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California Institute of Technology logo

California Institute of Technology

🇺🇸 United States

The ASN (Autonomous System Number) is a unique number assigned to an autonomous system, used to identify the network. ASN

AS31

The RIR (Regional Internet Registry) is the organization responsible for managing ASN allocation in a specific region. RIR

ARIN

The type of ASN. Can be business, isp, hosting, government, or education. Type

education

Website

caltech.edu

Related ASNs have the same name or website. Related

AS14940 AS32361 AS40189

IPv4 CIDRs

12

IPv4 addresses

134144

IPv6 CIDRs

1

IPv6 addresses

1

Upstreams are networks that provide transit to this ASN. Upstreams (3)

AS2152 CENIC - CalREN logo CENIC - CalREN
AS13335 Cloudflare, Inc. logo Cloudflare, Inc.
AS226 Los Nettos logo Los Nettos

Peers are networks that exchange traffic with this ASN. Peers (4)

AS226 Los Nettos logo Los Nettos
AS13335 Cloudflare, Inc. logo Cloudflare, Inc.
AS2152 CENIC - CalREN logo CENIC - CalREN
AS2153 CENIC logo CENIC

IPv6 CIDRs (1)

2607:f520::/32

Location

City

Pasadena

Country

🇺🇸 United States

Coordinates

34.14778, -118.14452

Timezone

America/Los_Angeles

We transparently share the different sources used to determine a likely location for this IP address. Source

whois

Abuse

Email

noc@caltech.edu

Phone

+1-626-395-3500

Query via the API View API documentation

curl iplib.re/AS31

JSON response

{
  "network": {
    "rir": "ARIN",
    "asn": 31,
    "name": "California Institute of Technology",
    "type": "education",
    "website": "caltech.edu",
    "related": [
      14940,
      32361,
      40189
    ]
  },
  "connectivity": {
    "upstreams": [
      2152,
      13335,
      226
    ],
    "peers": [
      226,
      13335,
      2152,
      2153
    ]
  },
  "location": {
    "latitude": 34.14778,
    "longitude": -118.14452,
    "country": "US",
    "city": "Pasadena",
    "source": "whois",
    "timezone": "America/Los_Angeles"
  },
  "abuse": {
    "email": "noc@caltech.edu",
    "phone": "+1-626-395-3500"
  },
  "ipv4": {
    "ranges": [
      "131.215.0.0/16",
      "131.215.229.0/24",
      "131.215.230.0/24",
      "131.215.234.0/24",
      "131.215.239.0/24"
    ],
    "cidrs": 12,
    "ips": 134144
  },
  "ipv6": {
    "ranges": [
      "2607:f520::/32"
    ],
    "cidrs": 1,
    "ips": 1
  }
}