PTR(NORBERT_IPV4.split(".").pop(), "norbert.openstreetmap.org."),
PTR(ODIN_IPV4.split(".").pop(), "odin.openstreetmap.org."),
PTR(SPIKE06_IPV4.split(".").pop(), "spike-06.openstreetmap.org."),
PTR(SPIKE07_IPV4.split(".").pop(), "spike-07.openstreetmap.org."),
PTR(SPIKE08_IPV4.split(".").pop(), "spike-08.openstreetmap.org."),
PTR(NORBERT_IPV4.split(".").pop(), "norbert.openstreetmap.org."),
PTR(ODIN_IPV4.split(".").pop(), "odin.openstreetmap.org."),
PTR(SPIKE06_IPV4.split(".").pop(), "spike-06.openstreetmap.org."),
PTR(SPIKE07_IPV4.split(".").pop(), "spike-07.openstreetmap.org."),
PTR(SPIKE08_IPV4.split(".").pop(), "spike-08.openstreetmap.org."),