131.215.220.123

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Summary

IP address summary information
Location	Pasadena, California, US
ASN	AS31 — California Institute of Technology
Hostname	booth.iperf.caltech.edu
Range	131.215.0.0/16
Company	California Institute of Technology
Hosted domains	0
Privacy	False
Anycast	False
AS Type	education
Abuse contact	noc@caltech.edu

IP Geolocation

IP address geolocation details
Field	Value
City	Pasadena
State	California
Country	United States
Postal	91101
Local time	07:08 PM, Sunday, September 27, 2026
Timezone	America/Los_Angeles
Coordinates	34.1478 N, 118.1445 W

Location Evidence

We have confirmed the location of this IP address with active measurement data

$ ping 131.215.220.123

PING 131.215.220.123 (131.215.220.123): 56 data bytes

64 bytes from 131.215.220.123: icmp_seq=0 ttl=58 time=1.015 ms

Measurement taken from

IPinfo ProbeNet in █████, █████

On September 21, 2026

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Anonymization

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ASN

AS31 — California Institute of Technology

Domaincaltech.edu
ASN TypeEducation
Route131.215.0.0/16

Company

California Institute of Technology

Abuse

US, CA, Pasadena, 1200 East California Boulevard, MS 1-10, 91125

+1-626-395-3500

noc@caltech.edu

NameCaltech Network Operations Center

Network131.215.0.0/16

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