FormAssembly

unknown

Uncatalogued — description coming.

435SPF-authorising domains

0.07%of all SPF domains in Tranco top-1M

20distinct TLDs

2026-04-28snapshot date

Historical Share

org — 221 (50.8%)

com — 86 (19.8%)

edu — 67 (15.4%)

org.uk — 16 (3.7%)

ca — 11 (2.5%)

org.au — 9 (2.1%)

net — 3 (0.7%)

com.au — 3 (0.7%)

us — 3 (0.7%)

edu.au — 2 (0.5%)

io — 2 (0.5%)

org.il — 2 (0.5%)

ac.uk — 2 (0.5%)

co.uk — 2 (0.5%)

nl — 1 (0.2%)

ie — 1 (0.2%)

com.ph — 1 (0.2%)

coop — 1 (0.2%)

edu.ar — 1 (0.2%)

bg — 1 (0.2%)

Showing 100 of 435 domains. Sample sorted by length (shortest first).