.ein
1 claimant
1 primary
0 secondary
unambiguous primary
SWH popularity
From the SWH-MSR-ARV dataset (Desmazières, Di Cosmo, Lorentz, MSR 2025; file nb_extensions_alphanum.csv) — one row per (ext, year) in the full SWH archive. Case-aggregated. citation.
578
total occurrences
304
since 2019 (52.6%)
1999–2022
years active
Case variants in archive: .ein (530), .EIn (25), .EIN (22), .Ein (1) — aggregated above.
Attribution status
This extension is attributed to Fjolnir as primary by 1 authoritative claim.
Authoritative sources: ✗ Linguist · no claim ✗ Pygments · no claim ✓ Wikidata · Q3481158 ✗ Wikipedia · no claim
Claimants (1)
Languages that list
.ein among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| Fjolnir | wikidata | primary |
SWH-mined examples (0)
No archived examples for .ein in our local mirror yet.