All published data is obtained from open sources

• Regional Internet Registry — open databases of Regional Internet registrars RIR;
• RIPE Network Coordination Centre (RIPE NCC) — for Europe, the Middle East and Central Asia;
• American Registry for Internet Numbers (ARIN) — for North America;
• Asia-Pacific Network Information Centre (APNIC) — for Asia and the Pacific;
• African Network Information Centre (AFRINIC) — for Africa and the Indian ocean region.
• Latin American and Caribbean Network Information Centre (LACNIC) — for Latin America and the Caribbean;
• IANA — The Internet Assigned Numbers Authority;
• ip-api.com — international geolocation database;
• IP2Location™ — open-source IP address geolocation database;
• check-host — checking availability and ping of ip addresses;