Summary

  • ARIN's ARIN 58 recap says 24 of 43 substantive comments opposed retiring Port 43 Whois or wanted a much longer transition. ARIN has kept the service running and will consult again.
  • Hollis Kara told the meeting that Port 43 still receives more queries than RDAP. Many appear to come from cloud providers, leaving ARIN unable to identify the people and scripts behind them.

The problem with sending a goodbye letter is knowing the address. At ARIN 58, Communications Director Hollis Kara had to explain why the registry could not confidently mail one to the users of its oldest directory service. An automated Whois query may arrive from a cloud platform; the operator relying on the answer sits somewhere farther back. ARIN sees the platform, not necessarily the script owner.

The original August consultation proposed ending Port 43 Whois on or after 1 January 2029, alongside separate exits for RWhois and Whois-RWS. Four ways of serving registration data cost money and enlarge ARIN's attack surface. RDAP was to become the one maintained standard. The logic was neat. The audience was not.

Kara's 23 October account gives the ugly operating detail. Port 43 query volume still exceeds RDAP's, she said. Many requests land from cloud-level providers, and ARIN cannot trace the final user through them. RDAP clients are not standard tools in many operating-system distributions. A notice can be placed in a Whois reply, but software may discard it before an administrator ever reads it. The unanswered question is painfully practical: whose system stops when the old socket closes?

The opposition was measurable as consultation input, not an election. ARIN counted 24 of 43 substantive comments against retirement or asking for a substantially longer runway. The 21 October outcome withdrew a countdown for Port 43: ARIN will watch RDAP adoption and query traffic, then return to the community. It did not announce a new retirement date.

The other exits continued on separate clocks. RWhois gets a migration tool before its 365-day retirement period starts. The Whois-RWS API waits for RDAP parity and better instructions. Its web interface will run beside an advanced RDAP-search beta for at least six months, according to ARIN's meeting recap. Treating those three services as one switch would conceal the work each user must do.

Kara did not claim a magic way to identify cloud-backed callers. She rejected a proxy in front of Port 43 because it would add another service to maintain. A meeting participant suggested a brief “scream test”; the record presents it as an idea from the floor, not ARIN's plan. The actual decision is less theatrical: keep the door open while the registry learns whether the replacement can serve the people it cannot yet name.

ARIN's public record lacks a versioned breakdown of Port 43 traffic by identifiable downstream client and a tested route to contact those client owners. Those two records would change the outreach calculation. Until then, the person asked to communicate the shutdown has made the strongest argument for delaying it: a notice that never reaches its user is paperwork, not migration.

ARIN originals