Snapshot · 2026-07-06
Disposable-domain snapshot observatory
This report is generated from the exact JSON snapshot bundled into TmpKit's disposable-domain checker. It describes the input and algorithm; it does not claim that every listed domain is still disposable or that an unlisted domain is safe.
Provenance and license
The source is the community-maintained disposable-email-domains project, published under CC0-1.0. TmpKit stores a local snapshot so the first classification step is deterministic. The repository history dates this bundled version to 6 July 2026; upstream may have changed since then. disposable-email-domains.
Snapshot added or refreshed in this repository:
Most common final DNS labels
This is a count of the last dot-separated label only. It is not a Public Suffix List analysis: for example, uk is counted as the final label of a co.uk name. We use this deliberately simple view to avoid presenting a guessed registrable domain as fact.
| Final label | Entries | Share |
|---|---|---|
| .com | 2,782 | 35.3% |
| .net | 771 | 9.8% |
| .org | 411 | 5.2% |
| .de | 217 | 2.7% |
| .top | 179 | 2.3% |
| .ru | 171 | 2.2% |
| .cc | 160 | 2.0% |
| .uk | 159 | 2.0% |
| .us | 153 | 1.9% |
| .info | 147 | 1.9% |
| .cfd | 121 | 1.5% |
| .store | 110 | 1.4% |
What the live checker actually does
- Trim and lowercase the submitted email address or domain; remove mailto: and a trailing dot.
- Reject values that fail DNS-name length, label, or character checks.
- Walk from the full host toward its parents. A listing for example.com therefore also classifies sub.example.com.
- Run a separate, live five-second MX lookup and report whether the submitted domain currently publishes mail exchangers.
- Return both signals. A blocklist match and working MX records answer different questions and are not combined into a safety score.
What this snapshot supports
- The file has no duplicate after trim-and-lowercase normalization.
- Internationalized domains are present but rare in their ASCII punycode form.
- A small group of final labels accounts for a large portion of rows, while the list still spans multiple label depths.
Limits and correction path
- Disposable services rotate domains faster than any static list can update.
- A listed domain can change ownership or purpose; a miss can be a newly created disposable domain.
- MX availability only shows mail-routing configuration at query time. It does not establish reputation, ownership, or safe use.
- Proposed list corrections belong upstream. TmpKit should refresh its snapshot only after reviewing the upstream change and license.