192.31.43.0/24

AS31 · California Institute of Technology

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Summary

Country	United States
Domain	caltech.edu
ASN	AS31
Registry	ARIN
ID	CALTECH-192-31-43-0

WHOIS Details

NetHandle:      NET-192-31-43-0-1
OrgID:          CIT-4-Z
Parent:         NET-192-0-0-0-0
NetName:        CALTECH-192-31-43-0
NetRange:       192.31.43.0 - 192.31.43.255
NetType:        allocation
RegDate:        1991-03-13
Updated:        2023-08-29
TechHandle:     CI2-ORG-ARIN
AbuseHandle:    CI2-ORG-ARIN
NOCHandle:      CI2-ORG-ARIN
Source:         ARIN


OrgID:          CIT-4-Z
OrgName:        California Institute of Technology
CanAllocate:    
Street:         1200 East California Boulevard
Street:         MS 1-10
City:           Pasadena
State/Prov:     CA
Country:        US
PostalCode:     91125
RegDate:        2023-08-22
Updated:        2023-08-22
OrgAdminHandle: CI2-ORG-ARIN
OrgTechHandle:  CI2-ORG-ARIN
OrgAbuseHandle: CI2-ORG-ARIN
Source:         ARIN


POCHandle:      CI2-ORG-ARIN
IsRole:         Y
LastName:       Caltech Network Operations Center
FirstName:      
Street:         1200 East California Boulevard
Street:         MS 1-10
City:           Pasadena
State/Prov:     CA
Country:        US
PostalCode:     91125
RegDate:        1998-07-29
Updated:        2025-07-22
OfficePhone:    +1-626-395-3500
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 192.31.0.0/16

