We share our CDN nodes with a large number of ISP's who don't have their own CDN nodes. So the number you see doesn't actually reflect the true Vocus brands results, but a larger portion of the NZ ISPs (many who are RBI or Community Wireless).

 

Implying there aren't community wireless providers who sit behind sparks CDN nodes?...

 

Well, Vocus sends CDN traffic to downstream ISP's over "domestic" links, where as Spark only sends it over "International" or blended services, so downstream ISP's tend to try and get CDN from Vocus not Spark as Vocus plays more fair. Downstream ISP's only have a Spark domestic link because they care enough about their customers performance that they would prefer to pay rather than have traffic trombone internationally. Its a novel thing, but some do care about even small customer performance issues.

How reliable is the Cloudflare Auckland node anyway?

Seems to bounce back and forth on a weekly rotation between Sydney (Equinix) and Auckland (APE) on this connection. Presumably ISP has some sort of partial transit arrangement with Vocus in this case.

traceroute to www.geekzone.co.nz (104.24.2.14), 30 hops max, 38 byte packets
 1  192.168.1.250 (192.168.1.250)  1.090 ms  1.072 ms  0.978 ms
 2  203.152.96.105 (203.152.96.105)  2.705 ms  3.077 ms  4.829 ms
 3  10.20.4.18 (10.20.4.18)  17.617 ms  16.541 ms  18.015 ms
 4  default-rdns.vocus.co.nz (101.98.10.78)  16.467 ms  17.595 ms  17.948 ms
 5  *  *  *
 6  4610.syd.equinix.com (45.127.172.93)  39.749 ms  39.387 ms  39.850 ms
 7  13335.syd.equinix.com (45.127.172.154)  40.923 ms  40.687 ms  40.727 ms
 8  104.24.2.14 (104.24.2.14)  40.881 ms  41.026 ms  41.437 ms