Firebase (Google)

unknown

Uncatalogued — description coming.

1,731SPF-authorising domains

0.278%of all SPF domains in Tranco top-1M

174distinct TLDs

2026-04-28snapshot date

Historical Share

com — 883 (51.0%)

ai — 95 (5.5%)

io — 87 (5.0%)

app — 61 (3.5%)

org — 45 (2.6%)

net — 45 (2.6%)

co — 39 (2.3%)

com.br — 31 (1.8%)

jp — 27 (1.6%)

de — 21 (1.2%)

com.au — 18 (1.0%)

co.uk — 14 (0.8%)

ca — 13 (0.8%)

fr — 12 (0.7%)

in — 11 (0.6%)

it — 10 (0.6%)

me — 9 (0.5%)

tech — 7 (0.4%)

gg — 7 (0.4%)

eu — 6 (0.3%)

tv — 6 (0.3%)

nl — 5 (0.3%)

ro — 5 (0.3%)

cz — 5 (0.3%)

so — 5 (0.3%)

dk — 4 (0.2%)

pl — 4 (0.2%)

diet — 4 (0.2%)

cloud — 4 (0.2%)

ch — 4 (0.2%)

Showing 100 of 1,731 domains. Sample sorted by length (shortest first).