NetCologne Gesellschaft für Telekommunikation mit beschränkter Haftung

65 0 netblocks since 2026-07-05

2026-07-05 peak 65 2026-07-19

nc.de netcologne.de

Same operating domain nc.de

Separately-registered clusters whose addresses resolve (reverse DNS) under the same domain as this one — strong evidence they are the same organisation, even where the names differ. Namesakes on other domains are excluded.

Same name family

Separately-registered clusters whose names share “NetCologne Gesellschaft” — often per-country or per-system registrations of the same brand, occasionally a different organisation sharing the name. Not counted in this organisation's own footprint.

Sub-allocations under carriers

IP blocks an ISP reassigned to a similarly-named customer — decoded from the ISP's own naming convention, not a direct registration.

RPKI hygiene: F how networks compare →

3.1% of checked blocks have valid RPKI ROA coverage (2 of 65)

No discrepancies found among checked blocks.