IP Scorer.
Check reputation before you trust traffic.

Netbait checks an IPv4 address and returns a reputation score for scanners, botnets, proxies, VPNs, datacenter ranges and suspicious automated activity.

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97% internet coverage
Free API access
Simple to use

An IP address is not just a number. Netbait turns it into a usable risk signal.

Score inputs
0-1

The score endpoint returns a plain decimal value. Use it directly in allow, review, throttle or block logic.

$ {{ scoreTypedCommand }}
{{ scoreOutput }}
Detail lookup

Full IP context from the same address.

The detail endpoint expands the same lookup with source lists, first and last seen dates, company records, abuse contacts, ASN route data, location hints and classification flags.

$ {{ detailTypedCommand }}
{{ detailOutput }}

What Netbait includes

IP reputation score

One public endpoint returns a decimal score from 0 to 1 for an IPv4 address. Keep the policy on your side: allow, log, throttle, challenge or block.

0.0412 example response from the score endpoint

Detailed lookup

Use the detail endpoint when you need ASN, route, organization, location, abuse contact and classification flags.

Public access

Standard score and detail lookups work without authentication. Tokens are only needed for higher rate limits.

Human-readable IP reports

Every checked address can open a public report page with reputation, network ownership and approximate location when available.

Built for teams that need IP context

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Signals

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Actions

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What is an IP scorer?

An IP scorer assigns a risk value to an address using reputation and network intelligence. Instead of relying on a single blocklist, the score gives your system a compact signal that can be combined with your own logs, users and business rules.

Netbait focuses on practical infrastructure signals: known abuse, scanning behavior, suspicious automation, datacenter ranges, proxy and VPN indicators, ASN context, route data and abuse contacts when available.

A score is not a magic verdict. It is a consistent risk signal your application can act on.

A clean score does not guarantee that an address will stay clean forever. Reputation changes as machines are compromised, cleaned, reassigned or reused.

Use it anywhere you handle traffic

The API is plain HTTP. Call it from a backend, firewall worker, signup flow, rate limiter, log pipeline or SOC enrichment job.

backend firewall rate limiter Cloudflare Workers signup flow SIEM edge worker logs AWS Lambda Kafka Datadog Terraform

Call the IP scorer directly

Use /v1/score/{ip} when you only need the risk number. Use /v1/detail/{ip} when you need the full JSON profile.

Read the documentation Try the scorer
$ curl
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Start with public access

Public
0 €

Score and detail lookups without authentication for standard usage.

Higher rate limit
Token

Request a token when the public limit is not enough for your integration.