Fast tools for the details that matter.

Focused utilities for network engineers, DevOps teams and anyone who would rather calculate once and move on.

IP & diagnostics

Tool	Description	Open
IP / CIDR Calculator	Inspect IPv4 and IPv6 networks, ranges, masks and address counts without sending data anywhere.	Open tool
IP Format Converter	Move between canonical, expanded, integer, hexadecimal and binary address representations.	Open tool
What Is My IP?	Reveal the public address this browser uses to reach the internet and identify its IP family.	Open tool
IP Inspector	Classify an address locally, then optionally inspect its network, location, risk and reverse DNS.	Open tool
CIDR Compare + Aggregator	Compare aligned networks and collapse mixed IPv4 and IPv6 prefix lists without losing precision.	Open tool
RDAP / ASN Lookup	Inspect public registration, allocation and routing-origin context for an IP, prefix or ASN.	Open tool

Network planning

Tool	Description	Open
Subnet / VLSM Planner	Allocate IPv4 LAN, point-to-point and loopback networks or plan IPv6 child prefixes.	Open tool

DNS

Tool	Description	Open
PTR Generator	Build compact or expanded IPv4 reverse zones for BIND and local-data-ptr records for Unbound.	Open tool
DNS Workbench	Query common records and resolver-validated DNSSEC through explicit Cloudflare and Google DoH requests.	Open tool

Routing & policy

Tool	Description	Open
Prefix-list / ACL Generator	Turn one ordered policy into route-filter syntax for Cisco, Juniper, MikroTik, FRR and BIRD.	Open tool
RPKI / ROA Validator	Check a prefix and origin ASN as Valid, Invalid or NotFound using RIPEstat.	Open tool

Connectivity

Tool	Description	Open
MTU / MSS Calculator	Model encapsulation stacks, Ethernet wire cost and practical TCP MSS commands for common platforms.	Open tool

DevOps & automation

Tool	Description	Open
Cron & Systemd Timer Builder	Build timezone-aware Cronie, Kubernetes CronJob and systemd timer artifacts with upcoming runs.	Open tool
Kubernetes Resource Calculator	Calculate requests, limits, scheduling totals and QoS across containers, init containers and Pod-level resources.	Open tool

Developer

Tool	Description	Open
ASCII Art Generator	Turn short text into terminal-ready FIGlet banners with a few useful controls.	Open tool