Range	ASN	Company	Num of IPs
192.31.56.0/22	AS54190	Leads Media, Inc	1,024
192.31.50.0/23	AS46789	Linea Mex, LLC.	512
192.31.142.0/23	AS46696	Sidus Group, LLC	512
192.31.178.0/23	AS393506	MY.COM US, INC.	512
192.31.80.0/24	AS10515	VeriSign Global Registry Services	256
192.31.80.0/24	AS10515	VeriSign Global Registry Services	256
192.31.80.0/24	AS10515	VeriSign Global Registry Services	256
192.31.80.0/24	AS10515	VeriSign Global Registry Services	256
192.31.80.0/24	AS10515	VeriSign Global Registry Services	256
192.31.231.0/24	AS1103	Vrije Universiteit	256
192.31.196.0/24	AS112	DNS-OARC	256
192.31.156.0/24	AS11351	Canisius College	256
192.31.41.0/24	AS11719	Eaton Industrial Data Technologies Corporation	256
192.31.215.0/24	AS13476	Montana State University	256
192.31.103.0/24	AS14428	Pomeroy Technologies LLC	256
192.31.80.0/24	AS10515	VeriSign Global Registry Services	256
192.31.203.0/24	AS23793	National Institute of Advanced Industrial Science and Technology	256
192.31.13.0/24	AS1516	Headquarters, USAISC	256
192.31.22.0/24	AS15404	SAS Institute, Inc.	256
192.31.0.0/24	AS17	Purdue University	256
192.31.237.0/24	AS18719	Ascedia, Inc.	256
192.31.248.0/24	AS1906	Aerojet Ordnance Company	256
192.31.21.0/24	AS195	San Diego Supercomputer Center	256
192.31.110.0/24	AS21759	National Rural Utilities Cooperative Finance Corporation	256
192.31.47.0/24	AS22131	Reach Fiber Network, LLC	256
192.31.153.0/24	AS22213	Salk Institute	256
192.31.190.0/24	AS22233	City National Bank of Florida	256
192.31.198.0/24	AS23793	National Institute of Advanced Industrial Science and Technology	256
192.31.199.0/24	AS23793	National Institute of Advanced Industrial Science and Technology	256
192.31.200.0/24	AS23793	National Institute of Advanced Industrial Science and Technology	256
192.31.222.0/24	AS13767	CommScope Technologies LLC.	256
192.31.202.0/24	AS23793	National Institute of Advanced Industrial Science and Technology	256
192.31.201.0/24	AS23793	National Institute of Advanced Industrial Science and Technology	256
192.31.204.0/24	AS23793	National Institute of Advanced Industrial Science and Technology	256
192.31.205.0/24	AS23793	National Institute of Advanced Industrial Science and Technology	256
192.31.206.0/24	AS23793	National Institute of Advanced Industrial Science and Technology	256
192.31.4.0/24	AS243	L3Harris Technologies, Inc.	256
192.31.74.0/24	AS243	L3Harris Technologies, Inc.	256
192.31.114.0/24	AS254	Micro Focus	256
192.31.46.0/24	AS2552	Washington University	256
192.31.210.0/24	AS26020	Space Telescope Science Institute	256
192.31.23.0/24	AS2611	Department of Computer Science	256
192.31.223.0/24	AS26333	University of New Orleans	256
192.31.192.0/24	AS26708	Center for Computing Sciences	256
192.31.49.0/24	AS26988	Adage Technologies, Inc	256
192.31.158.0/24	AS27064	DoD Network Information Center	256
192.31.104.0/24	AS2738	Shields Health Care Group	256
192.31.2.0/24	AS29	Yale University	256
192.31.236.0/24	AS29	Yale University	256
192.31.254.0/24	AS13513	Alfred University	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
192.31.43.18	AS31 California Institute of Technology	`0.77ms` from Los Angeles, 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
196.151.225.248	AS36935 Vodafone Data	`7.84ms` from Cairo, EG
3.77.39.216	AS16509 Amazon.com, Inc.	`0.37ms` from Frankfurt am Main, DE
121.37.39.168	AS55990 Huawei Cloud Service data center	`1.72ms` from Guangzhou, CN
88.224.246.72	AS9121 Turk Telekomunikasyon Anonim Sirketi	`2.57ms` from Istanbul, TR
61.179.144.136	AS4837 CHINA UNICOM China169 Backbone	`4.47ms` from Jinan, CN
174.127.76.8	AS13213 UK-2 Limited	`0.36ms` from London, GB
208.67.180.200	AS33322 Network Data Center Host, Inc.	`1.90ms` from Los Angeles, US
84.127.191.8	AS6739 VODAFONE ONO, S.A.	`7.69ms` from Madrid, ES
193.237.13.72	AS5378 Vodafone Limited	`5.71ms` from Manchester, GB
151.53.176.40	AS1267 WIND TRE S.P.A.	`4.70ms` from Rome, IT
39.118.52.136	AS9318 SK Broadband Co Ltd	`2.62ms` from Seoul, KR
84.217.80.184	AS8434 Telenor Sverige AB	`0.81ms` from Stockholm, SE
102.26.188.24	AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)	`15.57ms` from Tunis, TN
99.9.54.88	AS7018 AT&T Enterprises, LLC	`6.27ms` from Atlanta, US
73.211.247.24	AS7922 Comcast Cable Communications, LLC	`4.85ms` from Chicago, US
14.254.81.216	AS45899 VNPT Corp	`3.12ms` from Da Nang, VN
108.217.146.104	AS7018 AT&T Enterprises, LLC	`12.61ms` from Dallas, US
86.19.9.56	AS5089 Virgin Media Limited	`4.90ms` from Erith, GB
123.191.129.152	AS4837 CHINA UNICOM China169 Backbone	`14.35ms` from Liaoyang, CN
64.77.234.120	AS25892 VTX Telecom	`0.37ms` from Los Angeles, US
182.35.238.120	AS4134 CHINANET-BACKBONE	`5.39ms` from Qingdao, CN
34.64.111.56	AS396982 Google LLC	`0.09ms` from Seoul, KR
151.237.142.120	AS201005 IT Mania Ltd.	`0.97ms` from Sofia, BG
218.169.36.232	AS3462 Data Communication Business Group	`2.95ms` from Taipei, TW
118.168.103.216	AS3462 Data Communication Business Group	`1.39ms` from Taipei, TW

Traceroute

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

traceroute -a -n -q1 -f3 192.31.43.17

traceroute to 192.31.43.17 (192.31.43.17): 64 hops max, 52 byte packets

3 [AS7922] 50.248.116.137 0.515 ms

4 [AS2152] 204.102.224.2 0.804 ms

5 [AS31] 192.31.43.17 0.826 ms

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On December 28th 2025

What are IP address ranges?

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