Reference

IANA Port lookup:
 http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml

IANA TLD domain lookup:
 http://www.iana.org/domains/root/db

MAC OUI lookup:
 http://www.wireshark.org/tools/oui-lookup.html

Cisco L7 Decrypt:
 http://www.ibeast.com/content/tools/CiscoPassword/index.asp

Global DNS Propagation:
 https://www.whatsmydns.net/

Kloth Services:
 http://www.kloth.net/services/