Sites like Spamhaus

01 · Entity

About Spamhaus

Spamhaus spamhaus.org

Strengthening trust and safety across the internet | Spamhaus

Strengthening trust and safety online through IP and domain reputation intelligence, expertise, education, and community collaboration.

Wikidata: generic top-level domain

Top 1K · #910 English 10 technologies Crawled Nov 6, 2026

Visit Spamhaus

Summary by Claude

Spamhaus publishes IP and domain reputation data, including DNS-based blocklists of spam sources, botnet controllers and malicious networks, offered free for limited use and commercially via DNS queries, response policy zones and an intelligence API. It also provides a lookup tool for checking listings and a portal for reporting malicious activity.

Who it’s for

Email providers, network operators, security teams

Business model

Commercial data licensing

• threat intelligence
• DNS blocklist (DNSBL)
• IP reputation lookup
• domain reputation data
• spam blocklist removal
• botnet controller list
• DROP list
• DNS response policy zones
• email spam filtering

02 · Embedding space

Competitor map

Each alternative by how close its vector is to Spamhaus’s (x) and how much traffic it gets, how much of the stack it shares, or where it sits in the embedding space itself (y). Lines split each axis at the median. Hover for the numbers, click to jump to it in the list.

1. 01
   URIBL.COM uribl.com Top 10K English

   URIBL.COM - Realtime URI Blacklist

   URIBL.COM is a Realtime URI Blacklist (RHSBL) served via DNS to identify Unsolicitied Bulk and Commercial Email (UCE/UBE) based on the links within the email. URIBL.COM is enabled by default in the popular opensource SpamAssassin.

   • Google Analytics
   • nginx

   0 say URIBL.COM is a good alternative to Spamhaus 0 say URIBL.COM isn’t a real alternative to Spamhaus

   Comment
   Very close cos 0.916
2. 02
   DomainTools domaintools.com Top 10K English

   Threat Intelligence & Domain Security Platform | DomainTools

   DomainTools provides DNS-based threat intelligence covering 97% of internet infrastructure. Detect, investigate & block malicious domains. Request a demo.

   • Cloudflare
   • Google Search Console
   • Google Tag Manager
   • Google Workspace
   • GSAP
   • jsDelivr

   0 say DomainTools is a good alternative to Spamhaus 0 say DomainTools isn’t a real alternative to Spamhaus

   Comment
   Close cos 0.888
3. 03
   Rspamd rspamd.com Top 10K English

   Rspamd — Email Security System

   Rspamd is an email-security engine that stops phishing, business email compromise, malware, and spam for enterprises, ESPs, and hosting providers. Open-source detection core with premium support and SLAs.

   • Google Fonts
   • nginx

   0 say Rspamd is a good alternative to Spamhaus 0 say Rspamd isn’t a real alternative to Spamhaus

   Comment
   Close cos 0.885
4. 04
   NLnet Labs nlnetlabs.nl Top 10K English

   NLnet Labs - Home

   Research & Development, Internet architecture, DNS, Routing, Stability and Security.

   • Adobe Fonts
   • Bootstrap
   • Font Awesome
   • Google Workspace
   • jQuery
   • nginx

   0 say NLnet Labs is a good alternative to Spamhaus 0 say NLnet Labs isn’t a real alternative to Spamhaus

   Comment
   Close cos 0.882
5. 05
   mail.com Top 10K English

   Free email accounts | Register today at mail.com

   Email how it is supposed to be: ✔ Free, simple and secure ✔ Manage multiple mail accounts in one place, from any device ✔ Sign up today!

   • Google Search Console
   • Google Tag Manager
   • Meta Business Suite
   • nginx

   0 say mail.com is a good alternative to Spamhaus 0 say mail.com isn’t a real alternative to Spamhaus

   Comment
   Close cos 0.884
6. 06
   Sender Score senderscore.com Top 10K English

   Sender Score - Email Marketing Education and Free Tools

   Email doesn't have to be complicated. Assess where you are today, learn how to improve, and leverage free tools and education.

   • Cloudflare
   • Google Tag Manager
   • Adobe Fonts
   • cdnjs
   • Font Awesome
   • jQuery

   0 say Sender Score is a good alternative to Spamhaus 0 say Sender Score isn’t a real alternative to Spamhaus

   Comment
   Close cos 0.879
7. 07
   GMX gmx.net Top 10K German

   GMX - kostenlose E-Mail, Cloud, Nachrichten & Freemail

   Kostenlose E-Mail-Adresse erstellen, Nachrichten lesen und Fotos & Dateien in der GMX Cloud sicher speichern. Jetzt registrieren!

   • Google Search Console
   • Apache HTTP Server
   • Criteo
   • Meta Business Suite

   0 say GMX is a good alternative to Spamhaus 0 say GMX isn’t a real alternative to Spamhaus

   Comment
   Close cos 0.883
8. 08
   DataDome datadome.co Top 10K English

   datadome.co

   cybersecurity company

   • Google Search Console
   • Apple Business
   • Atlassian
   • Amazon CloudFront
   • DataDome
   • DocuSign

   0 say DataDome is a good alternative to Spamhaus 0 say DataDome isn’t a real alternative to Spamhaus

   Comment
   Close cos 0.880
9. 09
   Akismet akismet.com Top 10K English

   Akismet: Spam Protection for Websites

   Say goodbye to spam with Akismet – the ultimate spam protection used by millions of websites. Sign up today and never worry about spam again!

