All APIs Syndaq ASN

Intelligence API

Know which network owns the IP.

Resolve ASN, organization, announced prefix, and a simple network_type (hosting, isp, education, government, or unknown). One Syndaq API call for datacenter detection and access policies.

At a glance

  • 3 REST endpoints
  • JSON Request & response
  • HTTPS TLS required
  • Free tier available Starting price

Use cases

Where teams use Syndaq ASN

Datacenter detection

Treat hosting ASNs differently from residential ISP traffic at signup or login.

GeoIP companion

Pair ASN context with GeoIP for richer network intelligence in your stack.

Traffic analytics

Roll up events by ASN or network type in your warehouse.

Access policies

Allowlist education/gov networks or challenge hosting ranges.

Integration

Up and running in three steps

1

Get an API key

Subscribe to an ASN plan and copy your as_sec_ secret key.

2

Look up the IP

Pass any public IPv4 or IPv6 address.

3

Use network_type

Branch on hosting vs isp (and more) in your application logic.

Example

Copy, paste, ship

Every response includes a request_id for support correlation. Rate limit and quota headers are returned on authenticated routes so you can backoff gracefully.

Authenticated with your Syndaq secret key over HTTPS. network_type is a heuristic based on organization text—useful for triage, not a legal classification.

Request
curl -s "https://api.syndaq.com/v1/asn/lookup/8.8.8.8" \
  -H "Authorization: Bearer as_sec_YOUR_SECRET_KEY"
Response
{
  "success": true,
  "ip": "8.8.8.8",
  "cached": true,
  "asn": 15169,
  "as_org": "GOOGLE - Google LLC, US",
  "network": "8.8.8.0/24",
  "country_code": "US",
  "network_type": "hosting",
  "request_id": "d4e5f6789012345678901234abcdef01"
}

Reference

API endpoints

Included with your Syndaq ASN plan.

Method Path Description
GET /v1/asn/lookup Lookup ASN and network type by ?ip= query parameter.
GET /v1/asn/lookup/{ip} Lookup ASN and network type for an IP in the URL path.
GET /v1/asn/status Returns plan limits and quota for the authenticated key.

Pricing

Plans for every stage

Transparent limits. Upgrade when your traffic grows—no surprise overages without a plan change.

Starter

Free

Development and light production lookups.

  • 120 requests / minute
  • 10,000 lookups / month
  • Secret key authentication
  • ASN / network type JSON REST API
  • Hosting vs ISP classification
  • Rate limit & quota headers
Get started

Enterprise

monthly
$99.00 USD

High-volume lookups with priority limits.

  • 3,000 requests / minute
  • Unlimited monthly lookups
  • Secret key authentication
  • ASN / network type JSON REST API
  • Hosting vs ISP classification
  • Rate limit & quota headers
Get started

FAQ

Common questions

Send your as_sec_ secret key as a Bearer token in the Authorization header on every request to https://api.syndaq.com.

ASN number, organization name, announced prefix, country code, and network_type (hosting, isp, education, government, or unknown).

Yes. Pass any public IPv4 or IPv6 address—plans include rate limits and monthly quotas for production use.

Ready to integrate Syndaq ASN?

Pick a plan, create your keys in the client area, and start calling the API in minutes.

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