By how quickly the record widened

The gap between the year the first registrar ranked a name and the year the last one did.

This measures when registrars began publishing a name, not the name itself moving anywhere. Registrars start publishing in different years — Norway from 1945, Scotland from 2014 — so a long gap often reflects when a source began rather than anything about the name. Single-registrar names have no gap at all and appear in none of these bands.

5,622 records across 6 bands, ordered by shortest gap first.

• Within 2 years

  Names where the first and last registrar to rank them are 0 to 2 years apart.

  262 names

• Across 3 to 5 years

  Names where the first and last registrar to rank them are 3 to 5 years apart.

  338 names

• Across 6 to 10 years

  Names where the first and last registrar to rank them are 6 to 10 years apart.

  552 names

• Across 11 to 20 years

  Names where the first and last registrar to rank them are 11 to 20 years apart.

  1,131 names

• Across 21 to 40 years

  Names where the first and last registrar to rank them are 21 to 40 years apart.

  1,967 names

• Across 41 years or more

  Names where at least 41 years separate the first registrar to rank them from the last.

  1,372 names