Nginx, which produces software to operate web servers, has raised a further $8m from investors including Telstra to boost its series B round to $38m.

US-based IT server software developer Nginx has raised $8m in a series B extension led by telecommunications company Telstra’s corporate venturing arm Telstra Ventures, increasing the round to $38m.

Venture capital firms New Enterprise Associates (NEA), eVentures, Runa Capital and Index Ventures also participated in the extension, which represented the round’s third tranche.

NEA led the $10m first tranche in 2013, which also featured eVentures, Runa, MSD Capital and angel investor Aaron Levie. It also led the $20m second close…