http://labs.programming-designs.com/portscanner/

input domain name or ip address specify port range (1 min, 65535 max)

https://www.securitymetrics.com/portscan.adp

Comprehensive - Port Scan - 65,535 TCP ports & many UDP ports - Thousands of Vulnerability Assessment tests - Mail Proxy test for open relays - Test for hundreds of default username/passwords - Website html spidering for XSS & other leaks

http://www.t1shopper.com/tools/port-scan/result/