# Vextorium DNS Propagation Checker

> Vextorium DNS Propagation Checker is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-11).

Checks DNS propagation status for a domain across multiple global resolvers, returning per-resolver responses, TTLs, and whether the record has fully propagated.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/dns-propagation?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-dns-propagation-checker-dc41cd34
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VZCu3uGbBZI5hww8q1pNk

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 vextorium-dns-propagation-checker-dc41cd34 -d '<json body>'
```

Example prompt: Check if the DNS A record for example.com has propagated across all major resolvers like Google, Cloudflare, Quad9, and OpenDNS — tell me what IP each one is returning and whether it's fully propagated.

## When to prefer this

Use this endpoint when you need to check whether a DNS record change has propagated to multiple well-known global resolvers simultaneously. It is ideal for post-deployment verification, diagnosing split-brain DNS issues, or confirming that a newly configured record (A, MX, TXT, etc.) is live worldwide. Prefer this over a simple DNS lookup when you need multi-resolver comparison rather than a single resolver's answer.

## Known failure modes

- Invalid domain format returns an error
- Unsupported record type outside allowed enum fails validation
- Domain does not exist returns NXDOMAIN or empty responses from resolvers
- Network timeout reaching a specific resolver may result in null response for that resolver
- Malformed request body (missing 'domain' field) returns a schema validation error

## How this service works

Check DNS propagation of a record across 8 public resolvers worldwide (Google, Cloudflare, Quad9, OpenDNS, AdGuard...): each answer and TTL and whether they all agree. Use after changing DNS.

## Output

Returns a per-resolver breakdown for the queried domain and record type, including each resolver's name, IP address, the returned DNS response values (e.g. IP addresses), TTL remaining, and a top-level 'propagated' boolean plus 'distinct_responses' count indicating how many unique answers were seen across resolvers.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "domain"
     ],
     "properties": {
      "type": {
       "enum": [
        "A",
        "AAAA",
        "CNAME",
        "MX",
        "NS",
        "TXT",
        "CAA"
       ],
       "type": "string"
      },
      "domain": {
       "type": "string"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": [
      "object",
      "null"
     ],
     "properties": {
      "type": {
       "type": [
        "string",
        "null"
       ]
      },
      "domain": {
       "type": [
        "string",
        "null"
       ]
      },
      "resolvers": {
       "type": [
        "object",
        "null"
       ],
       "properties": {
        "Quad9": {
         "type": [
          "object",
          "null"
         ],
         "properties": {
          "ttl": {
           "type": [
            "number",
            "null"
           ]
          },
          "resolve": {
           "type": [
            "string",
            "null"
           ]
          },
          "response": {
           "type": [
            "array",
            "null"
           ],
           "items": {
            "type": [
             "null",
             "string"
            ]
           }
          }
         }
        },
        "Google": {
         "type": [
          "object",
          "null"
         ],
         "properties": {
          "ttl": {
           "type": [
            "number",
            "null"
           ]
          },
          "resolve": {
           "type": [
            "string",
            "null"
           ]
          },
          "response": {
           "type": [
            "array",
            "null"
           ],
           "items": {
            "type": [
             "null",
             "string"
            ]
           }
   
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "type": "A",
  "domain": "vextorium.com",
  "resolvers": {
   "Quad9": {
    "ttl": 183,
    "resolve": "9.9.9.9",
    "response": [
     "188.114.96.5",
     "188.114.97.5"
    ]
   },
   "Google": {
    "ttl": 300,
    "resolve": "8.8.8.8",
    "response": [
     "188.114.96.5",
     "188.114.97.5"
    ]
   },
   "Level3": {
    "ttl": 223,
    "resolve": "4.2.2.1",
    "response": [
     "104.21.84.73",
     "172.67.188.163"
    ]
   },
   "Yandex": {
    "ttl": 300,
    "resolve": "77.88.8.8",
    "response": [
     "104.21.84.73",
     "172.67.188.163"
    ]
   },
   "AdGuard": {
    "ttl": 270,
    "resolve": "94.140.14.14",
    "response": [
     "188.114.96.0",
     "188.114.97.0"
    ]
   },
   "OpenDNS": {
    "ttl": 300,
    "resolve": "208.67.222.222",
    "response": [
     "188.114.96.5",
     "188.114.97.5"
    ]
   },
   "Control D": {
    "ttl": 183,
    "resolve": "76.76.2.0",
    "response": [
     "188.114.96.5",
     "188.114.97.5"
    ]
   },
   "Cloudflare": {
    "ttl": 177,
    "resolve": "1.1.1.1",
    "response": [
     "188.114.96.5",
     "188.114.97.5"
    ]
   }
  },
  "propagated": false,
  "distinct_responses": 3
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-dns-propagation-checker-dc41cd34/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)