1. All IP Ranges
  2. 192.0.0.0/8
  3. 192.31.0.0/16
  4. AS31  | 192.31.43.0/24

192.31.43.0/24

AS31  ·  California Institute of Technology

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

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:        noc@caltech.edu
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
192.31.80.0/24 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
192.31.254.0/24 AS13513 Alfred University 256
192.31.80.0/24 AS10515 VeriSign Global Registry Services 256
192.31.201.0/24 AS23793 National Institute of Advanced Industrial Science and Technology 256
192.31.222.0/24 AS13767 CommScope Technologies LLC. 256
192.31.103.0/24 AS14428 Pomeroy Technologies LLC 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
192.31.215.0/24 AS13476 Montana State University 256
192.31.200.0/24 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
192.31.202.0/24 AS23793 National Institute of Advanced Industrial Science and Technology 256
192.31.203.0/24 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
192.31.41.0/24 AS11719 Eaton Industrial Data Technologies Corporation 256

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address ASN Details
192.31.43.17 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
77.165.191.152 AS1136 KPN B.V. 0.92ms from Amsterdam, NL
186.68.193.88 AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC) 7.86ms from Guayaquil, EC
43.155.77.40 AS132203 Tencent Building, Kejizhongyi Avenue 0.40ms from Hong Kong, HK
184.120.62.184 AS212465 Comcast International Holdings UK Limited 12.46ms from London, GB
176.191.237.56 AS5410 Bouygues Telecom SA 7.16ms from Marseille, FR
44.210.187.184 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
201.246.140.8 AS7418 TELEFÓNICA CHILE S.A. 5.38ms from Santiago, CL
47.37.55.56 AS33588 Charter Communications LLC 18.43ms from Seattle, US
125.176.85.24 AS17858 LG POWERCOMM 1.69ms from Seoul, KR
61.33.215.216 AS3786 LG DACOM Corporation 3.61ms from Seoul, KR
39.27.145.104 AS4766 Korea Telecom 2.20ms from Seoul, KR
14.69.98.24 AS4766 Korea Telecom 4.93ms from Seoul, KR
84.252.105.24 AS207517 Hrvatski autoklub 0.36ms from Zagreb, HR
117.160.31.152 AS24445 Henan Mobile Communications Co.,Ltd 3.05ms from Zhengzhou, CN
209.12.52.232 AS32166 Troutman Pepper Locke LLP 0.25ms from Atlanta, US
207.106.224.248 AS7029 Windstream Communications LLC 0.30ms from Atlanta, US
65.48.208.104 AS14813 Columbus Telecommunications (Barbados) Limited 5.33ms from Bridgetown, BB
179.36.145.40 AS22927 Telefonica de Argentina 2.24ms from Buenos Aires, AR
113.255.160.72 AS9304 HGC Global Communications Limited 1.50ms from Hong Kong, HK
2.99.21.248 AS13285 TalkTalk Communications Limited 1.62ms from London, GB
24.41.31.24 AS7029 Windstream Communications LLC 0.37ms from San Jose, US
210.105.44.216 AS4766 Korea Telecom 1.21ms from Seoul, KR
95.204.51.200 AS3301 Telia Company AB 18.31ms from Stockholm, SE
36.227.123.184 AS3462 Data Communication Business Group 1.10ms from Taipei, TW
67.193.63.72 AS7992 Cogeco Connexion Inc. 6.61ms from Toronto, CA

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
4 [AS2152] 204.102.224.2 0.406 ms
5 [AS31] 192.31.43.17 0.867 ms
Measurement taken from IPinfo ProbeNet in Los Angeles, US
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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs