Officially, status does not exist in the IANA HTTP Status Code Registry. However, in some legacy systems and CDN error logs, 184 is used as a custom indicator for:
Screaming Frog SEO Spider is a professional-grade website crawler used to perform comprehensive technical SEO audits. While "neverb link" is not a standard industry term or a documented feature in official release notes for Version 18.4 screaming frog seo spider 184 neverb link