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DKIM Selector Lookup – ProtonMail
x402
DKIM Selector Lookup – ProtonMail is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Looks up and parses the DKIM public key for the 'protonmail' selector of a given domain, confirming key type, length, testing flag, and revocation status.
Price / call$0.01
Success—
StatusUnknown
How this service works
DKIM public key for selector "protonmail" of a domain: looks up protonmail._domainkey.<domain> (TXT, Cloudflare DoH) and parses v=, k=, key type, public-key length, testing flag and whether the key is revoked (empty p=). Confirms that mail signed with the protonmail selector will verify. $0.01 per lookup.
Output
Returns parsed details of the protonmail._domainkey.<domain> TXT record: v= and k= tag values, key type (e.g. RSA), public-key bit length, whether the testing flag is set, and whether the key is revoked (empty p= field). Confirms whether mail signed with the protonmail selector will pass DKIM verification.
Example use cases
ProtonMail email deliverability audit
“We just set up ProtonMail for ourcompany.com — can you verify the protonmail DKIM selector is properly configured, not revoked, and tell me the key type and length?”
Pre-migration email auth check
“Before we migrate email hosting, check whether acmecorp.com has a working ProtonMail DKIM selector and confirm whether mail signed with it would pass verification.”
Security audit for suspicious domain
“I think suspicious-domain.net might be impersonating a ProtonMail sender — can you look up their protonmail DKIM selector and tell me if the key is valid, revoked, or in test mode?”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/dkim/protonmail?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to verify the ProtonMail DKIM selector (protonmail._domainkey) for a domain, as opposed to other selectors like 'google' or 'default'. Ideal for auditing ProtonMail-hosted email configurations, troubleshooting DKIM signing failures for ProtonMail senders, or checking revocation status of ProtonMail signing keys.
Side effects
- Domain does not have a protonmail._domainkey TXT record — returns not found or empty result
- DNS resolution fails via Cloudflare DoH — network or timeout error
- Domain is invalid or malformed — returns validation error
- Record exists but p= is empty — key is revoked, flagged in response
- Payment not attached or insufficient — returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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