Open Port Check Tool

Here is a handy little port check tool we developed:

This tool will check for open ports and see if there are any services responding on that port.  It comes in handy when troubleshooting your network.  Specifically it helps in checking to see if your ISP blocks certain ports such as HTTP port 80 and SMTP port 25 (commonly blocked by major broadband residential ISPs).

Additionally if those ports are blocked, No-IP has a solution that will get around this block. Users with ISPs that block the standard http port can use the port 80 redirect feature available to all users.  This can be found in the member section why managing your host. No-IP also offers Mail Reflector and Alternate-port SMTP service for those with ISPs that block inbound and outbound SMTP port 25 respectively.

Keep in mind when using this port check tool you will need to open up the website from the same WAN IP address that you wish to check for open ports.

Changes to Stand-Alone Domain Registrations

Previously if a user was to buy a stand-alone domain registration without No-IP Plus they did not get the No-IP Enhanced service.  Today all domain registration customer regardless if they package the service with Plus get a complementary No-IP Enhanced service.

No-IP Enhanced is an upgrade to the No-IP Free service.  This service allows you to add more than 5 hosts under the No-IP provided sub domains, gain access to all host type options, and remove advertisements from web and port 80 redirects.

Way Back Machine: The Screen Savers

I was going through some of our archives today and stumbled across this video. This is a segment from “The Screen Savers” show on the former TechTV network talking about dynamic DNS. They really butchered what it is we do. None the less it was a quick moment in fame. I hope you enjoy!

No-IP Blog Online!

No-IP has started this No-IP blog to post some of the smaller changes that happen at No-IP and other interesting information that we think our users would find useful. Check back here for updates as we will try to post something every couple days.

No-IP Adds Text Record Support and SPF Wizard

Today No-IP announces the availability of DNS text record support and SPF record creation wizard. Text record support is necessary for the implementation of the email sending authentication scheme known as Sender Policy Framework (SPF).

The current SMTP standard allows anyone to send email with a forged email address. SPF is used to help identify forged senders that are used by many viruses, worms, and spam. SMTP servers that support SPF can easily detect forged senders and flag or delete messages from spoofed senders. In turn drastically reducing or completely eliminating worm viruses and spam that are sent through email on infected machines.

An SPF record describes to a mail server which mail servers are allowed to send email for a particular domain name. SPF records are simply a string of text published in a DNS TXT record. When an email is sent to an SPF enabled mail server it checks the SPF record to make sure that the email is coming from one of the mail servers that is authorized to send email for the particular domain.

Thousands of email providers and companies including Hotmail, AOL, and Google have begun publishing SPF records and have built SPF support in their spam filters. Microsoft has announced that they will begin filtering email that does not support SPF starting Oct 1st, 2004 and is urging ISP’s to begin publishing SPF records. feels this solution has great potential to stop the forgery of email and reduce spam and the propagation of viruses. In efforts to get all of our customers to publish SPF records No-IP has now added text record support and an easy to use SPF record wizard, which helps administrators easily create and modify their SPF records.

“SPF should be a boon to all legitimate mail providers,” said Joel Rasmus, Chief Operating Officer. “We are excited about the possibilities of better service for our customers and more reliable interactions with our peers.”

The SPF wizard and text record support is immediately available to all No-IP Enhanced and No-IP Plus customers.

About No-IP™
No-IP™, a subsidiary of Vitalwerks Internet Solutions, LLC, is a leading dynamic DNS and online services provider dedicated to helping companies and home users manage their Internet presence. No-IP™ offers a wide selection of online services, including domain registration, email solutions, server monitoring, and managed DNS to over three million users worldwide.