Free, no key, no registration. Every endpoint returns JSON and sends
Access-Control-Allow-Origin: *, so you can call it from scripts,
cron jobs or the browser.
https://ipv4.mansip.lv/?api=ipforces IPv4https://ipv6.mansip.lv/?api=ipforces IPv6https://mansip.lv/?api=ipwhichever you connect withhttps://mansip.lv/?api=rdnsreverse DNS + FCrDNShttps://mansip.lv/?api=geocountry, city, ISP, ASNhttps://mansip.lv/?api=mx&domain=gmail.comMX recordshttps://mansip.lv/?format=jsoneverything at once{ "ip": "216.73.216.195", "version": "IPv4" }