IPv4 Transfers December 2015
In December 2015, the five Regional Internet Registries recorded 428 transfers: 5,439,488 IPv4 addresses in 356 blocks, plus 17 IPv6 blocks and 55 AS numbers. 19 transfers moved resources between two registries. Dates are the dates the registry processed the transfer.
IPv4 addresses transferred
5.4M
356 IPv4 blocks
Registry transfers
428
17 IPv6 / 55 ASN
Inter-RIR transfers
19
3.5M IPv4 addresses (65%)
Mergers and acquisitions
100
328 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 December 2015
IPv4 addresses moved from one registry to another. All inter-RIR transfers
| From ↓ / To → | RIPE NCC | ARIN | APNIC | LACNIC | AFRINIC |
|---|---|---|---|---|---|
| RIPE NCC | - | 0 | 0 | 0 | 0 |
| ARIN | 3.2M 12 transfers | - | 296K 7 transfers | 0 | 0 |
| APNIC | 0 | 0 | - | 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 |
|---|---|---|---|---|
| /13 | 524,288 | 2 | 0.6% | 1,048,576 |
| /14 | 262,144 | 9 | 2.5% | 2,359,296 |
| /16 | 65,536 | 14 | 3.9% | 917,504 |
| /17 | 32,768 | 9 | 2.5% | 294,912 |
| /18 | 16,384 | 15 | 4.2% | 245,760 |
| /19 | 8,192 | 27 | 7.6% | 221,184 |
| /20 | 4,096 | 32 | 9.0% | 131,072 |
| /21 | 2,048 | 43 | 12.1% | 88,064 |
| /22 | 1,024 | 88 | 24.7% | 90,112 |
| /23 | 512 | 51 | 14.3% | 26,112 |
| /24 | 256 | 66 | 18.5% | 16,896 |
Top Receiving Countries
- 1🇸🇬 Singapore279K
- 2🇺🇸 United States78K
- 3🇭🇰 Hong Kong SAR China35K
- 4🇦🇫 Afghanistan33K
- 5🇨🇦 Canada19K
- 6🇲🇾 Malaysia1,024
- 7🇯🇵 Japan1,024
- 8🇹🇼 Taiwan1,024
Top Source Countries
- 1🇺🇸 United States282K
- 2🇨🇦 Canada78K
- 3🇦🇺 Australia33K
- 4🇭🇰 Hong Kong SAR China16K
- 5🇮🇳 India4,096
- 6🇨🇳 China2,048
- 7🇼🇸 Samoa1,024
IPv4 transferred across country borders in December 2015. Registry logs before mid-2025 do not carry a country for every transfer, so this ranking undercounts some regions.
Largest IPv4 Transfers December 2015
- 13.176.0.0/13inter-RIRTransfer ·
- 13.168.0.0/13inter-RIRTransfer ·
- 13.240.0.0/14inter-RIRTransfer ·
- 13.180.0.0/14inter-RIRTransfer ·
- 13.176.0.0/14inter-RIRTransfer ·
- 13.172.0.0/14inter-RIRTransfer ·
- 13.168.0.0/14inter-RIRTransfer ·
- 13.140.0.0/14inter-RIRTransfer ·
- 13.120.0.0/14inter-RIRTransfer ·
- 13.116.0.0/14inter-RIRTransfer ·
- 5.16.0.0/14Transfer ·
- 205.253.0.0/16inter-RIRTransfer ·
- 169.149.0.0/16inter-RIRTransfer ·
- 139.167.0.0/16inter-RIRTransfer ·
- 137.97.0.0/16inter-RIRTransfer ·
- 167.87.0.0/16inter-RIRTransfer ·
- 5.74.0.0/16Transfer ·
- 141.193.0.0/16M&A ·
- 173.204.0.0/16M&A ·
- 173.1.0.0/16M&A ·
- 161.211.0.0/16M&A ·
- 160.72.0.0/16M&A ·
- 62.179.0.0/16Transfer ·
- 5.3.0.0/16Transfer ·
- 167.82.0.0/16M&A ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 13.176.0.0/13inter-RIR | not published | Transfer | ||
| 13.168.0.0/13inter-RIR | not published | Transfer | ||
| 13.240.0.0/14inter-RIR | SoftLayer Technologies, Inc. | Transfer | ||
| 13.180.0.0/14inter-RIR | not published | SoftLayer Technologies, Inc. | Transfer | |
| 13.176.0.0/14inter-RIR | not published | SoftLayer Technologies, Inc. | Transfer | |
| 13.172.0.0/14inter-RIR | not published | SoftLayer Technologies, Inc. | Transfer | |
| 13.168.0.0/14inter-RIR | not published | SoftLayer Technologies, Inc. | Transfer | |
| 13.140.0.0/14inter-RIR | SoftLayer Technologies, Inc. | Transfer | ||
| 13.120.0.0/14inter-RIR | SoftLayer Technologies, Inc. | Transfer | ||
| 13.116.0.0/14inter-RIR | SoftLayer Technologies, Inc. | Transfer | ||
| 5.16.0.0/14 | Perspectiva Ltd. | JSC "ER-Telecom Holding" | Transfer | |
| 205.253.0.0/16inter-RIR | Transfer | |||
| 169.149.0.0/16inter-RIR | Transfer | |||
| 139.167.0.0/16inter-RIR | Transfer | |||
| 137.97.0.0/16inter-RIR | Transfer | |||
| 167.87.0.0/16inter-RIR | SIEMENS AG | Transfer | ||
| 5.74.0.0/16 | Link Telecom LLC | Iran Telecommunication Company PJS | Transfer | |
| 141.193.0.0/16 | M&A | |||
| 173.204.0.0/16 | M&A | |||
| 173.1.0.0/16 | M&A | |||
| 161.211.0.0/16 | M&A | |||
| 160.72.0.0/16 | M&A | |||
| 62.179.0.0/16 | UPC Austria GmbH | Liberty Global Operations B.V. | Transfer | |
| 5.3.0.0/16 | Perspectiva Ltd. | JSC "ER-Telecom Holding" | Transfer | |
| 167.82.0.0/16 | M&A |