IPv4 Transfers March 2021
In March 2021, the five Regional Internet Registries recorded 1,430 transfers: 9,638,656 IPv4 addresses in 1,098 blocks, plus 134 IPv6 blocks and 198 AS numbers. 58 transfers moved resources between two registries. Dates are the dates the registry processed the transfer.
IPv4 addresses transferred
9.6M
1,098 IPv4 blocks
Registry transfers
1,430
134 IPv6 / 198 ASN
Inter-RIR transfers
58
279K IPv4 addresses (3%)
Mergers and acquisitions
459
971 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 March 2021
IPv4 addresses moved from one registry to another. All inter-RIR transfers
| From ↓ / To → | RIPE NCC | ARIN | APNIC | LACNIC | AFRINIC |
|---|---|---|---|---|---|
| RIPE NCC | - | 2,048 3 transfers | 20K 5 transfers | 0 | 0 |
| ARIN | 156K 14 transfers | - | 21K 11 transfers | 0 | 0 |
| APNIC | 65K 21 transfers | 2,048 2 transfers | - | 0 | 0 |
| LACNIC | 0 | 12K 2 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 |
|---|---|---|---|---|
| /13 | 524,288 | 3 | 0.3% | 1,572,864 |
| /14 | 262,144 | 7 | 0.6% | 1,835,008 |
| /15 | 131,072 | 3 | 0.3% | 393,216 |
| /16 | 65,536 | 35 | 3.2% | 2,293,760 |
| /17 | 32,768 | 21 | 1.9% | 688,128 |
| /18 | 16,384 | 46 | 4.2% | 753,664 |
| /19 | 8,192 | 109 | 9.9% | 892,928 |
| /20 | 4,096 | 141 | 12.8% | 577,536 |
| /21 | 2,048 | 101 | 9.2% | 206,848 |
| /22 | 1,024 | 299 | 27.2% | 306,176 |
| /23 | 512 | 130 | 11.8% | 66,560 |
| /24 | 256 | 203 | 18.5% | 51,968 |
Top Receiving Countries
- 1🇯🇵 Japan147K
- 2🇨🇳 China131K
- 3🇮🇱 Israel82K
- 4🇨🇦 Canada30K
- 5🇺🇸 United States28K
- 6🇸🇬 Singapore18K
- 7🇮🇳 India14K
- 8🇦🇫 Afghanistan8,192
- 9🇵🇰 Pakistan8,192
Top Source Countries
- 1🇦🇺 Australia199K
- 2🇺🇸 United States134K
- 3🇧🇩 Bangladesh15K
- 4🇨🇦 Canada14K
- 5🇮🇳 India8,704
- 6🇦🇷 Argentina8,192
- 7🇨🇳 China5,120
- 8🇸🇬 Singapore4,608
- 9🇧🇷 Brazil4,096
IPv4 transferred across country borders in March 2021. Registry logs before mid-2025 do not carry a country for every transfer, so this ranking undercounts some regions.
Largest IPv4 Transfers March 2021
- 197.88.0.0/13M&A ·
- 197.80.0.0/13M&A ·
- 197.96.0.0/13M&A ·
- 41.132.0.0/14M&A ·
- 196.212.0.0/14M&A ·
- 196.208.0.0/14M&A ·
- 196.36.0.0/14M&A ·
- 87.84.0.0/14M&A ·
- 82.108.0.0/14M&A ·
- 217.204.0.0/14M&A ·
- 196.34.0.0/15M&A ·
- 135.134.0.0/15Transfer ·
- 87.82.0.0/15M&A ·
- 172.240.0.0/16M&A ·
- 212.168.0.0/16Transfer ·
- 194.231.0.0/16Transfer ·
- 155.177.0.0/16M&A ·
- 196.33.0.0/16M&A ·
- 196.26.0.0/16M&A ·
- 196.23.0.0/16M&A ·
- 196.14.0.0/16M&A ·
- 43.222.0.0/16Transfer ·
- 163.228.0.0/16Transfer ·
- 159.27.0.0/16Transfer ·
- 168.208.0.0/16M&A ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 197.88.0.0/13 | M&A | |||
| 197.80.0.0/13 | M&A | |||
| 197.96.0.0/13 | M&A | |||
| 41.132.0.0/14 | M&A | |||
| 196.212.0.0/14 | M&A | |||
| 196.208.0.0/14 | M&A | |||
| 196.36.0.0/14 | M&A | |||
| 87.84.0.0/14 | Interoute Managed Services UK Limited | INTEROUTE NETWORKS LIMITED | M&A | |
| 82.108.0.0/14 | Interoute Managed Services UK Limited | INTEROUTE NETWORKS LIMITED | M&A | |
| 217.204.0.0/14 | Interoute Managed Services UK Limited | INTEROUTE NETWORKS LIMITED | M&A | |
| 196.34.0.0/15 | M&A | |||
| 135.134.0.0/15 | Transfer | |||
| 87.82.0.0/15 | Interoute Managed Services UK Limited | INTEROUTE NETWORKS LIMITED | M&A | |
| 172.240.0.0/16 | M&A | |||
| 212.168.0.0/16 | GTT GmbH | GTT Communications Inc. | Transfer | |
| 194.231.0.0/16 | GTT GmbH | GTT Communications Inc. | Transfer | |
| 155.177.0.0/16 | M&A | |||
| 196.33.0.0/16 | M&A | |||
| 196.26.0.0/16 | M&A | |||
| 196.23.0.0/16 | M&A | |||
| 196.14.0.0/16 | M&A | |||
| 43.222.0.0/16 | Transfer | |||
| 163.228.0.0/16 | Microsoft Singapore Pte. Ltd. | Transfer | ||
| 159.27.0.0/16 | Microsoft Singapore Pte. Ltd. | Transfer | ||
| 168.208.0.0/16 | M&A |