AS10493 — GCN-AS
AS10493 announces 3 IPv4 prefixes covering 1,536 addresses and 0 IPv6 prefixes.
About this network
GCN-AS belongs to Grand Central Networks Inc., a very small US company (business listings put it at 14 Vanderventer Ave, Port Washington, New York, with a headcount in single figures). It should not be confused with GrandCentral, the VoIP startup Google turned into Google Voice, nor with Grand Central Station Internet Services (AS15251) — three unrelated holders sharing a name.
What it's used for
Running the company's own network estate, most of which physically sits in Chicago rather than at its registered New York address. RIS sees 6 announced IPv4 prefixes totalling 1,536 addresses: a contiguous 172.81.88.0/24–172.81.91.0/24 block, plus 74.201.43.0/24 and 50.31.163.0/24. No IPv6 is announced, and 2 neighbours are observed.
Notable
The single sampled PTR — chicago-pwr1.grand-central.net — is the most informative thing in the pack. It is first-party reverse DNS: the operator's own domain on its own router, in a Chicago facility. That matters because the prefix list otherwise has a slightly scattered look (three unrelated ARIN blocks for one tiny company), and scattered space with third-party or absent rDNS is how address-leasing shells present. Self-named infrastructure inside the range argues the opposite: a real, if minor, operator running its own kit.
With two upstreams and no peering to speak of, there is no transit role here. The honest read is a small hosting / network-services footprint — but the public evidence is thin, and this classification is held at low confidence rather than asserted.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 50.31.163.0/24
- 74.201.43.0/24
- 172.81.88.0/22
Upstream networks
Adjacent networks
awaiting query
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