I'm hoping someone on the list can help confirm that I'm not going insane. I have a customer with the domain 'mtrsd.k12.ma.us' The domain should be handled by our DNS servers (dns-auth1.crocker.com & dns- auth2.crocker.com) The customer has an A record for www.mtrsd.k12.ma.us pointing to their web server The customer has subdomains for each school in the district which have www records pointing to their web server via CNAME Everything looks like it is configured properly on my servers but the customer is reporting that certain parents (VerizonDSL, Comcast, DirectWAY) can connect to certain website and not others. At this point I think the problem is with the DNS servers at their ISP. Can someone confirm my sanity? My zone of control starts at mtrsd.k12.ma.us I do not have control over k12.ma.us What do you all see for sanderson.mtrsd.k12.ma.us & www.sanderson.mtrsd.k12.ma.us. ; <<>> DiG 9.2.2 <<>> @204.97.12.2 mtrsd.k12.ma.us NS ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 522 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;mtrsd.k12.ma.us. IN NS ;; ANSWER SECTION: mtrsd.k12.ma.us. 258796 IN NS dns-auth2.crocker.com. mtrsd.k12.ma.us. 258796 IN NS dns-auth1.crocker.com. ;; Query time: 39 msec ;; SERVER: 204.97.12.2#53(204.97.12.2) ;; WHEN: Thu Sep 29 09:29:28 2005 ;; MSG SIZE rcvd: 92 ; <<>> DiG 9.2.2 <<>> @204.97.12.2 sanderson.mtrsd.k12.ma.us NS ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15880 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;sanderson.mtrsd.k12.ma.us. IN NS ;; ANSWER SECTION: sanderson.mtrsd.k12.ma.us. 259200 IN NS dns-auth2.crocker.com. sanderson.mtrsd.k12.ma.us. 259200 IN NS dns-auth1.crocker.com. ;; Query time: 2 msec ;; SERVER: 204.97.12.2#53(204.97.12.2) ;; WHEN: Thu Sep 29 09:31:15 2005 ;; MSG SIZE rcvd: 102 ; <<>> DiG 9.2.2 <<>> @204.97.12.2 www.sanderson.mtrsd.k12.ma.us A ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52155 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;www.sanderson.mtrsd.k12.ma.us. IN A ;; ANSWER SECTION: www.sanderson.mtrsd.k12.ma.us. 86400 IN CNAME www.mtrsd.k12.ma.us. www.mtrsd.k12.ma.us. 51 IN A 159.250.29.161 ;; Query time: 48 msec ;; SERVER: 204.97.12.2#53(204.97.12.2) ;; WHEN: Thu Sep 29 09:31:52 2005 ;; MSG SIZE rcvd: 81 -- Matthew S. Crocker Vice President Crocker Communications, Inc. Internet Division PO BOX 710 Greenfield, MA 01302-0710 http://www.crocker.com