ACSP Suggestion 2025.5: Show Reassigned Prefix Block on Main Page

Suggestion

Author: Frank Wu   
Submitted On: 20 June 2025

Description: show reassigned prefix block on the main page

Value to Community:

I created RPKI ROA for a /22 not knowing this block had been re-assigned to another entity of my company, it resulted in losing (90%) of this route/prefix on the internet.

it’s operator error on my side. After replay of the incident and trouble-shooting process, I think a little change on the resource main page could’ve helped me to avoid this problem -

  • this /22 prefix was RPKI unknown
  • I checked my network address allocation and the whole /16 belongs to us
  • I DID NOT check the BGP routing table
  • I DID NOT check the details (the + sign) of the /16
  • I created the ROA with my own AS

Is it possible to bring the reassignment information to the main page? if so, I could be alerted earlier.

Timeframe: Not specified

Status: Closed   Updated: 03 July 2025

Tracking Information

ARIN Comment

3 July 2025

Thank you for your suggestion, numbered 2025.5, asking that ARIN show reassigned prefix blocks on the main ROA creation page in ARIN Online.

The BGP intelligence effort that was discussed in a 2024 community consultation and is currently scheduled for development on the 2026 software road map will provide guidance to customers about potential BGP impacts prior to ROA creation.

This suggestion will be closed due to this work already scheduled for development. Thank you for participating in ARIN’s Consultation and Suggestion Process.

Regards,

American Registry for Internet Numbers (ARIN)

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