Free dns lookup software for mac

Reverse Lookup Widget performs a phone number reverse lookup.

Search by phone number for information on phone number owner and address.

Add result to address book with a simple click.

The easiest way to add your friends to your address book!

Usage:
Enter a phone number and it returns address info about the owner of the number.
Click on the address book link and add the contact to your address book, one of the easiest ways to add your friends to your address book!

Callsign Lookup is a simple, small utility that allows the amateur radio operator with a dedicated Internet connection (DSL, cable) to quickly access online callsign databases.

The program provides you with a small window that you can store in the corner of the screen and quickly access the online database of your choice through your the default web browser.

Accessing the online callsign databases can be done easily WITHOUT Callsign Lookup, but the goal is to provide easier accessibility and save a few clicks.

Unlockupd works around a bug in lookupd, a system service which is required for proper operation of Mac OS X. If lookupd fails, the system quickly becomes unusable. Unlockupd periodically checks lookupds status and forces it to restart should it fail.

WARNING: Although Unlockupd has undergone a significant amount of testing with no reported problems, this software should still be considered beta-quality. It is only being made available now since the cat snuck out of the bag on the darwin-dev mailing list.

Technical Details - Lookupd is the lookup and caching daemon responsible for handling NetInfo, DNS, and other such requests. Applications typically do not access lookupd directly, but rather, use standardized library functions (such as gethostbyname for DNS) which access lookupd on the applications behalf.

Lookupd has a bug (rdar://3632865) in its cache cleanup code that causes it to randomly crash. CrashReporter, the system crash log agent, does not properly handle lookupd crashes and as a result, when lookupd crashes, the process is not terminated. Since lookupd has not terminated, mach_init does not respawn lookupd. From this point, any application that attempts to access lookupd either directly or indirectly, will hang.

Once lookupd stops responding it becomes difficult but not impossible to recover the system to a usable state. One technique which works but is not recommended (for obvious reasons), is to leave a root shell running and `killall -9 lookupd` when it becomes obvious that lookupd has died (sudo does not work, since it requires lookupds services, as does opening a new terminal window).

How unlockupd works - Unlockupd is a small daemon which periodically polls lookupd. If it detects that lookupd is not responding, it makes a note in the system log and forces lookupd to terminate.

Mac OS X Server and Mac OS X rely heavily on working DNS to function. Mac OS X Server in particular must having working DNS for many services to function reliably.
DNS Helper takes the work out of creating the files that BIND needs to run. Simply fill in the blanks and go.
Main features:
- Create zone, domain, and named.conf files for your BIND server without the need to understand the formatting of those files.
- It can set the needed permissions and ownership on the files after they are created.
- It can install the files for you or save them to any location you wish.
- It can control BIND and show you your BIND log files.
- It can setup MX records.
Enhancements:
- Finally fixed the stupid bug that prevented hostnames from containing numbers!
- Force users to authenticate when opening the app to prevent an error from occurring when checking /etc/hostconfig for startup options.

DNSetup is a set of AppleScripts to create the configuration files for the DNS server under Mac OS X Server 10.x.
Currently there is no error checking so entering data should be done carefully.
The scripts place all created files on the desktop and must be moved to the proper location on the hard drive.
Enhancements:
- Fixes a bug with MX and CNAME records in the zone config.

DNSUpdate is a client that connects to the DynDNS.org free domain name server service.
With DNSUpdate, you can watch at every Internal Interface and also supports Routers (using an external test) and Proxies (without passwords).
Enhancements:
- Universal application and daemon
- Use of Tigers launchd. This makes rebooting after install useless

GeoIP Lookup web service is an experimental tool to generate Google Earth plugins from traceroute outputs.

Have you ever wondered where the heck in the world was the IP Address 158.42.4.23 that you see in your blog statistics? Once there was an app called Visualroute that tried to plot on a 2D world map each hop on the route from your computer to that IP address.

But, man... 2D sucks! I want to see the route in that gorgeous Google Earth 3D map! So I built this service that creates Google Earth Plugins using geographical information from My IP Address lookup service.