FAQs#

Global IP Support#

Does Global IP support IPv6 lookup?#

Yes, Global IP supports IPv6 Lookups.

Does the IP web service support XML?#

No, Global IP only supports the JSON format for requests and responses.

Accuracy#

How accurate is the Latitude/longitude returned?#

Melissa Data’s Global IP uses 20 different techniques to determine the physical location of an IP address.

This is the secret sauce behind a better understanding of the topology of the internet.

  1. ASN/BGP routes

  2. Mobile Carrier owned IPs Database

  3. Partner submitted Internet Topology

  4. Proxy Data lists

  5. Domain Data

  6. Proprietary Clustering Analysis algorithms

  7. Reverse DNS information

  8. Wireless WIFI Endpoints Map

  9. Domain Expansion algorithms

  10. Company Name Databases

  11. Organization Name databases

  12. Whois data

  13. T1, t3, OC3, OC12 Registries

  14. Cable, Dial up, DSL registries

  15. Geography

  16. Realtime IP Connections through Skyhook Wireless

  17. Regional Internet Registries

  18. Web Spidering technology

  19. Dynamic IP Pool Mapping

  20. DSLAM, CMTS, POP Server analysis

It is not going to be true location, but it is calculated using several techniques to get the best possible accurate lat/long centroid.