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$ man ip-asn

/ip-asn

PRICE / CALL
$0.001
USDC · base mainnet · scheme: exact
METHOD
POST
CLUSTER
webprobe
CATEGORY
uncategorized
STATUS
● live
NAME
ip-asn — looks up asn and geolocation for any ipv4 or ipv6 address: asn number, asn org, isp, country, region, city, postal, latitude/longitude, a…
SYNOPSIS
POST https://x402.agentutility.ai/ip-asn
     Content-Type: application/json
     X-PAYMENT:    <signed-transferWithAuthorization>

     { ... }
↳ first call → 402 Payment Required. Sign USDCtransferWithAuthorization, retry with theX-PAYMENT header.
DESCRIPTION

Looks up ASN and geolocation for any IPv4 or IPv6 address: ASN number, ASN org, ISP, country, region, city, postal, latitude/longitude, and timezone. Primary backend: ipapi.co (1k req/day free); fallback: ip-api.com (45 req/min free). Both are free public APIs with no auth. Use it as an IP-to-ASN, IP geolocation, IP-to-ISP lookup, WHOIS for IP, or cloud-provider attribution tool.

INPUT — request schema
propertytypedescriptionreq?
ipstringIPv4 or IPv6 address.required
OUTPUT — response shape
fieldtypedescription
ipstringEchoes back the IPv4 or IPv6 address that was looked up.
asnstringAutonomous System Number announcing the prefix (e.g. AS15169).
asn_orgstringOrganization name registered to that ASN (e.g. Google LLC, Cloudflare Inc).
country_codestringISO 3166-1 alpha-2 country code for the IP (e.g. US, DE, JP).
countrystringFull country name geolocated for the IP.
regionstringState, province, or top-level administrative region for the IP.
citystringCity name geolocated for the IP.
postalstringPostal or ZIP code geolocated for the IP.
latitudestringApproximate latitude of the IP in decimal degrees as a string.
longitudestringApproximate longitude of the IP in decimal degrees as a string.
timezonestringIANA timezone name for the IP's location (e.g. America/Los_Angeles).
sourcestringUpstream backend that served the lookup: ipapi.co (primary) or ip-api.com (fallback).
EXAMPLES — two ways to call
EXAMPLE 1 · curl
curl -X POST https://x402.agentutility.ai/ip-asn \
  -H 'Content-Type: application/json' \
  -d '{ }'
first response = 402 Payment Required with payment requirements; sign + retry with X-PAYMENT.
EXAMPLE 2 · mcp
# Install the MCP package for this endpoint's cluster
npx -y @agentutility/mcp-<cluster>

# Required: EVM private key with USDC on Base
export X402_PRIVATE_KEY=0x...

# Then call the ip-asn tool from your MCP-aware agent.
MCP server handles payment automatically — your coding agent just calls the tool by name.
METADATA
tags
web-probeip-lookupgeolocationasnwhoisispip-intelligence
methods
POST
cluster
webprobe
price
$0.001 USDC per call
ADJACENT — other endpoints in webprobe
endpointdescriptionprice
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hn-searchSearches 30M+ Hacker News stories and comments via the public Algolia HN index.$0.001
qr-generatorGenerates PNG or SVG QR codes from text, URLs, vCards, WiFi strings, and plain text with configurable size, margin, colors, and error cor…$0.001
qr-makerGenerates a scannable QR code from any text input: a URL, vCard, WiFi join string, or plain text.$0.001
keyword-suggestKeyword and autocomplete suggestions for any seed query.$0.002
crates-io-statsFetches the public crates.io API record for a Rust crate and returns description, license, repository, homepage, documentation, keywords,…$0.003
crypto-news-apiReturns recent cryptocurrency headline metadata and sentiment.$0.003
homoglyph-checkDetects Unicode lookalike characters that impersonate ASCII Latin letters, a common phishing-domain trick.$0.003
SEE ALSO
agentutility · webprobe · x402 · mcp · llms.txt · registry.json · bazaar.x402.org