B Evidence Grade B Graded accuracy verified by the review judge Safe to Cite Current

4.8%

4.8% -- share of spf domains exceeding 10 dns lookup limit for SPF-enabled domains (2026)

Name: Share Of Spf Domains Exceeding 10 Dns Lookup Limit Statistics
Creator: Lighthouse Intelligence
Published: 2026-10-02

2026 · DMARCguard

4.8% of SPF-enabled domains exceed the 10-lookup limit.

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Attribution: DMARCguard View source

Lighthouse Research Team

Last verified: 2026-10-02 · How we verify data →

Source verified Evidence graded

Value

4.8%

Unit

Percentage

Data Vintage

2026

Entity

SPF-enabled domains

Geography

Global

Evidence Quality

Strong, reliable evidence

Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.

61/100 confidence

Single source - not yet corroborated

Score breakdown

Extraction

Source Trust

Citation Chain

Independence

Methodology

Freshness

Source

DMARCguard Primary Tier B

https://dmarcguard.io/tools/spf-checker/ ↗

Confidence: 53/100 Vintage: 2026 Channel: Deep Crawl

Source Article

SPF Record Check: Validate Syntax, Catch Errors | DMARCguard

SPF Record Checker Free SPF checker. Validate your SPF record against RFC 7208, parse every mechanism, count its DNS lookups, and catch PermError before receivers do. No signup. What is SPF? Sender Policy Framework (SPF) is an email authentication protocol defined in RFC 7208. It allows domain owner…

Original Research

DMARCguard · Original study ↗

Methodology

SPF Supply Chain 2026 study by DMARCguard; methodology not detailed

Methodology documented

Segmentation

IndustryMedia RegionGlobal RoleAll marketers

Cite this stat

Plain Text

SPF-enabled domains: 4.8% share of spf domains exceeding 10 dns lookup limit. Source: DMARCguard (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/spf-domains-exceed-10-lookup-limit-2026

HTML Embed

<blockquote cite="https://lighthousedata.io/data/spf-domains-exceed-10-lookup-limit-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>4.8%</strong> -- share of spf domains exceeding 10 dns lookup limit for SPF-enabled domains<br><small>Source: DMARCguard (2026) · <a href="https://lighthousedata.io/data/spf-domains-exceed-10-lookup-limit-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>

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