Allocation AtlasFIVE REGISTRIES · ONE EXPLORER
INTERNET RESOURCES / ARIN

ARIN

United States, Canada & parts of the Caribbean. Explore address space by country and holder.

Source date 2026-11-07
IPv4 addresses1,644,513,024Registered address space
Resource records77,349IPv4 prefixes and ranges
Holders with IPv430,763Distinct holder IDs
Countries & areas61Registry country association
THE ALLOCATION INDEX

Country rankings

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61 countries & areasIPv4 · ARIN
#Country / area ↕IPv4 addresses ↑Records ↕Holders ↕
1CNChina↗ 25611
2IDIndonesia↗ 25611
3LULuxembourg↗ 25611
4MHMarshall Islands↗ 25611
5MOMacau↗ 25611
6ESSpain↗ 51221
7IEIreland↗ 51221
8PAPanama↗ 51211
9BLSt Barthelemy↗ 76832
10AQAntarctica↗ 1,02431
11DODominican Republic↗ 1,02411
12MSMontserrat↗ 1,28022
13VNVietnam↗ 1,53666
14ILIsrael↗ 2,04842
15TWTaiwan↗ 2,04855
16MXMexico↗ 3,07288
17MQMartinique↗ 3,32832
18HKHong Kong↗ 3,58455
19MFSt Martin (French)↗ 3,58476
20PHPhilippines↗ 3,5841110
21UGUganda↗ 4,09611
22PMSt Pierre & Miquelon↗ 4,60821
23SESweden↗ 4,60833
24MYMalaysia↗ 4,864108
25RORomania↗ 6,14421
26CHSwitzerland↗ 7,16853
27DMDominica↗ 8,960115
28AUAustralia↗ 9,21655
29AIAnguilla↗ 9,47284
30VCSt Vincent↗ 10,240113
31TCTurks & Caicos Is↗ 10,49673
32GDGrenada↗ 11,264159
33THThailand↗ 12,2883328
34GPGuadeloupe↗ 17,15284
35KRKorea (South)↗ 17,92044
36FRFrance↗ 18,9443211
37LCSt Lucia↗ 22,016214
38KNSt Kitts & Nevis↗ 23,040197
39NLNetherlands↗ 24,5762111
40VGVirgin Islands (UK)↗ 36,6084117
41KYCayman Islands↗ 49,408278
42JEJersey↗ 65,53611
43FIFinland↗ 65,79222
44GUGuam↗ 65,79221
45AGAntigua & Barbuda↗ 66,816229
46NONorway↗ 66,81653
47BEBelgium↗ 67,84076
48ITItaly↗ 68,35297
49DEGermany↗ 80,6405617
50SGSingapore↗ 81,6643419
51JPJapan↗ 88,5763119
52GBUnited Kingdom↗ 89,0883719
53BMBermuda↗ 105,7284524
54VIVirgin Islands (US)↗ 130,3042410
55BSBahamas↗ 138,2402612
56BBBarbados↗ 168,7043010
57JMJamaica↗ 225,2805419
58CZCzech Republic↗ 395,26462
59PRPuerto Rico↗ 773,376227101
60CACanada↗ 67,108,8649,1633,954
61USUnited States↗ 1,574,317,56867,21426,330
Sources, freshness & name coverage

32,203 holders have registry organisation or membership names; 0 have descriptive labels; 0 remain identified by ID. Counts cover both address families across this registry.

Built 2026-11-08T06:13:08+00:00 · Delegated source date 2026-11-07. Name sources may have different publication times.

READING THE DATA

Holdings, with context.

Countries follow the registry’s delegated country code. This is a registration association, not IP geolocation. The original RIPE LIR view instead uses the country prefix in each LIR identifier.

What is counted?

Allocated and assigned records from each RIR’s extended statistics. Public bulk files add names, registration status, network labels and related ASNs. Parent allocations and customer assignments are not added together. These are registered resources, not a measurement of routed or active addresses.

What is a holder?

A registry holder ID, kept distinct even when names match. IDs may change between snapshots; company ownership across IDs or RIRs is not inferred. Organisation names, ASN labels and network descriptions are distinguished. Unnamed holders remain visible. APNIC NIR coverage and LACNIC name coverage are incomplete.