IP address 153.52.251.55

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Overview

LocationCity, region and country where this IP is located.
San Francisco, California, US
ASNThe autonomous system that announces this IP on the internet.
AS0
TimezoneThe IANA time zone at this IP's location.
America/Los_Angeles
NetworkThe routed network block (CIDR) that contains this IP.
—
CompanyThe organization this IP is assigned to.
Railway
Abuse contactWhere to report spam, attacks or other misuse from this IP.
abuse@railway.app

Associated location

San Francisco

California, United States (US)

Powered byIP Geolocation API

City
San Francisco
District / county
San Francisco County
State / province
California
Country
United States
Postal code
94104
Coordinates
37.78996, -122.40088

United States

37.78996, -122.40088

© Google Maps

Threat score

10/100 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.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

Spam

Detected

This IP has been reported for sending spam.

Abuse contact

Abuse-Role

abuse@railway.app

Powered byIP Abuse Contact API

Name
Abuse-Role
Organization
Railway Corporation
Network
153.52.224.0/19
Country
US
Kind
group
Address
548 Market St, PMB 68956, San Francisco, California 94104-5401 US, San Francisco, CA, 94104-5401, United States
Emails
abuse@railway.app
Phone numbers
+1 415-707-7675

Autonomous system

AS0

Powered byIP to ASN Database

ASN
AS0
Country
—
Domain
—
Regional registry
—
Organization
—
Type
—
Allocated on
—

Organization

—

RIR AS0 No domain Type — Country —

Associated company

Railway

HOSTING · railway.com

Powered byIP to Company Database

Name
Railway
Type
Hosting provider
Domain
railway.com

Network route

No route data

Powered byIP Geolocation API

Hostname
153.52.251.55
Route
—
Connection type
—
Anycast
No
CDN
No
CDN provider
—

Time zone

America/Los_Angeles

2026-10-27 12:00

Powered byTime Zone API

Offset from UTC
-8.0
Standard time zone
Pacific Standard Time
Standard abbreviation
PST
Daylight saving time
Yes
DST savings (hours)
1
Observing DST now
Yes
San Francisco

America/Los_Angeles

UTC-8.0

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" : "153.52.251.55",
  "hostname" : "153.52.251.55",
  "location" : {
    "district" : "San Francisco County",
    "city" : "San Francisco",
    "locality" : "San Francisco",
    "zipcode" : "94104",
    "latitude" : "37.78996",
    "longitude" : "-122.40088",
    "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" : "California",
    "state_code" : "US-CA",
    "accuracy_radius" : "23.989",
    "confidence" : "low",
    "dma_code" : "807",
    "is_eu" : false,
    "country_flag" : "https://ipgeolocation.io/static/flags/us_64.png",
    "geoname_id" : "5357251",
    "country_emoji" : "🇺🇸"
  },
  "country_metadata" : {
    "tld" : ".us",
    "languages" : [ "en-US", "es-US", "haw", "fr" ],
    "calling_code" : "+1"
  },
  "network" : {
    "route" : "",
    "connection_type" : "",
    "is_anycast" : false,
    "is_cdn" : false,
    "cdn_provider_name" : ""
  },
  "currency" : {
    "code" : "USD",
    "name" : "US Dollar",
    "symbol" : "$"
  },
  "asn" : {
    "organization" : "",
    "country" : "",
    "type" : "",
    "domain" : "",
    "rir" : "",
    "as_number" : "AS0",
    "date_allocated" : ""
  },
  "company" : {
    "name" : "Railway",
    "type" : "HOSTING",
    "domain" : "railway.com"
  },
  "security" : {
    "threat_score" : 10,
    "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" : true,
    "is_cloud_provider" : false,
    "cloud_provider_name" : "",
    "is_corporate_gateway" : false,
    "corporate_gateway_type" : "",
    "corporate_gateway_provider_name" : ""
  },
  "abuse" : {
    "route" : "153.52.224.0/19",
    "country" : "US",
    "name" : "Abuse-Role",
    "organization" : "Railway Corporation",
    "kind" : "group",
    "address" : "548 Market St, PMB 68956, San Francisco, California 94104-5401 US, San Francisco, CA, 94104-5401, United States",
    "emails" : [ "abuse@railway.app" ],
    "phone_numbers" : [ "+14157077675" ]
  },
  "time_zone" : {
    "name" : "America/Los_Angeles",
    "offset" : -8.0,
    "offset_with_dst" : -7.0,
    "current_time" : "2026-10-27 12:00:46.551-0700",
    "current_time_unix" : 1.793127646551E9,
    "current_tz_abbreviation" : "PDT",
    "current_tz_full_name" : "Pacific Daylight Time",
    "standard_tz_abbreviation" : "PST",
    "standard_tz_full_name" : "Pacific Standard Time",
    "is_dst" : true,
    "dst_savings" : 1,
    "dst_exists" : true,
    "dst_tz_abbreviation" : "PDT",
    "dst_tz_full_name" : "Pacific Daylight Time",
    "dst_start" : {
      "utc_time" : "2026-03-08 TIME 10:00",
      "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 09:00",
      "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 153.52.251.55.

Who operates 153.52.251.55?

Railway operates AS0, the autonomous system announcing this address. The associated company is Railway.

View ASN API

Why can its location change?

IP location comes from routing, registry and measurement data. It can shift when Railway reassigns the block, so treat San Francisco as an estimate, not a fixed point.

View IP Location API

How do I report abuse?

The listed abuse contact is Abuse-Role. 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=153.52.251.55' \
  --data-urlencode 'include=*'
Response 
{ "ip": "153.52.251.55" }

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Frequently Asked Questions

The latest lookup maps 153.52.251.55 to San Francisco, California, United States. Geolocation is approximate and should be treated as city/region level guidance.
This page currently shows ASN AS0 and company Railway. ASN and company attribution can change as routing and ownership records are updated.
The reported connection type for 153.52.251.55 is not published. This value helps with traffic analytics, abuse prevention, and policy routing decisions.
The current timezone record for 153.52.251.55 is America/Los_Angeles. 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 153.52.251.55.
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.