A collection of free single-purpose online tools for web developers...
Brought to you by Stefan Judis
(Website, Twitter, GitHub)
and 137 lovely people:
DNS resolution and web UI for the dig CLI
Design IPv4 addressing scheme for a cloud VPC or a physcial DC.
Design IPv6 addressing scheme for a cloud VPC or DC
Generate an RFC 4193 compliant Global ID and/or Subnet ID for your IPv6 network