Arizona · network infrastructure

Arizona's networks cluster in the Phoenix metro without one building taking everything. PhoenixNAP counts 71 networks, EdgeConneX Phoenix in Tempe 41, Digital Realty PHX10 at 120 E Van Buren 35 and Iron Mountain AZP-1 32, with CyrusOne Phoenix at 16 and H5 Data Centers in Chandler 13. Tucson has one site of size, ark data centers at 12. Traffic meets locally through eight exchanges, though most are small. Ninja-IX Phoenix has 58 participants and DE-CIX Phoenix 36, while the other six each count six participants or fewer.

An Arizona IP address reports what the operator registered, and geolocation databases pass that record along unchanged. Mobile addressing weakens it further. AT&T, T-Mobile and Verizon aggregate subscribers behind regional gateways, so a phone in Tucson or Mesa can present an address that databases read as Phoenix, and a Phoenix session can appear in a different state when the serving gateway registers there. The state's 295 network presences describe fixed buildings, not devices.

The origin ASN and the netname on the prefix carry more weight than a state label. Query the specific address, see which ASN announces it, then read the registered netname on that block. Verizon publishes seven mobile ASNs, AT&T five and T-Mobile five, so an origin lookup pins the carrier and leaves the city open. Arizona's 114 peering networks and 30 facilities count interconnection points, which is separate from where a subscriber connects.