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