IP address

Passive DNS

Tags: IP in hostname

IP blacklists: DataPlane SMTP greeting
173.255.230.21 is listed on the DataPlane SMTP greeting blacklist.

Description: DataPlane.org is a community-powered Internet data, feeds,<br>and measurement resource for operators, by operators. IPs that are<br>identified as SMTP clients issuing unsolicited HELO or EHLO commands.
Type of feed: primary (feed detail page)

Last checked at: 2025-04-28 14:10:05.761000
Was present on blacklist at: 2025-04-27 18:10, 2025-04-27 22:10, 2025-04-28 02:10, 2025-04-28 06:10, 2025-04-28 10:10, 2025-04-28 14:10
Spamhaus SBL CSS
173.255.230.21 is listed on the Spamhaus SBL CSS blacklist.

Description: The Spamhaus CSS is part of the SBL. CSS listings will have return code 127.0.0.3 to differentiate from regular SBL listings, which have return code 127.0.0.2.
Type of feed: secondary (DNSBL) (feed detail page)

Last checked at: 2025-04-27 18:12:52.270000
Was present on blacklist at: 2025-04-27 18:12
Spamhaus XBL CBL
173.255.230.21 is listed on the Spamhaus XBL CBL blacklist.

Description: The Spamhaus Exploits Block List (XBL) is a realtime database of IP addresses of hijacked PCs infected by illegal 3rd party exploits, including open proxies, worms/viruses with built-in spam engines, and other types of trojan-horse exploits.
Type of feed: secondary (DNSBL) (feed detail page)

Last checked at: 2025-04-27 18:12:52.270000
Was present on blacklist at: 2025-04-27 18:12

Origin AS: AS63949 - LINODE-AP
BGP Prefix: 173.255.224.0/20
geo: United States, Cedar Knolls; 🕑 America/New_York
hostname: 173-255-230-21.ip.linodeusercontent.com
hostname_class: ['ip_in_hostname']
Address block ('inetnum' or 'NetRange' in whois database): 173.255.192.0 - 173.255.255.255
reserved_range: 0
Shodan's InternetDB: Open ports: 22, 25, 80, 8083, 8181; Tags: cloud, self-signed; CPEs: cpe:/a:openbsd:openssh:8.7
ts_added: 2025-04-27 18:12:52.092000
ts_last_update: 2025-04-28 14:13:24.064000

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DShield event timeline

Presence on blacklists