IPv4 Transfers 2011
In 2011, the five Regional Internet Registries recorded 135 transfers that moved 3,738,624 IPv4 addresses in 135 blocks, 0 of them between two registries. Figures come from the RIRs' official transfer logs and include mergers and acquisitions.
IPv4 addresses transferred
3.7M
135 IPv4 blocks
Registry transfers
135
0 IPv6 / 0 ASN
Inter-RIR transfers
0
0 IPv4 addresses (0%)
Mergers and acquisitions
0
135 market transfers
Monthly Transfer Volume 2011 by receiving RIR
| Month | Transfers | IPv4 addresses |
|---|---|---|
| December 2011 | 13 | 1,139,200 |
| November 2011 | 6 | 6,912 |
| October 2011 | 7 | 1,265,664 |
| September 2011 | 25 | 192,512 |
| August 2011 | 24 | 406,528 |
| July 2011 | 2 | 1,280 |
| June 2011 | 35 | 436,480 |
| May 2011 | 9 | 17,920 |
| April 2011 | 5 | 199,168 |
| March 2011 | 1 | 256 |
| February 2011 | 3 | 66,048 |
| January 2011 | 5 | 6,656 |
Transfer Volume by RIR
Transfers counted at the receiving registry. Inter-RIR columns show IPv4 that entered or left the region.
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 | 2 | 1.5% | 2,097,152 |
| /15 | 131,072 | 1 | 0.7% | 131,072 |
| /16 | 65,536 | 17 | 12.6% | 1,114,112 |
| /17 | 32,768 | 4 | 3.0% | 131,072 |
| /18 | 16,384 | 3 | 2.2% | 49,152 |
| /19 | 8,192 | 12 | 8.9% | 98,304 |
| /20 | 4,096 | 14 | 10.4% | 57,344 |
| /21 | 2,048 | 16 | 11.9% | 32,768 |
| /22 | 1,024 | 12 | 8.9% | 12,288 |
| /23 | 512 | 6 | 4.4% | 3,072 |
| /24 | 256 | 48 | 35.6% | 12,288 |
Top Receiving Countries
- 1🇭🇰 Hong Kong SAR China1.2M
- 2🇺🇸 United States260K
- 3🇸🇬 Singapore33K
- 4🇲🇲 Myanmar (Burma)1,024
- 5🇲🇾 Malaysia256
Top Source Countries
- 1🇨🇳 China1.2M
- 2🇨🇦 Canada257K
- 3🇮🇩 Indonesia33K
- 4🇰🇳 St. Kitts & Nevis1,280
- 5🇲🇾 Malaysia1,280
- 6🇵🇷 Puerto Rico1,024
- 7🇳🇱 Netherlands256
- 8🇭🇰 Hong Kong SAR China256
IPv4 transferred across country borders in 2011. Registry logs before mid-2025 do not carry a country for every transfer, so this ranking undercounts some regions.
Largest IPv4 Transfers 2011
- 54.240.0.0/12Transfer ·
- 39.96.0.0/12Transfer ·
- 101.252.0.0/15Transfer ·
- 174.44.0.0/16Transfer ·
- 119.9.0.0/16Transfer ·
- 118.189.0.0/16Transfer ·
- 123.63.0.0/16Transfer ·
- 140.83.0.0/16Transfer ·
- 160.153.0.0/16Transfer ·
- 192.32.0.0/16Transfer ·
- 137.116.0.0/16Transfer ·
- 137.117.0.0/16Transfer ·
- 134.177.0.0/16Transfer ·
- 132.245.0.0/16Transfer ·
- 141.251.0.0/16Transfer ·
- 138.91.0.0/16Transfer ·
- 137.135.0.0/16Transfer ·
- 134.170.0.0/16Transfer ·
- 36.254.0.0/16Transfer ·
- 130.167.0.0/16Transfer ·
- 180.240.128.0/17Transfer ·
- 112.141.128.0/17Transfer ·
- 112.141.0.0/17Transfer ·
- 131.253.128.0/17Transfer ·
- 49.249.128.0/18Transfer ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 54.240.0.0/12 | Transfer | |||
| 39.96.0.0/12 | Transfer | |||
| 101.252.0.0/15 | Transfer | |||
| 174.44.0.0/16 | Transfer | |||
| 119.9.0.0/16 | Transfer | |||
| 118.189.0.0/16 | Transfer | |||
| 123.63.0.0/16 | Transfer | |||
| 140.83.0.0/16 | Oracle USA, Inc. | Oracle Corporation | Transfer | |
| 160.153.0.0/16 | Transfer | |||
| 192.32.0.0/16 | Transfer | |||
| 137.116.0.0/16 | Transfer | |||
| 137.117.0.0/16 | Transfer | |||
| 134.177.0.0/16 | Transfer | |||
| 132.245.0.0/16 | Transfer | |||
| 141.251.0.0/16 | Transfer | |||
| 138.91.0.0/16 | Transfer | |||
| 137.135.0.0/16 | Transfer | |||
| 134.170.0.0/16 | Transfer | |||
| 36.254.0.0/16 | Transfer | |||
| 130.167.0.0/16 | Transfer | |||
| 180.240.128.0/17 | Transfer | |||
| 112.141.128.0/17 | Transfer | |||
| 112.141.0.0/17 | Transfer | |||
| 131.253.128.0/17 | Transfer | |||
| 49.249.128.0/18 | Transfer |