Reverse DNS is a site that displays reverse lookup results for approximately 4.3 billion IPv4 addresses in a map-like manner. This is what it looks like when you access the site. I can't tell what it ...

Over the past few days, we have found that several ISPs put us on some type of block list that didn’t allow our mail through. … One told us that the only way it would allow the mail through would be ...

Last week we began to discuss the records that DNS servers use to describe their view of the name space they are responsible for. We didn’t get beyond the Start of Authority (SOA) record, but as that ...

No, it's not possible, simply because anyone can point their DNS server to an IP address. In fact, it often works that way with Web hosts -- they use one IP address for a number of shared plans, and ...

Having blundered and finessed my way through several problems setting up VPN connections over a wireless AP for some laptops, I am left with just one hurdle to tackle:<BR><BR>Some print charging ...

DNS Hijacking is a major issue in the connected world. Every unique instance you type an address into your address bar your internet-connected device makes a request to a DNS server to get the actual ...

Google has confirmed that there are some GoogleBot useragent spiders not properly passing verification protocol. Savvy webmasters noticed that GoogleBot over the .249.70.0 /24 IP range was not ...

The Address (A) record associates a domain name or subdomain with an IP address, which is the primary purpose of the DNS system. The @ sign identifies "this domain;" for example, A @ nnn.nnn.nnn.nnn ...

We host our own Web page, but DNS is handled by ZoneEdit . ARIN. ARIN is the master authority for assigning IP address ranges to ISPs. You can go to ARIN and do a whois search to see if what is known ...