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
   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
8. 08
   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
9. 09
   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
10. 10
    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
11. 11
    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
12. 12
    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
13. 13
    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
14. 14
    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
15. 15
    Quad9 quad9.net Top 10K English

    Quad9 | A public and free DNS service for a better security and privacy

    A public and free DNS service for a better security and privacy

    • Google Search Console
    • Slack
    • Mailchimp
    • nginx
    • Zendesk

    0 say Quad9 is a good alternative to Spamhaus 0 say Quad9 isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.870
16. 16
    ifconfig.me Top 10K English

    What Is My IP Address? - ifconfig.me

    Get my IP Address

    • Google Fonts
    • Google Search Console
    • Google Cloud
    • Google Cloud DNS

    0 say ifconfig.me is a good alternative to Spamhaus 0 say ifconfig.me isn’t a real alternative to Spamhaus

    Comment
    Close cos 0.872
17. 17
    Slashdot slashdot.org Top 10K English

    Slashdot: News for nerds, stuff that matters, & software

    Slashdot: News for nerds, stuff that matters. Timely news source for technology related news and B2B software reviews & comparisons.

    • Cloudflare
    • Google Search Console
    • Google Ad Manager
    • Google Analytics
    • Mailchimp
    • Matomo

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

    Comment
    Close cos 0.873
18. 18
    Fastmail fastmail.com English

    Email and calendar made better | Fastmail

    Fast, private email hosting for you or your business. More productive, lightning fast, simple and built to save you time.

    • Cloudflare
    • Fastmail

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

    Comment
    Close cos 0.871
19. 19
    VirusTotal virustotal.com Top 10K English

    VirusTotal

    VirusTotal

    • Google Search Console
    • Google Tag Manager
    • Firebase
    • Google Cloud
    • Google Cloud DNS
    • Google Workspace

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

    Comment
    Close cos 0.866
20. 20
    ICANN icann.org Top 10K English

    Internet Corporation for Assigned Names and Numbers (ICANN)

    ICANN’s mission is to help ensure a stable, secure, and unified global Internet.

    • Cloudflare
    • Google Search Console
    • Angular
    • AngularJS
    • Atlassian
    • Cloudflare Web Analytics

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

    Comment
    Close cos 0.870

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.