IPv4 Transfers May 2019

In May 2019, the five Regional Internet Registries recorded 1,093 transfers: 10,066,688 IPv4 addresses in 863 blocks, plus 69 IPv6 blocks and 161 AS numbers. 16 transfers moved resources between two registries. Dates are the dates the registry processed the transfer.

IPv4 addresses transferred
10.1M
863 IPv4 blocks
Registry transfers
1,093
69 IPv6 / 161 ASN
Inter-RIR transfers
16
229K IPv4 addresses (2%)
Mergers and acquisitions
570
523 market transfers

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, May 2019
RegistryTransfersIPv4 receivedInter-RIR inInter-RIR out
ARIN5848,644,3523,840221,440
RIPE NCC4651,081,60025,8564,608
APNIC35323,328199,6803,328
LACNIC917,408--

Inter-RIR Transfers May 2019

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-
1,536
3 transfers
3,072
3 transfers
00
ARIN
25K
3 transfers
-
197K
3 transfers
00
APNIC
1,024
1 transfers
2,304
3 transfers
-00
LACNIC000-0
AFRINIC0000-

IPv4 Transfers by Block Size

Number of transferred IPv4 blocks per prefix length.

IPv4 transfers by prefix length, May 2019
Prefix lengthAddresses per blockBlocksShare of blocksIPv4 addresses
/14262,14440.5%1,048,576
/15131,07230.3%393,216
/1665,5369410.9%6,160,384
/1732,768121.4%393,216
/1816,384414.8%671,744
/198,192768.8%622,592
/204,096758.7%307,200
/212,048778.9%157,696
/221,02421625.0%221,184
/235129010.4%46,080
/2425617520.3%44,800

Top Receiving Countries

  1. 1🇯🇵 Japan66K
  2. 2🇨🇦 Canada30K
  3. 3🇦🇼 Aruba8,192
  4. 4🇸🇬 Singapore4,096
  5. 5🇦🇺 Australia3,072
  6. 6🇺🇸 United States2,048
  7. 7🇮🇳 India1,536
  8. 8🇭🇰 Hong Kong SAR China1,024
  9. 9🇵🇷 Puerto Rico1,024

Top Source Countries

  1. 1🇺🇸 United States227K
  2. 2🇦🇷 Argentina8,192
  3. 3🇮🇳 India4,096
  4. 4🇦🇺 Australia4,096
  5. 5🇳🇿 New Zealand1,536
  6. 6🇨🇱 Chile1,024
  7. 7🇨🇦 Canada1,024
  8. 8🇧🇩 Bangladesh256

IPv4 transferred across country borders in May 2019. Registry logs before mid-2025 do not carry a country for every transfer, so this ranking undercounts some regions.

Largest IPv4 Transfers May 2019