| KPN: Verdere omzetdrukapr '18 - Column |
| Liveblog: Superdonderdagapr '18 - Column |
| KPN verkoopt iBasis aan Tofone Globalmrt '18 - Column |
| Arend Jan Kamp over KPNjan '18 - Video |
| Liveblog: KPN, ING en Arcelorjan '18 - Column |
| Nederlandse telecommarkt consolideertdec '17 - Column |
| Liveblog: Altice en Pharmingdec '17 - Column |
| Forza KPN!dec '17 - Column |
| Liveblog: Takeaway en Adyendec '17 - Column |
| Arend Jan Kamp over KPNdec '17 - Video |