| DNS Provider | TXT RR's? | Underscores ('_')? | Leading dash's/hyphens ('-')? | 127.0.0.1 in A RR's? | reversed ip's as hostnames |
|---|---|---|---|---|---|
| EasyDNS | No | No | Yes | Yes | Yes |
| Granite Canyon PublicDNS | Yes | No | No | Yes | Yes |
| RegisterFly.com | No | No | Yes | Yes | Yes |
| UltraDNS.com | Yes | Yes | Yes | Yes | Yes |
| Xname.org | No | No | Yes | Yes | Yes |
| ZoneEdit.com | Yes | No | No | Yes | Yes |