Process and timeline for IN-ADDR.ARPA transition

This is the forth of a number of updates regarding the transition of the IN-ADDR.ARPA zone.

ARIN and ICANN have agreed to the following process details for the transition of the IN-ADDR.ARPA DNS zone.

On 16th February at 9am UTC-8:

  • ICANN takes last agreed update from ARIN and publishes the zone via the namservers. The agreed update from ARIN will be the generated zone data for the time stamp “201102160445”.
  • ICANN will disable any further imports from ARIN.
  • Both ARIN and ICANN will confirm zone contents (delegated NS) match between servers and the root servers and signoff by 9.30am UTC-8
  • ICANN to advise VerSign (root server hidden master operator) to pull IN-ADDR.ARPA from ICANN at 10.00am UTC-8
  • ICANN will advise IANA to continue processing of the IN-ADDR.ARPA delegation change
  • ICANN will update //
  • ICANN and ARIN to publish a statement of transition
  • ICANN to publish/update appropriate whois records for * delegations on
  • ICANN to provide public AXFR to  IN-ADDR.ARPA on
  • ICANN to publish IN-ADDR.ARPA zone on the site

During this transition a 48 hour update embargo will be placed on the IN-ADDR.ARPA zone. This will run from0000hrs 16th February UTC-8 to 2400hrs 17th February UTC-8.

Leave a Reply