Inc.	65,536
165.238.0.0/16	AS10770	AT&T Enterprises, LLC	65,536
165.248.0.0/16	AS25640	Hawaii Dept. of Education	65,536
165.254.0.0/16	AS2914	NTT America, Inc.	65,536
165.21.0.0/16	AS3758	SingNet Pte Ltd	65,536

Hosted domains

There are 11 domain names hosted across 7 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
165.123.132.62	michaelbruni.name	3
165.123.141.156	kellerwilliamsbluegrassrealestate.com	2
165.123.34.75	archimedespalimpsest.net	2
165.123.57.141	tracyandwarren.org	1
165.123.30.95	lakadamyali.group	1
165.123.60.122	whartonwrds.com	1
165.123.244.105	darrylpowellmemorialfund.com	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

3,656 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
165.123.37.129	AS55 University of Pennsylvania	`3.58ms` from New York City, US
165.123.40.1	AS55 University of Pennsylvania	`3.62ms` from New York City, US
165.123.27.34	AS55 University of Pennsylvania	`3.60ms` from New York City, US
165.123.98.1	AS55 University of Pennsylvania	`3.52ms` from New York City, US
165.123.54.1	AS55 University of Pennsylvania	`3.89ms` from New York City, US
165.123.175.41	AS55 University of Pennsylvania	`3.49ms` from New York City, US
165.123.23.1	AS55 University of Pennsylvania	`3.85ms` from New York City, US
165.123.208.13	AS55 University of Pennsylvania	`3.56ms` from New York City, US
165.123.46.224	AS55 University of Pennsylvania	`3.30ms` from New York City, US
165.123.99.206	AS55 University of Pennsylvania	`3.41ms` from New York City, US
165.123.3.1	AS55 University of Pennsylvania	`3.79ms` from New York City, US
165.123.229.206	AS55 University of Pennsylvania	`2.74ms` from New York City, US
165.123.57.126	AS55 University of Pennsylvania	`3.70ms` from New York City, US
165.123.189.232	AS55 University of Pennsylvania	`3.73ms` from New York City, US
165.123.241.164	AS55 University of Pennsylvania	`3.38ms` from New York City, US
165.123.85.160	AS55 University of Pennsylvania	`3.31ms` from New York City, US
165.123.140.1	AS55 University of Pennsylvania	`3.96ms` from New York City, US
165.123.76.1	AS55 University of Pennsylvania	`3.76ms` from New York City, US
165.123.146.1	AS55 University of Pennsylvania	`3.87ms` from New York City, US
165.123.112.1	AS55 University of Pennsylvania	`4.13ms` from Secaucus, US
165.123.111.1	AS55 University of Pennsylvania	`3.51ms` from New York City, US
165.123.30.101	AS55 University of Pennsylvania	`3.71ms` from New York City, US
165.123.25.1	AS55 University of Pennsylvania	`3.44ms` from New York City, US
165.123.176.117	AS55 University of Pennsylvania	`3.47ms` from New York City, US
165.123.12.60	AS55 University of Pennsylvania	`3.43ms` from New York 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
77.49.57.96	AS1241 Forthnet	`1.57ms` from Athens, GR
65.62.192.160	AS8011 MongoDB, Inc.	`0.12ms` from Frankfurt am Main, DE
123.23.182.96	AS45899 VNPT Corp	`6.21ms` from Ho Chi Minh City, VN
98.200.106.80	AS7922 Comcast Cable Communications, LLC	`7.70ms` from Houston, US
41.222.143.128	AS37049 South African Digital Villages (Pty) Ltd	`0.07ms` from Johannesburg, ZA
31.55.130.128	AS2856 British Telecommunications PLC	`0.83ms` from London, GB
41.212.125.96	AS15399 Wananchi Group (Kenya) Limited	`4.41ms` from Nairobi, KE
193.248.179.144	AS3215 Orange S.A.	`2.31ms` from Paris, FR
31.189.123.96	AS24608 WIND TRE S.P.A.	`12.41ms` from Rome, IT
32.215.1.176	AS46690 Southern New England Telephone Company and SNET America, Inc.	`10.18ms` from Secaucus, US
211.225.130.128	AS4766 Korea Telecom	`4.69ms` from Seoul, KR
23.14.31.176	AS16625 Akamai Technologies, Inc.	`0.46ms` from Bogota, CO
52.167.163.112	AS8075 Microsoft Corporation	`0.28ms` from Boydton, US
45.169.5.0	AS268080 JMA PROVEDOR DE INTERNET LTDA - ME	`9.67ms` from Brasilia, BR
109.166.140.224	AS8953 Orange Romania S.A.	`19.25ms` from Bucharest, RO
84.0.255.160	AS5483 Magyar Telekom Plc.	`2.34ms` from Budapest, HU
41.69.249.0	AS24835 Vodafone Data	`17.81ms` from Cairo, EG
24.26.134.160	AS10796 Charter Communications Inc	`10.53ms` from Columbus, US
87.160.148.144	AS3320 Deutsche Telekom AG	`6.31ms` from Duesseldorf, DE
112.52.21.144	AS9808 China Mobile Communications Group Co., Ltd.	`6.50ms` from Fuzhou, CN
176.26.225.32	AS5607 Sky UK Limited	`0.89ms` from London, GB
139.216.206.48	AS9443 Vocus Retail	`8.71ms` from Melbourne, AU
193.159.72.240	AS3320 Deutsche Telekom AG	`8.27ms` from Nuernberg, DE
72.239.152.16	AS33363 Charter Communications, Inc	`5.72ms` from Orlando, US
1.227.69.32	AS9318 SK Broadband Co Ltd	`1.72ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f3 -m8 165.123.105.113

traceroute to 165.123.105.113 (165.123.105.113): 8 hops max, 52 byte packets

3 [AS3257] 154.14.160.57 1.654 ms

4 *

5 [AS3356] 4.68.39.217 1.86 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Meppel, NL

On December 6th 2025

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