| Serial | Label | Owner key | Owner | Description |
|---|---|---|---|---|
| 1644750016 (2022-02-13) | AS number 4242420420 | cb2d7f7227 | FOERTEL-DN42 | Choastreff Flensburg |
| 1518602435 (2018-02-14) | AS number 4242420420 | cb2d7f7227 | FOERTEL-DN42 | Choastreff Flensburg |
| 1512579645 (2017-12-06) | AS number 4242420420 | cb2d7f7227 | FOERTEL-DN42 | Choastreff Flensburg |
| 1509044428 (2017-10-26) | AS number 4242420420 | cb2d7f7227 | FOERTEL-DN42 | Choastreff Flensburg |
| 1454796007 (2016-02-06) | AS number 4242420420 | cb2d7f7227 | ORG-CTFL | Choastreff Flensburg |
| 1454792407 (2016-02-06) | AS number 4242420420 | cb2d7f7227 | ORG-CTFL | Choastreff Flensburg |
| 1454788808 (2016-02-06) | AS number 4242420420 | cb2d7f7227 | FOERTEL-DN42 | Choastreff Flensburg |
| 1429956006 (2015-04-25) | AS number 4242420420 | cb2d7f7227 | FOERTEL-DN42 | Fördefunk Flensburg |
| 1428256821 (2015-04-05) | AS number 4242420420 | cb2d7f7227 | FOERTEL-DN42 | Foertel |
| 1416179278 (2014-11-16) | AS number 4242420420 | cb2d7f7227 | WLANFABRIK-DN42 | WlanFabrik |