dig +trace www.tumblr.com *snip* tumblr.com. 300 IN SOA pdns1.ultradns.net. hostmaster.tumblr.com. 2012121602 86400 7200 604800 3

dig +trace www.tumblr.com *snip* tumblr.com. 300 IN SOA pdns1.ultradns.net. hostmaster.tumblr.com. 2012121602 86400 7200 604800 300 ;; Received 108 bytes from 204.74.108.1#53(204.74.108.1) in 21 ms Looks like their dns is down alright. You could try in your hosts file: 72.32.231.8 www.tumblr.com tumblr.com The ip is from their whois info and appears to be giving the We're sorry error message.