IP Address

An IP address is the numerical identifier assigned to a network interface on an IP network. IPv4 addresses are 32 bits (about 4.3 billion total); IPv6 addresses are 128 bits and effectively limitless. Operators allocate IP addresses statically or via DHCP/NDP, and increasingly share IPv4 addresses across many subscribers using CGNAT.

Categories: Identity and SubscriberOperations and BusinessInternet and Routing

IP Address in context

Subscriber identifiers (IMSI, SUPI, MSISDN, IMEI) anchor authentication, charging and lawful interception. Any protocol that leaks a permanent identifier is treated as a privacy defect, which is why 5G introduced SUCI concealment on the air interface.

OSS/BSS platforms hold the highest-value subscriber and revenue data on the operator side, are heavily targeted for fraud and insider abuse, and are in scope for NIS2 and the UK Telecoms Security Act.

To place IP Address in the wider telecom-security picture, review DSLAM, 3GPP, CGNAT, MAC Address, Packet and WCDMA: each entry cross-references back to this page so you can walk the topic in either direction.

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