Max domain test page

Domain

This site maintains a real, public example of a DNS boundary case: a single label at the maximum length permitted by DNS standards.

Homepage URL:

https://ohthegreenandredofmayoicanseeitstillitssoftandcraggyboglandsits.ie/

URL test cases

Use these for validators and parsers.

Valid:
https://ohthegreenandredofmayoicanseeitstillitssoftandcraggyboglandsits.ie/

Trailing dot:
https://ohthegreenandredofmayoicanseeitstillitssoftandcraggyboglandsits.ie./

Subdomain:
https://a.ohthegreenandredofmayoicanseeitstillitssoftandcraggyboglandsits.ie/

Invalid (example 64 char label):
https://ohthegreenandredofmayoicanseeitstillitssoftandcraggyboglandsitss.ie/
      

Email test cases

Useful for form validation and SMTP edge cases.

user@ohthegreenandredofmayoicanseeitstillitssoftandcraggyboglandsits.ie
      

Things to test: address validation, logging, database schema length, SPF and DMARC alignment behaviour.

Database boundary checks

Common assumptions to verify:

Label storage: VARCHAR(63)
Domain storage: VARCHAR(255)
URL fields: do not truncate
Validation: do not reject valid 63 char labels
      

About

This is an independent cultural and technical project maintained as a stable reference input for the public web.