Suomispam Domain Blocklist (DBL)
The Suomispam DBL is a domain-based blacklist (or blocklist) used to identify and filter spam domains, specifically those targeting Finland.
Updated on 17 Jun 2026: We updated this guide with DBL lookup details, response codes, and clearer delisting guidance for domain listings.
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Check if you are listed on Suomispam Domain Blocklist (DBL)
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 Suomispam Domain Blocklist (DBL)?
The Suomispam Domain Blocklist (DBL), with the zone name dbl.suomispam.net, is a domain and URI-based DNSBL. Mail server operators can use this blocklist to check sender domains or domains found in links within an email body to help filter unwanted messages related to Finnish spam.
Suomispam's policy defines spam as Unsolicited Bulk Email (UBE). A message is spam if it is both unsolicited and sent in bulk, regardless of local laws. Across Suomispam's blocklists, listing decisions are based on case-by-case review and the following categories:
- Spam sources: Hosts, domains, or related infrastructure involved in sending spam. Suspicious or spam-focused hosts can be listed quickly, while shared servers are handled with more patience to reduce collateral damage.
- Spam support services: Organizations that enable spam, such as bulletproof hosting services or spam list vendors, even if they do not send spam directly.
- Spam targets: Websites and domains advertised in spam emails, including link redirectors, reply-to domains, and final destination sites.
- Escalations: Wider listings used when a spam problem is severe enough that related infrastructure needs to be treated as risky, even when not every item is the direct spam source.
- Suspicious networks: Networks that trigger Suomispam's analysis and do not appear to have a clear legitimate use, such as snowshoe ranges or infrastructure tied to spam campaigns.
This private reputation blacklist (or blocklist) works like an opinion about observed spam behavior. Listings do not depend on official court interpretations.
Who runs Suomispam Domain Blocklist (DBL)?
Suomispam runs the Suomispam Domain Blocklist (DBL). It is a reputation service that covers likely senders of spam written in Finnish or otherwise related to Finland. The organization was created to fill a gap left by global blacklists, which do not always have comprehensive coverage for smaller countries and linguistic areas.
Suomispam itself does not block any email. It provides data and information about senders it considers probable sources of Finnish spam. Individual mail server operators decide whether to use that information to filter incoming messages.
How to use Suomispam DBL in filtering
Suomispam DBL is used by querying domains against dbl.suomispam.net. The most relevant checks are sender domains and domains found in message links, because DBL listings focus on domains known to be related to spammers or used in spam.
Suomispam DBL test recordDNS
test.dbl.suomispam.net -> A 127.0.0.2 TXT: 20170312 test entry
A positive DBL response uses a loopback code that explains the listing reason. The main return codes are:
- 127.0.0.2: Spam source.
- 127.0.0.3: Escalation.
- 127.0.0.4: Target site, such as a redirector or final destination promoted in spam.
- 127.0.0.5: Suspicious activity.
- 127.0.0.99: Other or uncategorized reason.
Use DBL results as one filtering signal. A domain blacklist can catch spam that passes an IP check when the sending infrastructure changes but the sender domain, redirector, or promoted site remains tied to the campaign.
How do I get removed and delisted from Suomispam Domain Blocklist (DBL)?
To get removed from the Suomispam Domain Blocklist (DBL), you must show that the original reason for the listing is no longer valid. Suomispam delists entries when it believes the spam problem has been resolved. Old listings are reviewed periodically, but the fastest path is to contact Suomispam with specific, credible information.
Before requesting delisting, follow these guidelines to avoid wasting time:
- Be specific: When you request delisting, identify exactly what domain or IP is listed. Explain what the problem was and the steps you took to fix it. Vague claims like "we fixed the problem" are often ignored.
- Verify the listing at the source: Use Suomispam's own lookup to confirm that your domain is actually on the DBL. Do not rely on a checker that tests the IP address of a shared hosting service and then reports that as a domain listing.
- Understand the listing reason: Listings are not related to SPF or DMARC records. The common reasons are being a direct spam source, being a spamvertized site promoted in spam campaigns, or being part of an escalation tied to wider abuse.
- Contact your hosting provider: If the listing is for a shared IP address or a wider network block, often indicated by a wildcard '*', involve your hosting provider. Suomispam says it cannot create exceptions for single users inside a larger listed network.
Suomispam does not provide email headers as proof of spam because it protects spamtrap addresses. Delisting depends on trust. If your explanation matches Suomispam's observations, removal is more likely. If it does not, Suomispam can wait to see whether the issue stays resolved.
What's the impact of being listed on Suomispam Domain Blocklist (DBL)?
The impact of being listed on the Suomispam Domain Blocklist (DBL) is usually low for most senders. This blacklist is specialized, focusing on spam in Finnish or spam that targets recipients in Finland.
If your target audience is in Finland, a listing can cause deliverability issues because Finnish mail server operators are the most likely to use this blocklist. For senders that do not target this region, the impact on global email delivery is usually minimal. The real impact depends on which mailbox providers and companies use this specific blacklist in their filtering.
For ongoing monitoring, Suped can track blocklist and blacklist appearances alongside DMARC reporting, so domain owners can connect reputation issues with authentication and sending patterns.
