The WIDE project signed a contract of collaborative research with JPRS and has been measuring deployment ratio of domain authentication since April 2005. JPRS gives us a list of domains under .jp and the WIDE project checks whether or not authentication information exists for each domain.
As of July 2010, approximate deployment ratio of domain authentitaions is:
(With the "Total" below, dividing SPF and DK by MX, respectively)
| Category | Registered | MX | SPF | DK |
|---|---|---|---|---|
| AD(Members of JPNIC) | 276 | 235 | 102 | 6(9) |
| AC(Universities, Technical schools, Incorporated schools) | 3516 | 3310 | 973 | 13(30) |
| CO(Incorporated companies, Limited companies) | 338255 | 316384 | 145714 | 1144(1297) |
| GO(Government organizations, Government-affiliated organizations) | 769 | 593 | 250 | 2(8) |
| OR(Foundation, Aggregate corporation) | 26306 | 24716 | 10254 | 87(104) |
| NE(Network services) | 16795 | 12954 | 3789 | 76(97) |
| GR(Arbitrary organization) | 7752 | 6715 | 2223 | 22(26) |
| ED(Schools including primary, junior and senior high schools) | 4550 | 4192 | 1276 | 5(7) |
| Geographic Type | 2712 | 2270 | 476 | 3(6) |
| General-Use JP Domain Name | 768181 | 536238 | 193786 | 2640(3367) |
| Total | 1170965 | 908742 | 358951 | 3998(4952) |