CIDR Range

219.0.0.0/13

524.3K IPs /13 Japan APNIC

Addresses

524,288

524.3K

IP Range

219.0.0.0

→ 219.7.255.255

Sub-ranges

within this block

PTR Density

100.0%

524.3K of 524.3K IPs have PTR

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

76/100

Moderate

How this score is built

Baseline (neutral) 65
Long-established allocation (25y) +6
Has a reverse-DNS (PTR) record +5
Trust score 76 / 100

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Geolocation

First and last addresses in 219.0.0.0/13

219.0.0.0/13 runs from 219.0.0.0 to 219.7.255.255.

First 16

219.0.0.0 219.0.0.1 219.0.0.2 219.0.0.3 219.0.0.4 219.0.0.5 219.0.0.6 219.0.0.7 219.0.0.8 219.0.0.9 219.0.0.10 219.0.0.11 219.0.0.12 219.0.0.13 219.0.0.14 219.0.0.15

Last 16

219.7.255.240 219.7.255.241 219.7.255.242 219.7.255.243 219.7.255.244 219.7.255.245 219.7.255.246 219.7.255.247 219.7.255.248 219.7.255.249 219.7.255.250 219.7.255.251 219.7.255.252 219.7.255.253 219.7.255.254 219.7.255.255

RIR Ownership History

Atom feed ⇲

Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours.

Date	Event	From	To	RIR
2026-05-10	New Allocation	—	JP	apnic

Frequently Asked Questions

What is 219.0.0.0/13?

219.0.0.0/13 is a CIDR network block containing 524,288 IPv4 addresses (from 219.0.0.0 to 219.7.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 219.0.0.0/13 network?

The 219.0.0.0/13 range is allocated to an unknown organization from Japan.

Last updated: 2026-11-10 17:54:05 UTC