25/tcp
SMTP
first 2026-08-27 · last 2026-08-27
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- 220 localhost.members.linode.com ESMTP Postfix (Debian/GNU)
Raw response
554 5.5.0 Error: SMTP protocol synchronization
Host
As of our latest check on 2026-08-27, 104.237.153.128 (Akamai Connected Cloud, AS63949, United States) had 3 open ports (25, 80, 443) and no known CVEs.
Open ports and CVEs as of our latest check of this host, 2026-08-27.
No known CVEs on this host.
Not a Tor relay, not a VPN or privacy relay address, and not on a current public blocklist.
554 5.5.0 Error: SMTP protocol synchronization
HTTP/1.1 404 Not Found content-type: text/html cache-control: private, no-cache, max-age=0 pragma: no-cache date: Thu, 27 Aug 2026 20:30:33 GMT server: LiteSpeed content-encoding: gzip vary: Accept-Encoding transfer-encoding: chunked connection: Keep-Alive a �
HTTP/1.0 301 Moved Permanently Location: https://104.237.153.128/ Cache-Control: private, no-cache, max-age=0 Pragma: no-cache Server:LiteSpeed Content-Length: 0 Connection: Close
Every port that has answered a connection on this address, and when. A port is listed as open above only when a service was identified on it. Times are UTC.