IONOS (sender)

mailbox 🇩🇪 DE

IONOS hosted-email outbound SPF.

3,333SPF-authorising domains

0.535%of all SPF domains in Tranco top-1M

96distinct TLDs

2026-04-28snapshot date

TLD Distribution (top 30 of 96)

com — 1,357 (40.7%)

de — 830 (24.9%)

co.uk — 176 (5.3%)

org — 162 (4.9%)

fr — 162 (4.9%)

net — 140 (4.2%)

es — 108 (3.2%)

eu — 46 (1.4%)

info — 30 (0.9%)

org.uk — 23 (0.7%)

io — 23 (0.7%)

it — 20 (0.6%)

at — 18 (0.5%)

ca — 17 (0.5%)

online — 16 (0.5%)

mx — 15 (0.5%)

com.mx — 13 (0.4%)

cloud — 11 (0.3%)

ai — 10 (0.3%)

app — 10 (0.3%)

uk — 9 (0.3%)

tv — 8 (0.2%)

me — 7 (0.2%)

shop — 7 (0.2%)

biz — 7 (0.2%)

co — 6 (0.2%)

club — 5 (0.2%)

dev — 5 (0.2%)

ch — 4 (0.1%)

us — 4 (0.1%)

Showing 100 of 3,333 domains. Sample sorted by length (shortest first).