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WISP and good practices, something essential

Telecolanza WISP

In many parts of the world new technologies and internet business models have proliferated. The lack of service in some places led to the appearance of ISP or WISP companies. In fact, big companies sometimes are not interested in providing this service because it is not profitable for them.

WISP, wireless internet service provider, are small internet and landline operators. These operators are tied to very strict laws which not all of them follow, and this is what we are going to focus on here.

Is you operator in the position to provide these services? which laws and regulations must be complied with? Is this affecting you as a client? We are going to solve this and other queries.

The business and operator advisor Daniel Romero from BandaLibre published the book ‘’WISP. Great ideas to generate regular incomes’’. In this book, he talks about good practices and legislation to be complied with, when we are undertaking a project with these characteristics. Without any doubt, it is a very recommended lecture.

Some of the observations we reflect on in this article come from this book, thank you Daniel.

The first requirement that must be made, is to be registered in the CNMC (National Commission of Markets and Competence). You have to be registered in the cases that interested you, as operators: FTTH, Landline, Mobile, etc. This enables you to carry out the activity, but can you install? Next question.

An operator has to be compulsorily registered, in the Ministry of Energy, Tourism and Digital Agenda. Moreover, it has to be registered as a type B installer for client installations and type D for base installations of propagation equipment. If this is not the case, it would be incurring a serious misconduct of the law of the Telecommunications law 346/2011, this stipulates the appropriate sanctions.

Telecolanza is signed up as you can check in the next screenshot of the Ministry, thus complying with the law:

registro instaladores

Part of the staff in Telecolanza are formed and have the ability and professional formation and accreditation to carry out this activity. Which is absolutely essential.


Which data processing treatment is your provider company using? A WISP has to be signed up in the AEPD (Spanish Data Protection Agency). Furthermore, it has to be audited by a company which certifies they are accomplishing the current legislation. If not, there could be a mistreatment of your private information and in breach of the law. This could result in penalties of up to 60.000€ for those who break the law. WISP companies use very sensitive personal information, such as bank data, credit cards, DNI, Passports, etc.

logos 2


Does my internet provider use shared connections or CG-NAT?

Some people may say, what is CG-NAT or shared public IP? This is what some internet providers are doing. Not only the WISP, but also some mayor internet providers.

This practise is very extended in WISP companies and also some mayor internet providers. This consists of the company hiring a line from a third party; Movistar, Vodafone, etc…, such as the ones you hire for domestic use. In the router they do a NAT and they give each of their clients a private IP address. This is an illegal practice, in fact in the contract of the domestic line they have hired, it states: “the impossibility of reselling the service to third parties”. Another matter would be to offer it for free, such as a HOTSPOT in coffee shops, shops, etc.

Let’s use a more common example; somebody who rents a property and the tenant rents it to a third party. This would be a similar illegality to the one we explained previously.

Each client has to have a public IP address in a dynamic way. Telecolanza not only gives this IP address, but is also the owner of the majority of these IPs. But also has others which are rented from the provider of the flow through an independent service BGP. The publica IPs where purchased fromRIP NCC.


How do I know if my IP is public or my provider has assigned me a private IP with carrier -Grade NAT?


Very simple, we can do a “trace route” or “tracert”. The process is as follows:

Firstly, we copy the IP address found in our device. You can find this in networks where you are connected too.

We open a page of the windows system (press the windows key, between ctrl +alt. Then write on the top address bar “cmd” and press intro).

In the MS-DOS window write: tracert xxx.xxx.x.xxx

(xxx.xxx.x.xxx is the IP that appears on your device)

Press intro and something such as this will appear:

If only a red arrow appears, as the one in the image, then you have a public IP. In the case that the number 2 appears then you have CG-NAT with its disadvantages. Not only because it is illegal, but also as it affects the connexion, browsing and other services. Such as Netflix, HBO and others. Not to mention the impossibility of opening ports for CCTV cameras, PS4, servers, VOIP, Skype…

With all of this, we go back to our first question:

Is your provider in a position to provide this service? If they don’t comply with all this, then a resounding NO.

If you join Telecolanza, you now know that you will be joining a company that complies with the law in all of its aspects. This does not mean that others don´t, but is yours a legal company?

Pedro Pulgarin
Telecommunications installer