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API · /hostcheck-api

Host Check API

degraded 3,304 Subscribers

Check whether a host or website is reachable from dozens of locations around the world as an API, powered by check-host.net. Run an ICMP ping, an HTTP request, a TCP-port connect or a DNS resolution from many countries at once and get a per-node breakdown — reachable or not, response time, resolved IP, HTTP status code or DNS records — plus an aggregate "reachable from X of N nodes". Perfect for answering "is it down for everyone, or just me?", monitoring global uptime and latency, verifying CDN and geo-routing, debugging firewalls and regional blocks, and powering status pages. Also lists every available worldwide check node. No accounts, no agents to install.

#uptime #ping #network #monitoring #host-check #reachability
api.oanor.com/hostcheck-api
Get an API key Try in playground → Contact provider

Machine-readable spec so AI agents can integrate this API.

/api/hostcheck-api/openapi.json
/api/hostcheck-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

degraded
Uptime
79.17%
Server probes · 24h
Avg latency
1143 ms
Server probes · 24h
Subscribers
3,304
active
Total calls
24
last 7 days
status Full status page → · 24 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 3,000 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 3,000 calls/month
  • 2 req/sec
  • Ping, HTTP, TCP, DNS from 5 nodes
  • No credit card
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Starter

€6.90 /month

  • 42,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 42k calls/month
  • 8 req/sec
  • Up to 20 nodes per check
  • Email support
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Pro

€19.90 /month

  • 210,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 210k calls/month
  • 20 req/sec
  • Uptime & status pages
  • Priority support
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Mega

€49.90 /month

  • 1,050,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1.05M calls/month
  • 50 req/sec
  • Monitoring platforms
  • Dedicated SLA
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Built by

P
PremiumApi

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IP Exposure API

See what any host exposes to the internet — as an API over Shodan's free InternetDB. Give it an IPv4/IPv6 address (or a hostname, which is resolved to its IP) and get that host's attack surface: the open ports (annotated with common service names), the products and technologies detected on it (CPEs), its reverse hostnames, Shodan's classification tags, and the known vulnerabilities (CVE identifiers) observed on its services. A dedicated vulnerabilities view returns just the CVEs and whether the host appears vulnerable. It is fast, requires no key, and is built for security, asset-discovery, external attack-surface monitoring and reconnaissance workflows. A network-exposure / attack-surface resource — distinct from IP geolocation (where an address is), the IANA port registry (what a port number means) and CVE databases (what a vulnerability is). Data from Shodan InternetDB (free / non-commercial use).

api.oanor.com/internetdb-api

RIPEstat API

Internet routing and number-resource intelligence as an API, powered by RIPEstat — the open data service of the RIPE NCC, one of the world's five Regional Internet Registries. Answer the questions network engineers, security teams and researchers ask about the public internet: which Autonomous System and prefix does an IP address belong to; what is an AS (its operator/holder name, whether it is currently announced in BGP, its type and registration block); which IPv4 and IPv6 prefixes does an AS announce; who are an AS's BGP neighbours and peers (and how many); who is the abuse-reporting contact for an IP, prefix or ASN, and which RIR is authoritative; and is a prefix correctly originated according to RPKI route-origin validation (valid, invalid or unknown) with the matching ROAs. The data is real-time, drawn from the RIPE NCC's global network of BGP route collectors and the registries. Inputs accept IPv4 and IPv6 addresses, CIDR prefixes and AS numbers (with or without the AS prefix). Ideal for network operations, threat intelligence and abuse handling, BGP and RPKI monitoring, IP reputation and OSINT tooling, and internet research. Data from the RIPE NCC RIPEstat service.

api.oanor.com/ripestat-api

MAC Vendor API

Identify the manufacturer behind any MAC address. Look up a MAC or OUI to get the assigned vendor, its short name and the exact assignment block (/24, /28 or /36) using the official IEEE registry, search the registry by vendor name to find all of a company’s OUIs, or generate random valid test MAC addresses for a given vendor. MAC addresses are accepted in every common format — colon, hyphen, dot or bare hex — and bare OUIs work too. Built on the open IEEE OUI dataset (~57,000 assignments) and served entirely in-memory, so responses are instant and the service is always available. Ideal for network scanning and monitoring, IoT and device identification, security and asset inventory, NAC and devops tooling.

api.oanor.com/macvendor-api

Subnet API

A fast, fully-local IP and subnet calculator: validate IPv4 and IPv6 addresses with type classification (private, public, loopback, link-local, multicast, CGNAT or reserved), compute CIDR subnet details (network, netmask, wildcard, broadcast, first and last host, total addresses and usable hosts, with IPv6 network and range size), check whether an address falls inside a CIDR block, and convert addresses (IPv4 to integer, hex and binary; IPv6 expand and compress). Every endpoint accepts input via the query string or the request body. Pure server-side compute, no third-party upstream, so responses are instant and always available. Ideal for devops, network automation, IPAM, firewall and ACL tooling and cloud infrastructure.

api.oanor.com/subnet-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Host Check API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Host Check API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Host Check API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Host Check API cost?
Host Check API has a free tier with 100 calls / month. Paid plans start at €6.90 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Host Check API GDPR-compliant?
All requests to Host Check API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/hostcheck-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/hostcheck-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/hostcheck-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/hostcheck-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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