Blacklisted IP address from Directo

Dear Verizon,

During yesterday we had an apparent blacklisted IP address: {edited for privacy} at your server xe-0-0-2.GW9.DFW7.ALTER.NET [] for about 4 hours from around 11:30 to 15:30 hrs CST, as the Mexican Telmex/Uninet carrier informed us causing a service interruption for some of our customers. We aren’t sure if the blacklisting was done at your side but any information regarding this subject will be highly appreciated.

The IP {edited for privacy} is used for one of our VoIP servers to host SIP extensions for telemarketing traffic coming from our Call centers traffic.

The following traceroutes show how we were able to reach another of our IP addresses but not the {edited for privacy} one:

C:\Users\User>tracert {edited for privacy}

Traza a {edited for privacy} sobre caminos de 30 saltos como máximo.

1   <1 ms     1 ms     1 ms

2   24 ms   19 ms   19 ms []

3   57 ms   39 ms   39 ms


4   38 ms   49 ms   39 ms xe-0-0-2.GW9.DFW7.ALTER.NET []

5   37 ms   39 ms   39 ms 0.ae2.XL4.DFW7.ALTER.NET []

C:\Users\User>tracert {edited for privacy}

Traza a {edited for privacy} sobre caminos de 30 saltos como máximo.

1     1 ms   <1 ms     1 ms

2     4 ms   19 ms   20 ms []

3   49 ms   39 ms   39 ms []

4                     *     Tiempo de espera agotado para esta solicitud.

The issue is solved now but may I kindly ask you to verify why the IP address {edited for privacy} was blacklisted and which process we should follow to get this IP address whitelisted ?

As reference, our company is a well-known Telecom carrier with FCC214 license since 1998. Our websites:<> and<>.

Thanks in advance for your attention. Rgds.

Re: Blacklisted IP address from Directo

Hi AVillarreal,

Your issue has been escalated to a Verizon agent. Before the agent can begin assisting you, they will need to collect further information from you. Please go to your profile page for the forum and look at the top of the middle column where you will find an area titled "My Support Cases". You can reach your profile page by clicking on your name beside your post, or at the top left of this page underneath the title of the board.

Under "My Support Cases" you will find a link to the private board where you and the agent may exchange information. The title of your post is the link. This should be checked on a frequent basis, as the agent may be waiting for information from you before they can proceed with any actions. To ensure you know when they have responded to you, at the top of your support case there is a drop down menu for support case options. Open that and choose "subscribe". Please keep all correspondence regarding your issue in the private support portal.