IPv4 Transfers 2015

In 2015, the five Regional Internet Registries recorded 4,349 transfers that moved 62,990,080 IPv4 addresses in 3,998 blocks, 91 of them between two registries. Figures come from the RIRs' official transfer logs and include mergers and acquisitions.

IPv4 addresses transferred
63.0M
3,998 IPv4 blocks
Registry transfers
4,349
83 IPv6 / 268 ASN
Inter-RIR transfers
91
7.0M IPv4 addresses (11%)
Mergers and acquisitions
528
3,821 market transfers

Monthly Transfer Volume 2015 by receiving RIR

IPv4 transfers per month in 2015
MonthTransfersIPv4 addresses
December 20154285,439,488
November 20153489,269,248
October 20153473,156,736
September 20153558,235,520
August 20153907,812,864
July 20153611,946,880
June 20154891,366,016
May 20152453,584,512
April 20153442,388,480
March 20154013,973,888
February 20154426,830,336
January 20151998,986,112

Transfer Volume by RIR

Transfers counted at the receiving registry. Inter-RIR columns show IPv4 that entered or left the region.

Transfers per Regional Internet Registry, 2015
RegistryTransfersIPv4 receivedInter-RIR inInter-RIR out
ARIN83844,804,35210,2406,997,504
RIPE NCC3,00511,606,2723,216,384-
APNIC5066,579,4563,781,12010,240

Inter-RIR Transfers 2015

IPv4 addresses moved from one registry to another. All inter-RIR transfers

IPv4 addresses transferred between Regional Internet Registries
From ↓ / To →RIPE NCCARINAPNICLACNICAFRINIC
RIPE NCC-0000
ARIN
3.2M
13 transfers
-
3.8M
75 transfers
00
APNIC0
10K
3 transfers
-00
LACNIC000-0
AFRINIC0000-

IPv4 Transfers by Block Size

Number of transferred IPv4 blocks per prefix length.

IPv4 transfers by prefix length, 2015
Prefix lengthAddresses per blockBlocksShare of blocksIPv4 addresses
/104,194,30410.0%4,194,304
/112,097,15280.2%16,777,216
/121,048,576100.3%10,485,760
/13524,28890.2%4,718,592
/14262,144240.6%6,291,456
/15131,072330.8%4,325,376
/1665,5361193.0%7,798,784
/1732,768511.3%1,671,168
/1816,384902.3%1,474,560
/198,1921894.7%1,548,288
/204,0962907.3%1,187,840
/212,04845211.3%925,696
/221,02493523.4%957,440
/2351268817.2%352,256
/242561,09927.5%281,344

Top Receiving Countries

  1. 1🇺🇸 United States6.3M
  2. 2🇨🇳 China3.5M
  3. 3🇸🇬 Singapore496K
  4. 4🇯🇵 Japan431K
  5. 5🇹🇭 Thailand262K
  6. 6🇨🇦 Canada127K
  7. 7🇵🇭 Philippines66K
  8. 8🇭🇰 Hong Kong SAR China37K
  9. 9🇦🇫 Afghanistan33K

Top Source Countries

  1. 1🇨🇦 Canada8.2M
  2. 2🇺🇸 United States1.6M
  3. 3🇭🇰 Hong Kong SAR China1.0M
  4. 4🇯🇵 Japan82K
  5. 5🇦🇺 Australia44K
  6. 6🇵🇭 Philippines30K
  7. 7🇧🇩 Bangladesh8,192
  8. 8🇻🇬 British Virgin Islands6,144
  9. 9🇸🇬 Singapore5,120

IPv4 transferred across country borders in 2015. Registry logs before mid-2025 do not carry a country for every transfer, so this ranking undercounts some regions.

Largest IPv4 Transfers 2015