StackHal’s Toolbox for the Unglamorous Parts of the Web

Field notes

The homepage divides the collection into four working areas and gives every utility its own task-focused description. Listed examples include a visual IPv4/IPv6 subnet-overlap matrix, a DNS delegation chain tracer spanning root, TLD, authoritative, and anycast resolvers, and a PKPass inspector that examines manifests and PKCS#7 certificates. The site says calculations remain in the browser and that crawled reports may be cached, while results are intended to expose evidence and limitations alongside conclusions.