CLI tool to check domain registration expiration dates

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David Segonds b0abcfeb92 Parallelize domain checks - Run checkDomain calls concurrently with goroutines + WaitGroup Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>		2026-02-25 21:28:28 +01:00
.gitignore	Add WHOIS fallback and Infomaniak API integration for .eu domains	2026-02-25 21:06:42 +01:00
CLAUDE.md	init	2026-02-25 20:36:14 +01:00
go.mod	init	2026-02-25 20:36:14 +01:00
go.sum	init	2026-02-25 20:36:14 +01:00
main.go	Parallelize domain checks	2026-02-25 21:28:28 +01:00
mise.toml	init	2026-02-25 20:36:14 +01:00
README.md	Add README	2026-02-25 21:15:36 +01:00

README.md

domexp

CLI tool to check domain registration expiration dates.

Usage

domexp [file]

Reads domain names from domains.txt (or a custom file) and prints a sorted table with days until expiry.

DOMAIN                         EXPIRES       DAYS LEFT
------------------------------------------------------------
example.com                    2026-03-01    4 days !!!
other.org                      2026-05-15    79 days !
mysite.net                     2027-01-20    329 days
broken.eu                      ERROR: ...

Urgency indicators:

!!! — expires in less than 30 days
! — expires in less than 90 days

Domain file format

One domain per line. Blank lines and # comments are ignored.

# production
example.com
mysite.net

# staging
staging.example.com

Lookup strategy

For each domain, expiry is resolved in this order:

Infomaniak API — if INFOMANIAK_TOKEN is set, domains registered at Infomaniak are resolved instantly (required for .eu domains, which EURid does not expose via RDAP or WHOIS)
RDAP — standard protocol, used for most TLDs
WHOIS — fallback when RDAP is unavailable or returns no expiry

Infomaniak setup

Create an API token at manager.infomaniak.com/v3/infomaniak-api with the Domain scope, then add it to a .env file next to the binary:

INFOMANIAK_TOKEN=your_token_here

Build

go build