IPv4 Transfers May 2023
In May 2023, the five Regional Internet Registries recorded 938 transfers: 3,875,072 IPv4 addresses in 707 blocks, plus 118 IPv6 blocks and 113 AS numbers. 53 transfers moved resources between two registries. Dates are the dates the registry processed the transfer.
IPv4 addresses transferred
3.9M
707 IPv4 blocks
Registry transfers
938
118 IPv6 / 113 ASN
Inter-RIR transfers
53
494K IPv4 addresses (13%)
Mergers and acquisitions
265
673 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 May 2023
IPv4 addresses moved from one registry to another. All inter-RIR transfers
| From ↓ / To → | RIPE NCC | ARIN | APNIC | LACNIC | AFRINIC |
|---|---|---|---|---|---|
| RIPE NCC | - | 393K 9 transfers | 52K 8 transfers | 0 | 0 |
| ARIN | 28K 8 transfers | - | 0 | 256 1 transfers | 0 |
| APNIC | 12K 10 transfers | 6,912 15 transfers | - | 0 | 0 |
| LACNIC | 256 1 transfers | 2,048 1 transfers | 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 |
|---|---|---|---|---|
| /15 | 131,072 | 1 | 0.1% | 131,072 |
| /16 | 65,536 | 33 | 4.7% | 2,162,688 |
| /17 | 32,768 | 12 | 1.7% | 393,216 |
| /18 | 16,384 | 22 | 3.1% | 360,448 |
| /19 | 8,192 | 31 | 4.4% | 253,952 |
| /20 | 4,096 | 41 | 5.8% | 167,936 |
| /21 | 2,048 | 44 | 6.2% | 90,112 |
| /22 | 1,024 | 209 | 29.6% | 214,016 |
| /23 | 512 | 83 | 11.7% | 42,496 |
| /24 | 256 | 231 | 32.7% | 59,136 |
Top Receiving Countries
- 1🇸🇬 Singapore280K
- 2🇺🇸 United States224K
- 3🇭🇰 Hong Kong SAR China8,192
- 4🇨🇦 Canada5,120
- 5🇦🇫 Afghanistan2,048
- 6🇯🇵 Japan1,280
- 7🇪🇨 Ecuador1,024
- 8🇨🇳 China1,024
- 9🇧🇷 Brazil768
Top Source Countries
- 1🇵🇷 Puerto Rico203K
- 2🇯🇵 Japan67K
- 3🇳🇿 New Zealand66K
- 4🇮🇩 Indonesia66K
- 5🇮🇳 India40K
- 6🇨🇦 Canada14K
- 7🇭🇰 Hong Kong SAR China8,448
- 8🇦🇺 Australia7,168
- 9🇧🇩 Bangladesh5,632
IPv4 transferred across country borders in May 2023. Registry logs before mid-2025 do not carry a country for every transfer, so this ranking undercounts some regions.
Largest IPv4 Transfers May 2023
- 94.38.0.0/15inter-RIRTransfer ·
- 158.87.0.0/16M&A ·
- 146.89.0.0/16M&A ·
- 129.35.0.0/16M&A ·
- 129.42.0.0/16M&A ·
- 130.103.0.0/16M&A ·
- 161.55.0.0/16M&A ·
- 124.81.0.0/16Transfer ·
- 160.4.0.0/16Transfer ·
- 163.3.0.0/16inter-RIRTransfer ·
- 139.96.0.0/16inter-RIRTransfer ·
- 109.246.0.0/16Transfer ·
- 158.88.0.0/16M&A ·
- 158.86.0.0/16M&A ·
- 142.88.0.0/16M&A ·
- 138.95.0.0/16M&A ·
- 129.39.0.0/16M&A ·
- 170.227.0.0/16M&A ·
- 167.210.0.0/16M&A ·
- 158.98.0.0/16M&A ·
- 163.57.0.0/16Transfer ·
- 136.236.0.0/16Transfer ·
- 157.135.0.0/16M&A ·
- 130.31.0.0/16Transfer ·
- 147.81.0.0/16Transfer ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 94.38.0.0/15inter-RIR | Tiscali Italia S.P.A. | Transfer | ||
| 158.87.0.0/16 | M&A | |||
| 146.89.0.0/16 | M&A | |||
| 129.35.0.0/16 | M&A | |||
| 129.42.0.0/16 | M&A | |||
| 130.103.0.0/16 | M&A | |||
| 161.55.0.0/16 | M&A | |||
| 124.81.0.0/16 | Transfer | |||
| 160.4.0.0/16 | Transfer | |||
| 163.3.0.0/16inter-RIR | Samsaj Group AB | Transfer | ||
| 139.96.0.0/16inter-RIR | Aktiebolaget Sappa | Transfer | ||
| 109.246.0.0/16 | WIFINITY LIMITED | Microsoft Limited | Transfer | |
| 158.88.0.0/16 | M&A | |||
| 158.86.0.0/16 | M&A | |||
| 142.88.0.0/16 | M&A | |||
| 138.95.0.0/16 | M&A | |||
| 129.39.0.0/16 | M&A | |||
| 170.227.0.0/16 | M&A | |||
| 167.210.0.0/16 | M&A | |||
| 158.98.0.0/16 | M&A | |||
| 163.57.0.0/16 | Transfer | |||
| 136.236.0.0/16 | Transfer | |||
| 157.135.0.0/16 | M&A | |||
| 130.31.0.0/16 | Transfer | |||
| 147.81.0.0/16 | Transfer |