IP range details

131.215.0.0/16

AS31  ·  California Institute of Technology

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Summary

Country United States
Domain caltech.edu
ASN AS31
Registry arin
Hosted IPs 65,536
ID CALTECH-NET

WHOIS Details

NetHandle:      NET-131-215-0-0-1
OrgID:          CIT-4-Z
Parent:         NET-131-0-0-0-0
NetName:        CALTECH-NET
NetRange:       131.215.0.0 - 131.215.255.255
NetType:        allocation
OriginAS:       31
RegDate:        1989-01-19
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:        2024-07-16
OfficePhone:    +1-626-395-3500
Mailbox:        noc@caltech.edu
Source:         ARIN

Hosted domains

There are 130 domain names hosted across 60 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
131.215.239.20 dianagabaldononline.org 21
131.215.68.28 shakewarning.org 9
131.215.167.175 joeshepherd.monster 8
131.215.140.111 caltech.codes 6
131.215.198.54 cosmicexplorations.org 6
131.215.194.134 21cmcosmology.org 4
131.215.66.188 socalgeodetic.org 4
131.215.113.72 gw-openscience.org 4
131.215.76.24 textpresso.com 3
131.215.65.167 lilahbrown.com 3
131.215.167.14 caltech.care 3
131.215.176.71 matthewfeldman.org 3
131.215.166.5 blenderhismeat.com 3
131.215.242.43 brianlau.org 2
131.215.140.234 energyadaptive.net 2
131.215.207.200 ndise.net 2
131.215.165.69 t0rch.org 2
131.215.65.68 tccon.org 2
131.215.34.119 girlfags.com 2
131.215.169.222 elikaye.com 2

Hosted domains API

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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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