IP address 18.3.15.134

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Overview

LocationCity, region and country where this IP is located.
Cambridge, Massachusetts, US
ASNThe autonomous system that announces this IP on the internet.
AS3 — Massachusetts Institute of Technology
TimezoneThe IANA time zone at this IP's location.
America/New_York
NetworkThe routed network block (CIDR) that contains this IP.
18.3.15.0/24
CompanyThe organization this IP is assigned to.
Massachusetts Institute of Technology
Abuse contactWhere to report spam, attacks or other misuse from this IP.
arin-mit-security@mit.edu

Associated location

Cambridge

Massachusetts, United States (US)

Powered byIP Geolocation API

City
Cambridge
District / county
Middlesex County
State / province
Massachusetts
Country
United States
Postal code
—
Coordinates
42.36492, -71.09862

United States

42.36492, -71.09862

© Google Maps

Threat score

0/100 Low risk

Powered byIP Security API

Flags detected

  • AnonymousTraffic from this IP hides its real origin (VPN, proxy or Tor).Not Detected
  • Known AttackerThis IP has been seen in attacks such as brute force, scanning or exploits.Not Detected
  • SpamThis IP has been reported for sending spam.Not Detected
  • TorThis IP is a Tor exit node.Not Detected
  • ProxyThis IP is an open, public or commercial proxy.Not Detected
    Residential ProxyA home or mobile connection resold as a proxy exit.Not Detected
  • BotAutomated traffic such as crawlers or scrapers comes from this IP.Not Detected
    Known Good BotThis bot is a known, legitimate crawler, such as a search engine.Not Detected
  • VPNThis IP belongs to a VPN service.Not Detected
  • Cloud ProviderThis IP belongs to a cloud or hosting provider's data center.Not Detected
  • Corporate GatewayA shared egress gateway used by a company's network.Not Detected
  • RelayThis IP is a relay exit, such as iCloud Private Relay.Not Detected

No anonymity signals

This IP is not flagged as an attacker, spam source, Tor exit, VPN, proxy, relay, bot, cloud provider or corporate gateway.

Abuse contact

MIT Network Security

arin-mit-security@mit.edu

Powered byIP Abuse Contact API

Name
MIT Network Security
Organization
Massachusetts Institute of Technology
Network
18.0.0.0/11
Country
US
Kind
group
Address
304 Vassar Street, W92-167, Cambridge, MA, 02139, United States
Emails
arin-mit-security@mit.edu
Phone numbers
+1 617-324-1782

Autonomous system

AS3

Massachusetts Institute of Technology

Powered byIP to ASN Database

ASN
AS3
Country
US
Domain
mit.edu
Regional registry
ARIN
Organization
Massachusetts Institute of Technology
Type
Education
Allocated on
—

Organization

Massachusetts Institute of Technology

AS3 mit.edu Education US

Associated company

Massachusetts Institute of Technology

EDUCATION · mit.edu

Powered byIP to Company Database

Name
Massachusetts Institute of Technology
Type
Education
Domain
mit.edu

Network route

18.3.15.0/24

Powered byIP Geolocation API

Hostname
18.3.15.134
Route
18.3.15.0/24
Connection type
—
Anycast
No
CDN
No
CDN provider
—

Time zone

America/New_York

2026-10-22 19:09

Powered byTime Zone API

Offset from UTC
-5.0
Standard time zone
Eastern Standard Time
Standard abbreviation
EST
Daylight saving time
Yes
DST savings (hours)
1
Observing DST now
Yes
Cambridge

