Technical · Lexicon
IPv4, explained
IPv4 is an internet protocol using 32-bit addresses, commonly represented in dotted decimal notation.
At a glance
- The field
- Technical
- Reading time
- 1 minute
- In this entry
- Meaning · relevance · limits
01
The meaning
IPv4 is an internet protocol using 32-bit addresses, commonly represented in dotted decimal notation.
02
Why it matters
A public server may use an IPv4 address for incoming connections and an A DNS record for a hostname.
03
The boundary
Address allocation, NAT and additional address charges are separate plan details to verify.
04
An additional address has a defined scope
A project requests another IPv4 address to separate two services or use a distinct mail identity. That address does not add CPU, bandwidth or another server. The prepared Route Extension option is available only for listed categories; reverse DNS, reputation and any mail approval should be checked separately.
- Compare the base plan’s included IPv4 allocation with the optional additional-address offer.
- Request PTR changes only where the address and service permit them; an address alone cannot guarantee email delivery.