Related domains with label format-c at position 1

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1. www.ntp.format-c.pro
2. format-c.pro
3. ntp.format-c.pro
4. www.ns2.format-c.pro
5. ns2.format-c.pro
6. www.format-c.pro
7. www.ns1.format-c.pro
8. ns1.format-c.pro