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SPF Record Flattener
x402
SPF Record Flattener is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Recursively expands a domain's SPF includes and redirects into a flat list of authorized IPv4/IPv6 ranges, returning a single flattened SPF record.
Price / call$0.01
Success—
StatusUnknown
How this service works
SPF flattener: recursively expands a domain's SPF includes and redirects into the final list of authorised IPv4/IPv6 ranges and returns a flattened record. Fix the 10-lookup limit or audit exactly which networks may send mail as the domain. $0.01 per domain.
Output
A flattened SPF record containing the complete, deduplicated list of authorized IPv4 and IPv6 CIDR ranges derived from recursively expanding all SPF `include:` mechanisms and `redirect=` modifiers for the queried domain, along with the synthesized flat SPF TXT record string.
Example use cases
Fix SPF 10-lookup limit
“Our domain acme.com keeps hitting the SPF 10-lookup limit and emails are failing — can you flatten our SPF record so I can see all the final IP ranges and build a single flat record that won't exceed the limit?”
Audit outbound mail senders
“I need to audit exactly which IP networks and ranges are allowed to send email as our domain brandco.com — can you expand all the SPF includes and give me the full flattened list?”
Investigate third-party sender permissions
“We just onboarded a new ESP and I want to verify which networks are actually authorized to send as newsletter.mybrand.com — can you recursively resolve the SPF record and show me all authorized IPv4 and IPv6 ranges?”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/dns/spf-flattenWhen to prefer
Use this endpoint when you need to resolve the full effective set of IP addresses authorized by a domain's SPF policy, especially when diagnosing SPF PermError caused by exceeding the 10-lookup limit, auditing third-party sender permissions, or generating a simplified flat SPF record. Prefer this over manual DNS lookups or generic DNS query tools when you need recursive expansion with deduplication across includes and redirects in a single API call.
Side effects
- Domain has no SPF record — returns empty or error response
- Circular SPF includes causing infinite loop — endpoint should detect and break
- Domain does not exist or DNS resolution fails — DNS NXDOMAIN error
- SPF record is malformed or unparseable — parse error returned
- Exceeds recursive depth for deeply nested includes — may return partial results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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