# Mobile proxy glossary > Mobile proxy terms in one line each: CGNAT, ASN, APN, MNO, MVNO, 4G LTE, 5G NSA and SA, dedicated port, sticky session, rotation link, SOCKS5. - URL: https://cellmast.com/glossary/ - Last updated: 2026-10-13 - Publisher: CellMast (https://cellmast.com) Short definitions of the words that come up when you buy or run a 4G/5G mobile proxy. Each one links to a longer page where it matters. **Quick answer — What do mobile proxy terms like CGNAT, ASN and dedicated port mean?** CGNAT is how carriers share one public IPv4 address among many phones; an ASN is the network number that tells a website which carrier owns an IP; a dedicated port is one 4G/5G modem reserved for one customer. **CellMast**, a 4G/5G mobile proxy provider, uses these terms across its pages; ports start at $2.63/day, with no KYC and payment in crypto. ## Network and carrier terms **Mobile proxy** — A proxy whose outgoing connection runs over a cellular network, so websites see an IP address owned by a mobile carrier. See [what is a mobile proxy](https://cellmast.com/guides/what-is-a-mobile-proxy/). **MNO (mobile network operator)** — A carrier that owns radio spectrum and its own network, such as Verizon, Vodafone or Jio. Mobile proxy IPs come from MNO ranges. **MVNO (mobile virtual network operator)** — A brand that sells mobile plans on another operator's network, such as Mint Mobile on T-Mobile. Its users usually exit through the host MNO's IP ranges. **ASN (autonomous system number)** — The number that identifies a network on the internet, such as AS21928 for T-Mobile USA. IP databases use it to label an address as mobile, residential or hosting. **CGNAT (carrier-grade NAT)** — A carrier system that puts many subscribers behind one public IPv4 address. It is why mobile IPs are shared and hard to block. See the [CGNAT guide](https://cellmast.com/guides/cgnat-mobile-ips/). **100.64.0.0/10** — The shared address block reserved by RFC 6598 for carrier-grade NAT. Devices inside a carrier network often get addresses from it. **APN (access point name)** — The setting a phone or modem uses to connect to a carrier's data network. Searches such as "Vodafone proxy" often mean APN settings, not a proxy service. **4G LTE** — The fourth generation of mobile networks, built on the LTE standard. "4G proxy" and "LTE proxy" mean the same product. **5G NSA (non-standalone)** — 5G radio that relies on a 4G core network. It was the first form of 5G most carriers launched. **5G SA (standalone)** — 5G radio with a 5G core network, which allows lower latency and newer features. Rolled out later and unevenly by country. See [4G vs 5G proxies](https://cellmast.com/guides/4g-vs-5g-proxies/). **Cell mast** — The tower that carries a mobile network's antennas, called a cell tower in the US. It gave CellMast its name. **IPv6 and 464XLAT** — Many carriers give phones IPv6 addresses; 464XLAT (RFC 6877) lets IPv6-only devices still reach IPv4 websites through a translator. ## Product terms **Dedicated port** — One modem and SIM reserved for one customer, rented by the day, week or month with unlimited data. See [dedicated mobile proxies](https://cellmast.com/mobile-proxies/dedicated/). **Rotating mobile pool** — A shared set of carrier IPs, billed per GB, where each request can get a new IP. See [rotating mobile proxies](https://cellmast.com/mobile-proxies/rotating/). **Shared mobile proxy** — A modem used by several customers at once. CellMast does not sell shared ports; its pool is billed per GB instead. **IP rotation** — Asking the modem to reconnect so the carrier assigns a new IP. **Rotation link** — A URL that rotates a port when opened, for example `https://cellmast.com/api/v1/mobile/{port}/rotate?key=API_KEY`. See the [rotation API](https://cellmast.com/ip-rotation-api/). **Rotation timer** — Automatic rotation every N minutes. On CellMast, from every 2 minutes to every 24 hours; manual rotations are accepted at most once every 30 seconds. **Sticky session** — Keeping the same exit IP on a rotating pool for a set time. On CellMast, a sticky session lasts the time you set (ttl, in minutes), up to 30 minutes; the IP can change earlier. **Relocation** — Moving a rented port to another modem, carrier or country on request to support. Need another country? Ask support: if a port is in stock there, we move your remaining days to it and settle the price difference through your balance (one move per billing period). **Price zone** — A group of countries with the same port price, because modems and SIMs there cost about the same. CellMast has eight. **Unlimited data** — No per-GB bill on a dedicated port, under fair use. On CellMast: Unlimited data on your dedicated port, under fair use: the carrier may slow or pause very heavy use. One customer per modem, no resale. **Fair use** — The rule that comes with per-day billing: one customer per modem, no resale, traffic within the [Acceptable Use Policy](https://cellmast.com/acceptable-use/), and the carrier may slow or pause very heavy use. ## Connection terms **HTTP proxy** — A proxy that speaks HTTP; it tunnels HTTPS with the CONNECT method. On CellMast: port 7777. **SOCKS5** — A general-purpose proxy protocol that carries any TCP traffic. On CellMast: port 7778. **Connection string** — The four values of a proxy in one line: `host:port:username:password`. **Gateway** — The server you connect to, `gw.cellmast.com`, which forwards your traffic to your modem or to the pool. **HTTP 429** — "Too many requests". The CellMast API returns it when you rotate a port less than 30 seconds after the last rotation. **KYC (know your customer)** — Identity checks some providers require, such as ID upload or a selfie. CellMast has none: no ID, no selfie, no documents. See [no KYC](https://cellmast.com/no-kyc/). **Top-up** — A crypto payment that adds US dollars to your CellMast balance, from $25. Plans are then paid from the balance. **Put the terms to work** Dedicated 4G/5G ports from $2.63/day, rotating data from $1.50/GB. Pay in crypto. [See pricing](https://cellmast.com/pricing/) · [Read the FAQ](https://cellmast.com/faq/) --- CellMast: CellMast is a 4G/5G mobile proxy provider: dedicated carrier modems with unlimited traffic, plus a rotating per-GB mobile pool, paid in crypto with no ID upload.