There are 7 DNS servers serving JP zones, which includes .JP, AD.JP--OR.JP, AICHI.JP--YOKOHAMA.JP, and a number of IPv4 inverse lookup zones such as 133.IN-ADDR.ARPA, 112.61.IN-ADDR.ARPA, and 119.221.IN-ADDR.ARPA. E.DNS.JP is one of the 7 DNS servers serving these JP zones.

Since the epoch of Japanese Internet in 1989, WIDE Project has been operating one of the JP DNS servers. Initially the DNS server named as JP-GATE.WIDE.AD.JP had been operated in Yokohama. In 1990, it moved to Fujisawa, Kanagawa. In November 1996, it renamed as NS.WIDE.AD.JP. These servers had served JP zones in conjunction with other zones for many years. In Auguest 2001, IPv6 transport for DNS query/response started by a separate server.

In March 2002, number of improvements had been performed:

In June 2003, in order to provide extra redundancy to servive DNS service in the case of serious disasters in Tokyo, the following changes have made:

Followings are the MRTG graphs measured at the router (Time shown below is in JST or GMT+9, not realtime drawing):

Daily Traffic

Weekly Traffic

E.DNS.JP is operated by WIDE Project .

We thank all ISPs who peer with us in Osaka. We'd like to express special thank to the following bodies for their great contribution more than peering (ascending order of corresponding AS numbers):
IIJ KDDI Biglobe MultiFeed