# IPv6 Prefix /64 Calculator

> IPv6 Prefix /64 Calculator is a paid API for AI agents from ip.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Calculates the /64 network prefix for a given IPv6 address using pure local computation — no network lookups involved.

## Facts

- Endpoint: GET https://ip.intel.rallylive.ca/ip/v6/prefix-64?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ipv6-prefix-64-calculator-6aecf5b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_q-RAtfSZ0N_0VZFyvQA9y

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability ipv6-prefix-64-calculator-6aecf5b6
```

Example prompt: What is the /64 network prefix for the IPv6 address 2001:0db8:85a3:0000:0000:8a2e:0370:7334?

## When to prefer this

Use this endpoint when you need a fast, cheap, purely computational /64 prefix extraction for an IPv6 address and do not require any enrichment data like geolocation or ASN. It is ideal for high-volume network tooling, firewall automation, or routing logic where latency and cost must be minimal and no external lookup is needed.

## Known failure modes

- Invalid or malformed IPv6 address input returns an error
- Missing required input parameter results in a 400-level response
- IPv4 address provided instead of IPv6 returns an error or unexpected result

## How this service works

IPv6 prefix 64: pure calculation on the address, no network call. The /64 network. $0.01 per call.

## Output

Returns the /64 network prefix derived from the provided IPv6 address — specifically the first 64 bits of the address expressed as a network block (e.g. 2001:db8:85a3::/64). The calculation is performed locally with no external network calls.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ipv6-prefix-64-calculator-6aecf5b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ip.intel.rallylive.ca](https://www.zero.xyz/host/ip.intel.rallylive.ca/llms.txt)