I received some interesting HF frequencies from a scanner listener in the UK.
3137 kHz = Scope/Ale
4724 kHz = HF-GCS/TASCOM primary
5708 kHz = Scope/Ale
6721 kHz = Scope/Ale
6739 kHz = HF-GCS
8992 kHz = HF-GCS
9025 kHz = Scope/Ale
11175 kHz = HF-GCS primary
11226 kHz = Scope/Ale
13200 kHz = HF-GCS/TASCOM
13215 kHz = Scope/Ale
15056 kHz = HF-GCS/TASCOM
18003 kHz = Scope/Ale
23337 kHz = Scope/Ale
DISA (Secure Internet Protocol Router Net)
2998 kHz = San Francisco
4666 kHz = San Francisco
5702 kHz = DISA
6532 kHz = San Francisco
8903 kHz = San Francisco
11181 kHz = DISA
11384 kHz = San Francisco
13300 kHz = San Francisco
15091 kHz = DISA
17904 kHz = San Francisco
21985 kHz = San Francisco