IPv4 Transfers October 2021
In October 2021, the five Regional Internet Registries recorded 1,097 transfers: 3,137,600 IPv4 addresses in 829 blocks, plus 140 IPv6 blocks and 128 AS numbers. 51 transfers moved resources between two registries. Dates are the dates the registry processed the transfer.
IPv4 addresses transferred
3.1M
829 IPv4 blocks
Registry transfers
1,097
140 IPv6 / 128 ASN
Inter-RIR transfers
51
171K IPv4 addresses (5%)
Mergers and acquisitions
223
874 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 October 2021
IPv4 addresses moved from one registry to another. All inter-RIR transfers
| From ↓ / To → | RIPE NCC | ARIN | APNIC | LACNIC | AFRINIC |
|---|---|---|---|---|---|
| RIPE NCC | - | 9,728 3 transfers | 1,024 1 transfers | 0 | 0 |
| ARIN | 100K 13 transfers | - | 30K 6 transfers | 8,192 1 transfers | 0 |
| APNIC | 13K 16 transfers | 9,216 11 transfers | - | 0 | 0 |
| LACNIC | 0 | 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 |
|---|---|---|---|---|
| /15 | 131,072 | 2 | 0.2% | 262,144 |
| /16 | 65,536 | 22 | 2.7% | 1,441,792 |
| /17 | 32,768 | 11 | 1.3% | 360,448 |
| /18 | 16,384 | 9 | 1.1% | 147,456 |
| /19 | 8,192 | 22 | 2.7% | 180,224 |
| /20 | 4,096 | 44 | 5.3% | 180,224 |
| /21 | 2,048 | 37 | 4.5% | 75,776 |
| /22 | 1,024 | 372 | 44.9% | 380,928 |
| /23 | 512 | 116 | 14.0% | 59,392 |
| /24 | 256 | 192 | 23.2% | 49,152 |
| /27 | 32 | 2 | 0.2% | 64 |
Top Receiving Countries
- 1🇺🇸 United States55K
- 2🇸🇬 Singapore20K
- 3🇵🇭 Philippines17K
- 4🇧🇷 Brazil8,192
- 5🇹🇭 Thailand8,192
- 6🇳🇿 New Zealand4,096
- 7🇦🇺 Australia3,072
- 8🇨🇦 Canada2,304
- 9🇮🇳 India2,048
Top Source Countries
- 1🇨🇦 Canada71K
- 2🇸🇬 Singapore16K
- 3🇺🇸 United States16K
- 4🇮🇳 India9,472
- 5🇨🇳 China6,144
- 6🇭🇰 Hong Kong SAR China5,120
- 7🇧🇩 Bangladesh3,584
- 8🇳🇿 New Zealand2,048
- 9🇮🇩 Indonesia2,048
- 10🇹🇴 Tonga1,024
IPv4 transferred across country borders in October 2021. Registry logs before mid-2025 do not carry a country for every transfer, so this ranking undercounts some regions.
Largest IPv4 Transfers October 2021
- 193.20.0.0/15Transfer ·
- 78.32.0.0/15Transfer ·
- 162.3.0.0/16M&A ·
- 144.196.0.0/16Transfer ·
- 143.168.0.0/16Transfer ·
- 159.11.0.0/16Transfer ·
- 152.227.0.0/16Transfer ·
- 170.14.0.0/16M&A ·
- 167.1.0.0/16M&A ·
- 155.90.0.0/16M&A ·
- 135.108.0.0/16M&A ·
- 146.190.0.0/16Transfer ·
- 167.241.0.0/16M&A ·
- 158.95.0.0/16M&A ·
- 151.138.0.0/16M&A ·
- 150.169.0.0/16M&A ·
- 158.147.0.0/16M&A ·
- 137.237.0.0/16M&A ·
- 130.41.0.0/16M&A ·
- 87.127.0.0/16Transfer ·
- 188.39.0.0/16Transfer ·
- 142.153.0.0/16M&A ·
- 153.12.0.0/16Transfer ·
- 209.38.0.0/16Transfer ·
- 208.52.0.0/17M&A ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 193.20.0.0/15 | EDEKA ZENTRALE Handels Stiftung | EDEKA DIGITAL GmbH | Transfer | |
| 78.32.0.0/15 | ENTANET International Limited | Cityfibre Limited | Transfer | |
| 162.3.0.0/16 | M&A | |||
| 144.196.0.0/16 | Transfer | |||
| 143.168.0.0/16 | Transfer | |||
| 159.11.0.0/16 | Transfer | |||
| 152.227.0.0/16 | Transfer | |||
| 170.14.0.0/16 | M&A | |||
| 167.1.0.0/16 | M&A | |||
| 155.90.0.0/16 | M&A | |||
| 135.108.0.0/16 | M&A | |||
| 146.190.0.0/16 | Transfer | |||
| 167.241.0.0/16 | M&A | |||
| 158.95.0.0/16 | M&A | |||
| 151.138.0.0/16 | M&A | |||
| 150.169.0.0/16 | M&A | |||
| 158.147.0.0/16 | M&A | |||
| 137.237.0.0/16 | M&A | |||
| 130.41.0.0/16 | M&A | |||
| 87.127.0.0/16 | ENTANET International Limited | Cityfibre Limited | Transfer | |
| 188.39.0.0/16 | ENTANET International Limited | Cityfibre Limited | Transfer | |
| 142.153.0.0/16 | M&A | |||
| 153.12.0.0/16 | Transfer | |||
| 209.38.0.0/16 | Transfer | |||
| 208.52.0.0/17 | M&A |