W3C_Validator/1.3 http://validator.w3.org/services
W3C_Validator/1.3
W3C_Validator/1.305.2.12 libwww-perl/5.64
W3C_Validator/1.2
W3C_Validator/1.654
W3C_Validator/1.767
W3C_Validator/1.1
W3C_Validator/1.3 libwww-perl/6.13
W3C_Validator/1.781