2300 Mauritius

It's a blocked number that it's in your blocked text folder.

According to Reddit user serial-hobbyist52, the better answer is:

Apparently a lot of people have been noticing in their usage logs an incoming text from 2300 from the location Mauritius, and I wanted to shed some light on the situation in case you were wondering. From the digging that I did, it looks like here is the info you may be looking for. It's a long one so buckle up.

TLDR:>! It's likely a harmless bug that is causing people concern but is doing nothing more than that.!<

When an MMS is sent or received, it doesn't travel the same way as a regular SMS. The message usually goes through a Multimedia Messaging Service Center (MMSC) before being delivered to the recipient. El número 2300 might represent a routing or service number used internally by the telecom provider to process these messages. It's likely that this number is used to route MMS messages through the carrier's network, which is why it shows up in the usage data. Some carriers use short codes or specific numbers (like 2300) for internal system messages. These messages may not be visible in your messaging app but can still appear in usage logs.

The number could be related to a specific gateway or server handling the MMS traffic. It's part of the infrastructure, and the end-user is not expected to interact with it directly. It's not even supposed to be viewable by customers in their usage logs because it's not necessary for the user to know, and also like what is happening now: Many people are worried about what this is and why it's in their usage logs. If you see the number 2300, it's not a cause for concern. It's simply a reflection of the network's handling of your MMS messages.

The mention of "Mauritius" in the usage data was a weird one though, but I found that it's likely related to the underlying infrastructure and routing mechanisms used by the carrier for processing certain types of messages or data. Sometimes, network routing for specific services, especially international messaging or MMS, might involve servers or gateways located in different countries. Mauritius could be the location of a gateway or server that the telecom provider uses, even if the message or data isn't actually going to Mauritius. It's likely that this is a bug that has arisen where MMS texts are routing to 2300 and the developers did not add the 2300 number to the "don't show this to customers" list.

If you made it this far, thanks for reading. Also, good on you for staying vigilant and watching out for your own account security. Make/keep a strong password, use two-factor authentication, and always make a strong account PIN number and remember it. Write it down dammit! T-Mobile has been made aware of this issue by several people and will probably push an update soon to relieve your stress.