www.blocklist.de Fail2Ban-Reporting Service BlockList.de
BlockList.de is an IP-based blocklist (or blacklist) of servers reported for attacks. IPs are automatically removed after 48 hours.
Updated on 17 Jun 2026: We refreshed this guide with DNS lookup details, current delisting language, and clearer notes on listing impact.
Summarize with
Check if you are listed on www.blocklist.de Fail2Ban-Reporting Service BlockList.de
And 143 other blocklists.
Spamhaus
0Spam
Cisco
NoSolicitado
URIBL
abuse.ro
ALPHANET
Anonmails
Ascams
BLOCKEDSERVERS
Calivent Networks
EFnet
JustSpam
Kempt.net
NordSpam
RV-SOFT Technology
Scientific Spam
Spamikaze
SpamRATS
SPFBL
Suomispam
System 5 Hosting
Team Cymru
Validity
www.blocklist.de Fail2Ban-Reporting Service
ZapBL
2stepback.dk
Fayntic Services
ORB UK
technoirc.org
TechTheftSpamhaus0SpamCiscoNoSolicitadoURIBLabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERSCalivent NetworksEFnetJustSpamKempt.netNordSpamRV-SOFT TechnologyScientific SpamSpamikazeSpamRATSSPFBLSuomispamSystem 5 HostingTeam CymruValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftSpamhaus0SpamCiscoNoSolicitadoURIBLabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERSCalivent NetworksEFnetJustSpamKempt.netNordSpamRV-SOFT TechnologyScientific SpamSpamikazeSpamRATSSPFBLSuomispamSystem 5 HostingTeam CymruValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftSpamhaus0SpamCiscoNoSolicitadoURIBLabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERSCalivent NetworksEFnetJustSpamKempt.netNordSpamRV-SOFT TechnologyScientific SpamSpamikazeSpamRATSSPFBLSuomispamSystem 5 HostingTeam CymruValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftSpamhaus0SpamCiscoNoSolicitadoURIBLabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERSCalivent NetworksEFnetJustSpamKempt.netNordSpamRV-SOFT TechnologyScientific SpamSpamikazeSpamRATSSPFBLSuomispamSystem 5 HostingTeam CymruValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftWhat is www.blocklist.de Fail2Ban-Reporting Service BlockList.de?
The www.blocklist.de Fail2Ban-Reporting Service BlockList.de is a real-time IP-based DNS blocklist (blacklist) that lists IP addresses reported for attacks against network services. This blacklist is populated by reports from users running Fail2Ban or DenyHosts on their servers. Its policy is to list attackers for 48 hours, then automatically remove them unless a delist request is used earlier. System administrators use the list to block connections from known malicious sources, including email servers, web servers, FTP servers, SSH services, and login pages. BlockList.de itself does not block email or requests; the administrator who configures the list is responsible for any refusals or blocks that result.
Technically, the main DNSBL zone is bl.blocklist.de, which logs IP addresses that have participated in attacks against specific services. The service also publishes service-specific blacklist zones for SSH, mail, FTP, IMAP, Apache, SIP, and brute-force login traffic.
- SSH attacks (ssh, ssh-ddos)
- Mail server attacks (postfix, mail, exim, exim4, courierpop3, courierimap, sasl, amavis, dovecot, imap, pop3)
- FTP attacks (proftpd, ftp, pure-ftpd, pureftpd)
- Web server attacks and bad bots (BadBots, irc-bot, reg-bot, php-url-fopen, rfi-attack, shellshock, ApacheDDOS, SQL-Injection)
- VoIP attacks (Asterisk, sip, voip)
- Brute-force logins on admin panels and CMS logins (webmin, plesk, WordPress, Joomla)
To reduce false positives, the service checks reported IPs against external allowlist and denylist data before publishing reports and blocklist entries.
How DNS lookups work
Queries use the reversed IP format common to DNSBL and RBLDNS lookups. For IP 127.0.0.2, the all-services query checks 2.0.0.127.bl.blocklist.de.
DNS query exampleBASH
host -t any 2.0.0.127.bl.blocklist.de
The answer can include a TXT record with the attack type and last attack timestamp, plus an A record that maps to a service category. For example, 127.0.0.14 maps to SSH and 127.0.0.15 maps to w00tw00t. The official DNS/RBL page also documents regional zones for Germany and the USA, plus service zones such as ssh.bl.blocklist.de, mail.bl.blocklist.de, ftp.bl.blocklist.de, imap.bl.blocklist.de, apache.bl.blocklist.de, sip.bl.blocklist.de, and bruteforcelogin.bl.blocklist.de.
- Use bl.blocklist.de or all.bl.blocklist.de when the policy should check every reported service type.
- Use a service-specific zone when the policy only applies to one traffic class, such as SSH, mail, FTP, IMAP, Apache, SIP, or brute-force login attempts.
- Treat a match as a short-lived abuse signal and verify server logs before making a permanent block decision.
Who runs www.blocklist.de Fail2Ban-Reporting Service BlockList.de?
This service is a free, voluntary project run by a fraud and abuse specialist. The founder's own servers were frequently attacked, which led to the creation of this blocklist. Its mission is to report attacks to the abuse departments of the networks where the attacking servers are hosted, so providers can notify customers of compromises and take action against the attackers.
The platform reports more than 70,000 attacks every 12 hours. These reports are sent in machine-readable X-ARF format to abuse contacts found through WHOIS and abuse contact databases. Its focus includes SSH, mail, web, FTP, SIP, and other network attacks rather than only spam. It is a community-driven effort with partners who contribute attack data from their own servers.
How do I get removed and delisted from www.blocklist.de Fail2Ban-Reporting Service BlockList.de?
Before requesting removal from any blacklist or blocklist, identify and resolve the issue that caused the listing. That can mean securing a compromised server, correcting a misconfiguration, closing an exposed service, or stopping abusive traffic. Requesting delisting before fixing the cause usually leads to another listing after the next attack report.
Listings on this blocklist expire automatically after 48 hours. If the issue is fixed and faster removal is needed, use the Delist page. BlockList.de states that a submitted delist request is processed within 60 minutes when the lists are next generated.
What's the impact of being listed on www.blocklist.de Fail2Ban-Reporting Service BlockList.de?
The impact of being on this blacklist is generally low because use depends on individual administrators choosing to query BlockList.de. A listing matters when a recipient mail server, firewall, forum, web application, or security rule uses this specific blocklist. In that case, email can be rejected, a server connection can be refused, or non-email web traffic can be blocked as bot or abuse traffic.
For email teams using Suped's DMARC reporting product, compare the affected source IP with SPF, DKIM, and DMARC results before treating a blocklist.de listing as the only cause of failed delivery. That workflow separates authentication failures from short-lived IP reputation problems.
