IPv4 Transfers September 2023
In September 2023, the five Regional Internet Registries recorded 942 transfers: 7,412,640 IPv4 addresses in 728 blocks, plus 65 IPv6 blocks and 149 AS numbers. 59 transfers moved resources between two registries. Dates are the dates the registry processed the transfer.
IPv4 addresses transferred
7.4M
728 IPv4 blocks
Registry transfers
942
65 IPv6 / 149 ASN
Inter-RIR transfers
59
1.3M IPv4 addresses (18%)
Mergers and acquisitions
390
552 market transfers
Transfer Volume by RIR
Transfers counted at the receiving registry. Inter-RIR columns show IPv4 that entered or left the region.
Inter-RIR Transfers September 2023
IPv4 addresses moved from one registry to another. All inter-RIR transfers
| From ↓ / To → | RIPE NCC | ARIN | APNIC | LACNIC | AFRINIC |
|---|---|---|---|---|---|
| RIPE NCC | - | 147K 4 transfers | 33K 1 transfers | 0 | 0 |
| ARIN | 866K 25 transfers | - | 0 | 0 | 0 |
| APNIC | 216K 25 transfers | 67K 3 transfers | - | 0 | 0 |
| LACNIC | 512 1 transfers | 0 | 0 | - | 0 |
| AFRINIC | 0 | 0 | 0 | 0 | - |
IPv4 Transfers by Block Size
Number of transferred IPv4 blocks per prefix length.
| Prefix length | Addresses per block | Blocks | Share of blocks | IPv4 addresses |
|---|---|---|---|---|
| /12 | 1,048,576 | 1 | 0.1% | 1,048,576 |
| /14 | 262,144 | 4 | 0.5% | 1,048,576 |
| /16 | 65,536 | 63 | 8.7% | 4,128,768 |
| /17 | 32,768 | 5 | 0.7% | 163,840 |
| /18 | 16,384 | 8 | 1.1% | 131,072 |
| /19 | 8,192 | 38 | 5.2% | 311,296 |
| /20 | 4,096 | 45 | 6.2% | 184,320 |
| /21 | 2,048 | 45 | 6.2% | 92,160 |
| /22 | 1,024 | 194 | 26.6% | 198,656 |
| /23 | 512 | 88 | 12.1% | 45,056 |
| /24 | 256 | 235 | 32.3% | 60,160 |
| /25 | 128 | 1 | 0.1% | 128 |
| /27 | 32 | 1 | 0.1% | 32 |
Top Receiving Countries
- 1🇺🇸 United States132K
- 2🇹🇭 Thailand33K
- 3🇵🇭 Philippines5,120
- 4🇨🇦 Canada3,584
- 5🇮🇳 India512
- 6🇪🇸 Spain512
- 7🇨🇴 Colombia256
Top Source Countries
- 1🇯🇵 Japan132K
- 2🇦🇺 Australia66K
- 3🇨🇦 Canada66K
- 4🇳🇿 New Zealand66K
- 5🇭🇰 Hong Kong SAR China6,144
- 6🇮🇳 India4,608
- 7🇺🇸 United States3,584
- 8🇧🇩 Bangladesh3,072
- 9🇲🇳 Mongolia2,048
IPv4 transferred across country borders in September 2023. Registry logs before mid-2025 do not carry a country for every transfer, so this ranking undercounts some regions.
Largest IPv4 Transfers September 2023
- 32.144.0.0/12Transfer ·
- 32.160.0.0/14Transfer ·
- 173.36.0.0/14M&A ·
- 64.100.0.0/14M&A ·
- 171.68.0.0/14M&A ·
- 151.208.0.0/16M&A ·
- 199.61.0.0/16Transfer ·
- 199.63.0.0/16Transfer ·
- 165.195.0.0/16Transfer ·
- 129.17.0.0/16Transfer ·
- 16.147.0.0/16Transfer ·
- 16.186.0.0/16Transfer ·
- 16.184.0.0/16Transfer ·
- 16.141.0.0/16Transfer ·
- 16.149.0.0/16Transfer ·
- 16.174.0.0/16Transfer ·
- 16.192.0.0/16Transfer ·
- 16.213.0.0/16Transfer ·
- 40.155.0.0/16Transfer ·
- 40.159.0.0/16Transfer ·
- 40.212.0.0/16Transfer ·
- 40.253.0.0/16Transfer ·
- 40.148.0.0/16Transfer ·
- 40.146.0.0/16Transfer ·
- 40.47.0.0/16Transfer ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 32.144.0.0/12 | Transfer | |||
| 32.160.0.0/14 | Transfer | |||
| 173.36.0.0/14 | M&A | |||
| 64.100.0.0/14 | M&A | |||
| 171.68.0.0/14 | M&A | |||
| 151.208.0.0/16 | M&A | |||
| 199.61.0.0/16 | Transfer | |||
| 199.63.0.0/16 | Transfer | |||
| 165.195.0.0/16 | Transfer | |||
| 129.17.0.0/16 | Transfer | |||
| 16.147.0.0/16 | Transfer | |||
| 16.186.0.0/16 | Transfer | |||
| 16.184.0.0/16 | Transfer | |||
| 16.141.0.0/16 | Transfer | |||
| 16.149.0.0/16 | Transfer | |||
| 16.174.0.0/16 | Transfer | |||
| 16.192.0.0/16 | Transfer | |||
| 16.213.0.0/16 | Transfer | |||
| 40.155.0.0/16 | Transfer | |||
| 40.159.0.0/16 | Transfer | |||
| 40.212.0.0/16 | Transfer | |||
| 40.253.0.0/16 | Transfer | |||
| 40.148.0.0/16 | Transfer | |||
| 40.146.0.0/16 | Transfer | |||
| 40.47.0.0/16 | Transfer |