   • Google Search Console
   • Meta Pixel
   • nginx
   • PHP
   • SendGrid
   • WordPress

   0 say Akismet is a good alternative to Spamhaus 0 say Akismet isn’t a real alternative to Spamhaus

   Comment
   Close cos 0.878
10. 10
    NextDNS nextdns.io Top 10K English

    NextDNS - The new firewall for the modern Internet

    NextDNS protects you from all kinds of security threats, blocks ads and trackers on websites and in apps and provides a safe and supervised Internet for kids — on all devices and on all networks.

    • Cloudflare
    • Google Search Console
    • Cloudflare DNS
    • Google Workspace
    • Next.js
    • React

    0 say NextDNS is a good alternative to Spamhaus 0 say NextDNS isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.879
11. 11
    brightcloud.com Top 10K English

    Enterprise Threat Intelligence Services & Solutions

    Our threat intelligence services secure businesses & their products worldwide utilizing AI & a global sensor network to strengthen & secure partner solutions.

    • Google Search Console
    • Akamai
    • Amazon SES
    • Google Workspace
    • Microsoft 365
    • Proofpoint

    0 say brightcloud.com is a good alternative to Spamhaus 0 say brightcloud.com isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.875
12. 12
    web.de Top 10K

    WEB.DE - kostenlose E-Mail-Adresse, FreeMail & Nachrichten

    Sichere Kommunikation, aktuelle Nachrichten und nützliche Online-Services - alles an einem Ort. Einfach, kostenlos und zuverlässig.

    • Google Search Console
    • Apache HTTP Server
    • Criteo
    • Meta Business Suite

    0 say web.de is a good alternative to Spamhaus 0 say web.de isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.879
13. 13
    DuckDuckGo duckduckgo.com Top 1K English

    DuckDuckGo - Protection. Privacy. Peace of mind.

    The Internet privacy company that empowers you to seamlessly take control of your personal information online, without any tradeoffs.

    • Slack
    • Zoom
    • Apple Business
    • Microsoft 365
    • Next.js
    • nginx

    0 say DuckDuckGo is a good alternative to Spamhaus 0 say DuckDuckGo isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.877
14. 14
    ngenix.net Top 1K Russian

    Доступ к сайту временно ограничен владельцем веб-ресурса.

    • Google Search Console
    • GlobalSign
    • nginx
    • Yandex Mail
    • Yandex Webmaster

    0 say ngenix.net is a good alternative to Spamhaus 0 say ngenix.net isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.873
15. 15
    nazwa.pl Top 10K Polish

    nazwa.pl | Domeny za 0 zł, Nowoczesne usługi w chmurze, Hosting dla firm, Poczta biznesowa 10 TB, Email Marketing, SSL, Monitoring WWW

    Domeny za 0 zł, Hosting dla firm, Poczta biznesowa 10 TB, Email Marketing, Certyfikaty SSL ECDSA. Z naszych usług skorzystało już ponad 1 000 000 Klientów. Zaufaj doświadczeniu.

    • Google Search Console
    • Google Tag Manager
    • Apache HTTP Server
    • Bing Webmaster Tools
    • reCAPTCHA

    0 say nazwa.pl is a good alternative to Spamhaus 0 say nazwa.pl isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.875
16. 16
    immowelt immowelt.de Top 10K English

    immowelt.de

    company

    • Google Search Console
    • Adobe
    • Amazon SES
    • Apple Business
    • Atlassian
    • Amazon CloudFront

    0 say immowelt is a good alternative to Spamhaus 0 say immowelt isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.877
17. 17
    EuroDNS eurodns.com Top 10K English

    EuroDNS: Domains, Hosting & Web Essentials All In One Place

    Find a domain, launch your website, and make it happen with us! From hosting, to SSL, to branded email: EuroDNS has everything you need in one place.

    • Google Fonts
    • Google Search Console
    • Google Tag Manager
    • Apple Business
    • Atlassian
    • GlobalSign

    0 say EuroDNS is a good alternative to Spamhaus 0 say EuroDNS isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.875
18. 18
    OpenDNS opendns.com Top 1K

    company

    • Google Search Console
    • Amazon SES
    • DocuSign
    • Zendesk

    0 say OpenDNS is a good alternative to Spamhaus 0 say OpenDNS isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.871
19. 19
    AdGuard DNS adguard-dns.com Top 10K English

    AdGuard DNS — ad-blocking DNS server

    Create your ad-blocking DNS server that will protect your personal data, prevent tracking and allow you to control access to specific content on the Internet.

    • Cloudflare
    • Google Search Console
    • Vue.js
    • Amazon SES
    • Cloudflare DNS
    • Google Workspace

    0 say AdGuard DNS is a good alternative to Spamhaus 0 say AdGuard DNS isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.871
20. 20
    ImmobilienScout24 immobilienscout24.de Top 10K

    Ich bin kein Roboter - ImmobilienScout24

    an online service/website that offers search for real estate (houses, apartments, etc.) purchase or rental in Germany, Austria and Switzerland

    • Google Search Console
    • Amazon SES
    • Amazon CloudFront
    • Meta Business Suite
    • Microsoft 365
    • Amazon Route 53

    0 say ImmobilienScout24 is a good alternative to Spamhaus 0 say ImmobilienScout24 isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.876

Ranked by score: the cosine similarity of each site’s vector to spamhaus.org’s, less a small penalty for generic sites that are close to everything. Highlighted technologies are ones Spamhaus uses too. Votes and comments come from visitors and don’t change the ranking.

04 · Fingerprints

Technology

What Spamhaus is built with, and what its closest competitors use, from its homepage’s code and its DNS records.