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DKIM Selector s2 Lookup
x402
DKIM Selector s2 Lookup 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 the DKIM public key for the 's2' selector of a domain by querying s2._domainkey.<domain> via Cloudflare DoH and parses key metadata including type, length, testing flag, and revocation status.
Price / call$0.01
Success—
StatusUnknown
How this service works
DKIM public key for selector "s2" of a domain: looks up s2._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 s2 selector will verify. $0.01 per lookup.
Output
Returns parsed DKIM TXT record details for the s2 selector including: DKIM version (v=), key type (k=), public key length in bits, whether the key is in testing mode, and whether the key has been revoked (empty p= field), plus a confirmation of whether mail signed with the s2 selector will verify.
Example use cases
Pre-deployment email authentication audit
“Before we go live, check the DKIM s2 selector for our domain acmecorp.com — I need to confirm the key is valid, not revoked, and will actually verify mail signed with the s2 selector.”
Diagnosing email deliverability failure
“Our emails signed with the s2 DKIM selector are being rejected — can you look up the s2._domainkey record for sendgrid-customer.io and tell me if the key is revoked or in testing mode?”
Security review of third-party sender
“We're onboarding a new email vendor and they claim to use the s2 DKIM selector on mailer.partnerco.com — can you pull the s2 DKIM public key details and tell me the key length and whether it's properly configured?”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/dkim/s2?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to inspect the 's2' DKIM selector for a domain, particularly for services like Amazon SES rotation keys, custom mailers, or any provider using 's2' as their signing selector. Choose this over generic DNS TXT lookups when you need structured parsing of key type, length, and revocation status rather than the raw TXT string.
Side effects
- Domain has no s2._domainkey TXT record — returns not found or empty result
- Key is revoked (empty p= value) — reported as revoked, mail will not verify
- DNS resolution failure via Cloudflare DoH — network or upstream error
- Malformed TXT record that cannot be parsed — parsing error returned
- Domain does not exist — NXDOMAIN response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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