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    About

    Spamhaus publishes IP and domain reputation data and threat intelligence used to identify spam, phishing, malware and other online abuse. The Spamhaus Project carries out research and offers datasets and tools under its published usage policies.

    Read more

    Spamhaus Technology supplies commercial access to reputation and threat data, with APIs and technical documentation for service providers and security teams. The two organisations describe their work as a partnership.

    Facts

    • Ownership
      Private
    • Software type
      SaaS
    • Categories
      • Email security
    • Supported languages
      English
    • Certification and memberships
      • M3AAWG

    Related

    Products1

    SoftwareSpamhaus IP & Domain Reputation Checker

    The Spamhaus IP & Domain Reputation Checker provides a manual lookup for an IP address or domain. Its results show the submitted…

    View profile →

    Memberships1

    Verified from cited rosters or confirmed directly by the membership organisation.

    OrganisationsM3AAWGSupporter

    M3AAWG is a global industry association working on internet abuse. Its members include communications providers, hosting companies, security vendors, email service providers…

    View profile →

    Membership checked 4 October 2026. Official roster

    Activity

    All coverage (12) →

    emailexpert coverage

    Industry News 18 September 2026·emailexpert

    At least eight arguments, two stages, one church: what to expect at the London Forum

    emailexpert Forum comes to London for the first time on 16 and 17 November. Around 250 people, a Grade I listed church in Marylebone, and a programme designed…

    Industry News 10 September 2026·emailexpert

    Validity opens Heatwave, a public blocklist for synthetic domain warming

    Validity announced Heatwave on 3 September. It is a domain blocklist drawn from the Validity Intelligence Network, published at lookup.validity.tools. The release describes it as identifying unethical cold…

    Company updates

    • Domain Reputation Update April - September 2026 Posted 15 October 2026 | 3:03 pm
    • Botnet Threat Update January to June 2026 Posted 10 July 2026 | 2:22 pm
    • Spamhaus CERT Insight Portal: Enhanced botnet C&C intelligence Posted 14 June 2026 | 5:37 pm
    • Bulletproof Hosting: Cutting off the facilitators Posted 11 June 2026 | 12:54 pm

    Contact and locations

    London office

    London
    Greater London
    England
    United Kingdom
    Get directions
    Website
    spamhaus.com
    View map
    • Xspamhaus ↗

    Company details

    • Company type
      Private
    • Year founded
      1998

    News and coverage

    12 related stories

    Industry News 18 September 2026·emailexpert

    At least eight arguments, two stages, one church: what to expect at the London Forum

    emailexpert Forum comes to London for the first time on 16 and 17 November. Around 250 people, a Grade I listed church in Marylebone, and a programme designed…

    Industry News 10 September 2026·emailexpert

    Validity opens Heatwave, a public blocklist for synthetic domain warming

    Validity announced Heatwave on 3 September. It is a domain blocklist drawn from the Validity Intelligence Network, published at lookup.validity.tools. The release describes it as identifying unethical cold…

    Security & Deliverability 10 September 2026·emailexpert

    Cloudflare gets filtered twice in three weeks. Both times the fix is “allowlist Cloudflare”

    Cloudflare has logged two email delivery incidents in under three weeks, one as a security gateway and one as a sender. In both, its advice to customers was…

    Industry News 29 December 2025·emailexpert

    When AI Kindness Feels Like Spam: Email Lessons

    An AI’s “kindness” emails spark debate on consent, spam, and automation in the evolving world of AI outreach.

    Security & Deliverability 17 September 2025·emailexpert

    Spamhaus threatens to block email for Korea Telecom users

    Anti-spam service gave organisations until this week to switch systems or risk having legitimate mail rejected Korea Telecom users have been given until Tuesday to migrate their email…

    Industry News 29 August 2025·emailexpert

    Farewell to the Spamhaus “Most Wanted” List: ROKSO

    Every community has its own heroes and villains. For those in the trenches of email delivery, cybersecurity, and abuse prevention, the latter were often found on a simple,…

    Industry News 5 October 2023·emailexpert

    Spamhaus Opens Doors to Public Submissions to Enhance the Email Experience

    Spamhaus, renowned for its pursuit to help eradicate spam and bolster internet security, has today issued an invitation to the public welcoming their submission of spam reports. To…

    Industry News 3 February 2023·emailexpert

    Cyren without staff, what next for clients?

    News out of Cyren this week has sent shockwaves through the email and security community. In a move that took our industry by surprise, the provider of inbox…

    Security & Deliverability 6 January 2023·emailexpert

    Spamhaus Monthly Malware Digest 

    Spamhaus and abuse.ch have teamed up this month to release their monthly malware digest, helping organisations and users protect themselves from online threats and malicious software. The final…

    Events 16 June 2022·emailexpert

    Email Marketing Conference: 2022 International Inbox Expo

    The Email Marketing Conference with an anticipated attendance of more than 200, Inbox Expo has become an industry reference among the top international events for the email marketing industry. In…

    Page 1 of 2 Next
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