Alncom will kick off a new fibre build during the summer to cover 1,454 premises north of its HQ in Alnwick.
Homes and businesses in Seaton Sluice can now access full fibre services after residents applied for free Government broadband vouchers.
Openreach encouraged community action with a letter asking people living and working in the area to join their Fibre Community Partnership (FCP) programme.
After enough residents committed to ordering a full fibre service, Openreach worked with the local community to build a customised, co-funded network.
Louise Thompson, Openreach’s Regional Engagement manager, said: “It usually takes around 12-18 months from a Fibre Community Partnership Programme being agreed to the first premises ‘going live’ but this has been turned round in less than six months which is a huge achievement.