SUMMITOPS LABS

NETWORK
TOOLS.

Quick, practical tools for common networking and IT tasks.

IP / Subnet Calculator

Calculate IPv4 network information from an IP address and CIDR prefix.

IP ADDRESS

CIDR

Network Address —

Subnet Mask —

Broadcast Address —

First Usable Host —

Last Usable Host —

Usable Hosts —

Quickly find common TCP and UDP ports and their associated services.

SEARCH PORT OR SERVICE

Query common DNS records for a domain.

DOMAIN

RECORD TYPE

Enter a domain to query DNS records.

Look up domain registration information using RDAP.

DOMAIN

Enter a domain to view registration information.