Noida · India

Noida's entry is colocation without an exchange. The registry has no internet exchange in the city and no exchange participants, so all 257 network presences sit inside 11 facilities. Sify Greenfort - Noida holds 146 of them, CtrlS Noida DC1 49, Netmagic Noida 23 and Web Werks NCR 2 21, with the remaining sites in single figures or empty. One facility, NIXI Noida Netmagic, carries the name of the national exchange operator and three networks, but no exchange fabric is listed for the city. Networks here interconnect through facilities and private links rather than a local peering point.

An address that geolocates to Noida is an address whose operator wrote Noida into the registry record. The record identifies the organisation holding the block, and organisations register blocks at an office address that can be far from the hardware. Indian mobile networks concentrate subscriber traffic into a handful of gateways, so a Noida label on a mobile address describes the operator's paperwork rather than a phone in Noida. Geolocation databases take that published location as their starting point.

For a Noida address, the origin ASN and the prefix record are worth more than the city string, especially with no exchange data to cross-check. Look at the netname on the exact block and at the organisation behind it, then ask whether that network is one of the tenants filling the 257 facility slots or a mobile operator announcing a wide pool. A city with no recorded exchange gives geolocation less to work with, and the answer degrades accordingly.