protobuf.app is registered with domain: APP and is hosted on AS22612 in United States. We couldn't read an SSL certificate for it when we last analysed it.
What security vendors and the WOT community say about this domain.
What loads and tracks visitors when the homepage opens.
Running a full browser scan of the homepage… This takes about a minute.
We couldn't read an SSL certificate on port 443 when we last analysed protobuf.app. Refresh the analysis to check again.
4 similar domains registered in the last 90 days — possible typosquatting or phishing.
| Domain | Why it’s similar | Registered | Status | Report |
|---|---|---|---|---|
| photobuf.com | Typo | 1 Oct 2026 | Checking… | Report → |
| flumoprotobuf.beauty | Keyword added | 11 Oct 2026 | Checking… | Report → |
| plummetprotobuf.mom | Keyword added | 22 Aug 2026 | Checking… | Report → |
| the-protobuf-project.org | Keyword added | 7 Aug 2026 | Checking… | Report → |
From CubDomain's daily newly registered domains. Similar doesn't mean malicious.
Is protobuf.app’s name taken on other extensions?
Every IP address protobuf.app resolves to, and where it's hosted.
| Host | IPv4 address | TTL |
|---|---|---|
| protobuf.app | 162.255.119.72 | 1800 |
| Host | Mail server | TTL |
|---|---|---|
| protobuf.app | 10 eforward1.registrar-servers.com | 1800 |
| protobuf.app | 10 eforward2.registrar-servers.com | 1800 |
| protobuf.app | 10 eforward3.registrar-servers.com | 1800 |
| protobuf.app | 15 eforward4.registrar-servers.com | 1800 |
| protobuf.app | 20 eforward5.registrar-servers.com | 1800 |
| Host | Name server | TTL |
|---|---|---|
| protobuf.app | dns1.registrar-servers.com | 1800 |
| protobuf.app | dns2.registrar-servers.com | 1800 |
| Host | Text | TTL |
|---|---|---|
| protobuf.app | "v=spf1 include:spf.efwd.registrar-servers.com ~all" | 1800 |
| Host | Start of authority | TTL |
|---|---|---|
| protobuf.app | dns1.registrar-servers.com hostmaster.registrar-servers.com 1727733588 43200 3600 604800 3601 | 3601 |
Other domains served from 162.255.119.72. Normal for shared hosting and CDNs.
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Common questions, answered from this report's data.
protobuf.app has no community safety rating yet. We couldn't read an SSL certificate on it when we last analysed it. See Security →
protobuf.app is registered through domain: APP. See Overview →
protobuf.app is served from 1 IP address, mainly on AS22612 in United States. See Hosting →
The first response from http://www.protobuf.app, before any redirect: caching, server and policy headers.
Four timed TCP connections to port 443 from CubDomain's servers.
CubDomain is not affiliated with protobuf.app. Data is collected independently from public sources and some figures are estimates, provided for information only.
Spam and malware blocklists for the site's IP and mail servers.
Found in public certificate transparency logs.
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When the site first appeared, and what has changed since.
We record what changes from the next time this report is refreshed.