# Misbehaving nodes

**URL:** <https://www.thethingsnetwork.org/forum/t/misbehaving-nodes/46066>\
**Category:** End Devices (Nodes)\
**Created:** [March 28, 2021, 6:55am UTC](https://www.thethingsnetwork.org/forum/t/misbehaving-nodes/46066 "2021-03-28T06:55:30Z")\
**Posts on this page:** 1\
**Showing post:** 77

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**Author:** ![arjanvanb](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/arjanvanb/32/46626_2.png) [@arjanvanb](https://www.thethingsnetwork.org/forum/u/arjanvanb)\
**Post date:** [December 31, 2021, 2:12pm UTC](https://www.thethingsnetwork.org/forum/t/misbehaving-nodes/46066/77 "2021-12-31T14:12:26Z")

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> [@pe1mew](#):
>
> **KPN** has 2286 active end devices that send 20425 packets. **TTN** has 364 active end devices that send 79451 packets.

Just a minor aside: beware that the DevAddr is not unique. I don’t know if KPN is doing any segmentation, but surely TTN is not randomly using all 25 bits it can use for its prefix as assigned by the LoRa Alliance. Instead, TTN probably only uses `2601xxxx` and `260Bxxxx` for its community network in the Netherlands. And (at least in V2) [it then uses more segmentation to define specific classes](https://www.thethingsnetwork.org/docs/lorawan/addressing/#devices):

> Within a region, the NetworkServer is responsible for assigning device addresses. We are using prefixes here too for different device classes (for example, [ABP](https://www.thethingsnetwork.org/docs/lorawan/#activation-by-personalization-abp) devices in the `eu` region start with `0x26011`) or to shard devices over different servers

If that still holds in V3, then TTN has about 2 × 1.5 bytes = 8,192 unique values for, say, an OTAA DevAddr in The Netherlands. So, some of the unique device addresses you have seen _may_ be multiple devices.

See also [Update on DevAddr Block Assignments on The Things Stack Community Edition clusters](https://www.thethingsnetwork.org/forum/t/update-on-devaddr-block-assignments-on-the-things-stack-community-edition-clusters/53597).

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