AS10755 DARTMOUTH-AS

DARTMOUTH-AS is Dartmouth College, the Ivy League university in Hanover, New Hampshire. It is a straightforward campus network: one institution, one legacy /16, one IPv6 block.

What it's used for

RIS observes exactly 1 announced IPv4 prefix — 129.170.0.0/16, 65,536 addresses — plus 1 IPv6 prefix (2604:5f00::/32) and 5 observed neighbours. The clean single-prefix announcement is itself a signal of institutional maturity: the college got a Class B allocation early, never had to bolt scraps onto it, and has never needed to deaggregate it for traffic engineering.

What sits behind those 65,536 addresses is the usual university mix: student residential networks and campus wireless, faculty and departmental systems, library and administrative services, research computing, and the public web presence. A /16 is generous for a college of Dartmouth's size, which is why campuses of this vintage were historically among the last places on the internet where you could still find an unmodified, publicly routable address on a desktop.

Five neighbours is consistent with a research campus: commercial transit for general traffic, plus connections toward the regional research-and-education network and on to Internet2, which is how US universities reach one another and reach large-scale research facilities without crossing the commodity internet.

Notable

Dartmouth has a genuine claim on computing history — BASIC was created there in 1964, and the Dartmouth Time-Sharing System that ran it was one of the earliest efforts to put interactive computing in front of ordinary undergraduates rather than specialists. The campus network descended from that tradition was an early and unusually complete one.