research: add range-based global IP registry

2026-07-22 10:42:37 +00:00
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+# Global IP range registry
+
+This folder is the human-readable registry of IP knowledge collected by this repository. It is organized by **network range**, not by one file for every individual address: IPv4 alone contains 4,294,967,296 addresses, and registration and routing facts normally apply to prefixes.
+
+## Filename convention
+
+```text
+<registry>--<network-address-with-hyphens>--<prefix-length>.md
+```
+
+Examples:
+
+```text
+iana--0-0-0-0--8.md
+apnic--1-1-1-0--24.md
+```
+
+The parts mean:
+
+- `registry`: authoritative number registry currently responsible for the record (`iana`, `afrinic`, `apnic`, `arin`, `lacnic`, or `ripe-ncc`);
+- `network-address-with-hyphens`: canonical network address with dots replaced by hyphens;
+- `prefix-length`: CIDR range number without `/`.
+
+IPv6 filenames use the same rule, with colons replaced by hyphens and compressed notation expanded to avoid ambiguous names.
+
+## Current coverage
+
+| Range | Registry | Classification | Known exact addresses | Record |
+|---|---|---|---|---|
+| `0.0.0.0/8` | IANA | Special-purpose | `0.0.0.0` | [record](iana--0-0-0-0--8.md) |
+| `1.1.1.0/24` | APNIC | Public unicast | `1.1.1.1` | [record](apnic--1-1-1-0--24.md) |
+
+This is **not yet a list of all global ranges**. It contains the two ranges investigated so far. The expansion plan is in [`research/ip-network-roadmap.md`](../research/ip-network-roadmap.md).
+
+## Required contents
+
+Every range file must distinguish:
+
+1. registry and registered resource holder;
+2. special-purpose classification, where applicable;
+3. observed BGP announcement and origin ASN;
+4. operator and service relationships;
+5. exact addresses already investigated inside the range;
+6. sources and verification dates.
+
+Do not compress these into a single misleading “owner” field. Registration, routing, operation, and service responsibility can belong to different organizations.
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+# APNIC range: 1.1.1.0/24
+
+- **Registry:** APNIC
+- **Range:** `1.1.1.0/24`
+- **RDAP name/type:** `APNIC-LABS` / `ASSIGNED PORTABLE`
+- **Registered resource holder:** APNIC Research and Development
+- **Observed route origin:** `AS13335` — Cloudflare, Inc.
+- **Classification:** Public unicast
+- **Globally routed:** Yes
+- **Verified:** 2026-07-20
+
+## Range knowledge
+
+APNIC RDAP describes `1.1.1.0/24` as APNIC research space and documents the APNIC–Cloudflare DNS Resolver project. Current routing evidence observed during the investigation showed Cloudflare's `AS13335` originating the prefix.
+
+This means “ownership” must be separated into relationships:
+
+- **Registration:** APNIC Research and Development is the published registrant.
+- **Routing:** Cloudflare `AS13335` originates the covering prefix.
+- **Operation:** Cloudflare operates the public resolver service.
+- **Project relationship:** APNIC and Cloudflare publicly document their collaboration.
+
+## Investigated addresses
+
+### 1.1.1.1
+
+`1.1.1.1` is Cloudflare's public recursive DNS resolver address within the registered range.
+
+Detailed address page: [`address-book/ip/1.1.1.1.md`](../address-book/ip/1.1.1.1.md)
+
+## Relationship summary
+
+| Axis | Finding |
+|---|---|
+| Registration | APNIC `APNIC-LABS` resource |
+| Registered holder | APNIC Research and Development |
+| Announced prefix | `1.1.1.0/24` |
+| Route origin | `AS13335`, Cloudflare, Inc. |
+| Operator | Cloudflare |
+| Known service | 1.1.1.1 public recursive DNS resolver |
+
+## Sources
+
+- [APNIC RDAP record](https://rdap.apnic.net/ip/1.1.1.1), checked 2026-07-20
+- [RIPEstat prefix overview](https://stat.ripe.net/data/prefix-overview/data.json?resource=1.1.1.1), checked 2026-07-20
+- [Cloudflare launch announcement](https://blog.cloudflare.com/announcing-1111/)
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+# IANA range: 0.0.0.0/8
+
+- **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)