What are some alternatives?
When comparing Advanced Email Verifier and ipgeolocation.io, you can also consider the following products
Email Verifier - Email verifier app lets you verify email.
IP-API.com - Free IP Geolocation API - lookup any IP address
NoBounce Email List Cleaner - Email list validation & cleaning maximizes the efficiency of your email marketing campaigns and protects your email sender reputation.
Geo IP Tool - Find a geolocation of an IP address including latitude, longitude, city, region and country.
NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.