DEPTH
SPF Onion
SPF ONION ANALYZER
Enter a domain name or CIDR range
to trace its SPF include chain
ADD TO DATASET
1. Copy CSV row below
2. Append to spf_records.csv
3. Run: python reload.sh
Node Legend
Secure (-all)
Soft Fail (~all)
Insecure / None
SPF Include Source
SECURITY REPORT
—
Summary
Top DNS-Lookup Offenders
#DomainStatusDNS LookupsIncludes
Most Referenced SPF Providers
#ProviderReferenced By
Status
Score
DNS Lookups
Includes
Domain Not In Dataset
This domain was not found in the Parquet dataset.
Query it live via DNS (Google DNS-over-HTTPS)?
Results are session-only.
⬡
Version
v1.0.2
April 2026
Dataset generated: —
Authors
Jeff Vogelpohl
Email Security Researcher
linkedin.com/in/jeffvogelpohl
Ed Gibbs
VP of Research, WHOISXMLAPI.com
linkedin.com/in/edgibbs
About
SPF Onion Analyzer visualizes the layered complexity of SPF (Sender Policy Framework) include chains across millions of domains — revealing nested trust relationships, misconfigurations, and security risks that traditional tools miss.