# IANA range: 0.0.0.0/8

## Who is this IP range?

**Short answer:** IANA reserves this range for protocol-defined “this network” use. It is not assigned to a company, ISP, cloud provider, or ordinary network operator.

- **Registry:** IANA
- **Range:** `0.0.0.0/8`
- **IANA name:** This network
- **Classification:** Special-purpose IPv4 space
- **Organizational holder:** None; reserved by the IP protocol
- **Globally reachable:** No
- **Verified:** 2026-07-20

## Range knowledge

IANA reserves `0.0.0.0/8` as “This network.” It is not an ordinary public allocation to an ISP, cloud provider, company, or person. IANA marks the block as not usable as a destination, not forwardable, and not globally reachable.

No normal BGP origin or global network operator should be inferred for this block.

## Investigated addresses

### 0.0.0.0

The exact `0.0.0.0/32` entry means “This host on this network.” It is used as an unspecified source address in limited host-initialization contexts and must not be treated as a normal destination.

Detailed address page: [`address-book/ip/0.0.0.0.md`](../address-book/ip/0.0.0.0.md)

## Relationship summary

| Axis | Finding |
|---|---|
| Registration | IANA special-purpose reservation |
| Registered holder | Not organizationally assigned |
| Route origin | None expected |
| Operator | None |
| Service | Protocol-defined unspecified/this-network semantics |

## Sources

- [IANA IPv4 Special-Purpose Address Space](https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml), checked 2026-07-20
- [RFC 1122, section 3.2.1.3](https://www.rfc-editor.org/rfc/rfc1122.html#section-3.2.1.3)
- [RFC 791](https://www.rfc-editor.org/rfc/rfc791.html)