Network & Monitoring
Utilities
Free utilities for network engineers, DevOps, and developers. Calculate subnets, check SSL certificates, test DNS, and more.
What is My IP
Instantly discover your public IP address, geolocation, ISP provider, network details, and browser information.
IP Subnet Calculator
Calculate IPv4 and IPv6 subnets with CIDR notation. Get network address, broadcast, usable hosts, and masks.
MX Lookup
Check MX (Mail Exchange) records for any domain. Verify email server configuration and resolve IP addresses.
Blacklist Checker
Check if your IP or domain is listed on 70+ email blacklists (RBL/DNSBL). Protect your email reputation.
SSL Checker
Verify SSL/TLS certificates, check expiration dates, test certificate chains, and analyze SSL configuration.
Website Speed Test
Test website loading speed with detailed waterfall chart, performance metrics, and optimization recommendations.
DNS Lookup
Comprehensive DNS lookup tool. Check A, AAAA, MX, NS, SOA, TXT, CNAME, CAA records with detailed TTL.
Port Scanner
Check if TCP/UDP ports are open, scan common service ports, and identify running services on any host.
Traceroute Tool
Trace the network path to any host. View hop-by-hop routing with latency, IP addresses, and geographic location.
Uptime Calculator
Calculate SLA uptime percentages, convert between nines (99.9%, 99.99%), and see allowed downtime.
Ready to stop the
downtime panic?
Join hundreds of developers who sleep better at night knowing AtomPing is watching their stack.
No credit card required · Cancel anytime · 99.9% Uptime SLA