America/New_York

UTC-5.0

User agent string

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

Powered byUser Agent API

  • BrowserClaudeBotver. 1.0
  • EngineClaudeBotver. 1.0
  • Operating systemCloud
  • DeviceRobotAnthropic ClaudeBot
  • ArchitectureUnknown
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Response 
{
  "ip" : "18.3.15.134",
  "hostname" : "18.3.15.134",
  "location" : {
    "district" : "Middlesex County",
    "city" : "Cambridge",
    "locality" : "Neighborhood Four",
    "zipcode" : "",
    "latitude" : "42.36492",
    "longitude" : "-71.09862",
    "continent_code" : "NA",
    "continent_name" : "North America",
    "country_code2" : "US",
    "country_code3" : "USA",
    "country_name" : "United States",
    "country_name_official" : "United States of America",
    "country_capital" : "Washington, D.C.",
    "state_prov" : "Massachusetts",
    "state_code" : "US-MA",
    "accuracy_radius" : "5.606",
    "confidence" : "high",
    "dma_code" : "",
    "is_eu" : false,
    "country_flag" : "https://ipgeolocation.io/static/flags/us_64.png",
    "geoname_id" : "4933669",
    "country_emoji" : "🇺🇸"
  },
  "country_metadata" : {
    "tld" : ".us",
    "languages" : [ "en-US", "es-US", "haw", "fr" ],
    "calling_code" : "+1"
  },
  "network" : {
    "route" : "18.3.15.0/24",
    "connection_type" : "",
    "is_anycast" : false,
    "is_cdn" : false,
    "cdn_provider_name" : ""
  },
  "currency" : {
    "code" : "USD",
    "name" : "US Dollar",
    "symbol" : "$"
  },
  "asn" : {
    "organization" : "Massachusetts Institute of Technology",
    "country" : "US",
    "type" : "EDUCATION",
    "domain" : "mit.edu",
    "rir" : "ARIN",
    "as_number" : "AS3",
    "date_allocated" : ""
  },
  "company" : {
    "name" : "Massachusetts Institute of Technology",
    "type" : "EDUCATION",
    "domain" : "mit.edu"
  },
  "security" : {
    "threat_score" : 0,
    "is_tor" : false,
    "is_proxy" : false,
    "proxy_provider_names" : [ ],
    "proxy_confidence_score" : 0,
    "proxy_last_seen" : "",
    "is_residential_proxy" : false,
    "is_vpn" : false,
    "vpn_provider_names" : [ ],
    "vpn_confidence_score" : 0,
    "vpn_last_seen" : "",
    "is_relay" : false,
    "relay_provider_name" : "",
    "is_anonymous" : false,
    "is_known_attacker" : false,
    "is_bot" : false,
    "bot_confidence_score" : 0,
    "bot_operator_name" : "",
    "bot_type" : "",
    "is_known_good_bot" : false,
    "bot_last_seen" : "",
    "is_spam" : false,
    "is_cloud_provider" : false,
    "cloud_provider_name" : "",
    "is_corporate_gateway" : false,
    "corporate_gateway_type" : "",
    "corporate_gateway_provider_name" : ""
  },
  "abuse" : {
    "route" : "18.0.0.0/11",
    "country" : "US",
    "name" : "MIT Network Security",
    "organization" : "Massachusetts Institute of Technology",
    "kind" : "group",
    "address" : "304 Vassar Street, W92-167, Cambridge, MA, 02139, United States",
    "emails" : [ "arin-mit-security@mit.edu" ],
    "phone_numbers" : [ "+16173241782" ]
  },
  "time_zone" : {
    "name" : "America/New_York",
    "offset" : -5.0,
    "offset_with_dst" : -4.0,
    "current_time" : "2026-10-22 19:09:40.208-0400",
    "current_time_unix" : 1.792710580208E9,
    "current_tz_abbreviation" : "EDT",
    "current_tz_full_name" : "Eastern Daylight Time",
    "standard_tz_abbreviation" : "EST",
    "standard_tz_full_name" : "Eastern Standard Time",
    "is_dst" : true,
    "dst_savings" : 1,
    "dst_exists" : true,
    "dst_tz_abbreviation" : "EDT",
    "dst_tz_full_name" : "Eastern Daylight Time",
    "dst_start" : {
      "utc_time" : "2026-03-08 TIME 07:00",
      "duration" : "+1.00H",
      "gap" : true,
      "date_time_after" : "2026-03-08 TIME 03:00",
      "date_time_before" : "2026-03-08 TIME 02:00",
      "overlap" : false
    },
    "dst_end" : {
      "utc_time" : "2026-11-01 TIME 06:00",
      "duration" : "-1.00H",
      "gap" : false,
      "date_time_after" : "2026-11-01 TIME 01:00",
      "date_time_before" : "2026-11-01 TIME 02:00",
      "overlap" : true
    }
  },
  "user_agent" : {
    "user_agent_string" : "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
    "name" : "ClaudeBot",
    "type" : "Robot",
    "version" : "1.0",
    "version_major" : "1",
    "device" : {
      "name" : "Anthropic ClaudeBot",
      "type" : "Robot",
      "brand" : "Anthropic",
      "cpu" : "Unknown"
    },
    "engine" : {
      "name" : "ClaudeBot",
      "type" : "Robot",
      "version" : "1.0",
      "version_major" : "1"
    },
    "operating_system" : {
      "name" : "Cloud",
      "type" : "Cloud",
      "version" : "??",
      "build" : "??",
      "version_major" : "??"
    }
  }
}

Evaluation Checklist

Behind the address

What the data tells you about 18.3.15.134.

Who operates 18.3.15.134?

Massachusetts Institute of Technology operates AS3, the autonomous system announcing this address. The associated company is Massachusetts Institute of Technology; the reported network is 18.3.15.0/24.

View ASN API

Why can its location change?

IP location comes from routing, registry and measurement data. It can shift when Massachusetts Institute of Technology reassigns the block, so treat Cambridge as an estimate, not a fixed point.

View IP Location API

How do I report abuse?

The listed abuse contact is MIT Network Security. Include the source IP, timestamps with a timezone, and relevant logs so the contact can investigate.

View Abuse Contact API

For developers

The same data. One API request.

Add IP location, network, and security data to your application.

cURL 
curl --get 'https://api.ipgeolocation.io/v3/ipgeo' \
  --data-urlencode 'apiKey=YOUR_API_KEY' \
  --data-urlencode 'ip=18.3.15.134' \
  --data-urlencode 'include=*'
Response 
{ "ip": "18.3.15.134" }

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Frequently Asked Questions

The latest lookup maps 18.3.15.134 to Cambridge, Massachusetts, United States. Geolocation is approximate and should be treated as city/region level guidance.
This page currently shows ASN AS3 and company Massachusetts Institute of Technology. ASN and company attribution can change as routing and ownership records are updated.
The reported connection type for 18.3.15.134 is not published. This value helps with traffic analytics, abuse prevention, and policy routing decisions.
The current timezone record for 18.3.15.134 is America/New_York. Teams commonly use this signal to localize timestamps, notifications, and fraud models.
IP intelligence is dynamic. Routing, ASN ownership, company names, and security posture can change over time, so this page should be treated as a point-in-time lookup for 18.3.15.134.
Use the JSON response on this page for testing, then move to production API workflows with structured fields for geolocation, network, ASN, security, abuse, and timezone data. Read documentation.