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.ipv4.mansip.lv/?api=ipforces IPv4https://ipv6.ipv4.mansip.lv/?api=ipforces IPv6https://ipv4.mansip.lv/?api=ipwhichever you connect withhttps://ipv4.mansip.lv/?api=rdnsreverse DNS + FCrDNShttps://ipv4.mansip.lv/?api=geocountry, city, ISP, ASNhttps://ipv4.mansip.lv/?api=mx&domain=gmail.comMX recordshttps://ipv4.mansip.lv/?format=jsoneverything at once{ "ip": "216.73.217.85", "version": "IPv4" }