Comodo Secure DNS

Hi
Earlier today I checked to see if I had Comodo Secure DNS enabled. I was surprised to see that I had not.
I entered Preferred 8,26,56,26 and Alternate 8,20,247,20. These I found on the Internet and in this forum. At that stage found it difficult to access Web server on certain sites, this almost on a random basis.
I then entered 156,154,70,22 and 156,154,71,72 which I found on my own computer. Everything perfect since then.
My question is did I do right or is there perhaps a newer set of numbers available ?.
My Version number is 5.10
Ta in advance

The 8.26.56.26 and 8.20.247.20 are part of the Beta DNS service. The 156.154.70.22 and 156.154.71.22 are the older but still used, original service. The recommendation, currently, is to use 8.26.56.26 and 156.154.70.22. However, a number of people have reported problems with the beta DNS system recently.