IPv4 Transfers May 2025

In May 2025, the five Regional Internet Registries recorded 981 transfers: 7,415,552 IPv4 addresses in 734 blocks, plus 89 IPv6 blocks and 158 AS numbers. 57 transfers moved resources between two registries. Dates are the dates the registry processed the transfer.

IPv4 addresses transferred
7.4M
734 IPv4 blocks
Registry transfers
981
89 IPv6 / 158 ASN
Inter-RIR transfers
57
1.4M IPv4 addresses (19%)
Mergers and acquisitions
325
656 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 2025
RegistryTransfersIPv4 receivedInter-RIR inInter-RIR out
ARIN2884,605,9521,7921,333,504
RIPE NCC5482,139,6481,357,312768
APNIC114593,15216,38424,320
LACNIC3176,80076817,664

Inter-RIR Transfers May 2025

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-
256
1 transfers
0
512
1 transfers
0
ARIN
1.3M
37 transfers
-
16K
1 transfers
00
APNIC
24K
12 transfers
256
1 transfers
-
256
1 transfers
0
LACNIC
16K
1 transfers
1,280
2 transfers
0-0
AFRINIC0000-

IPv4 Transfers by Block Size

Number of transferred IPv4 blocks per prefix length.

IPv4 transfers by prefix length, May 2025
Prefix lengthAddresses per blockBlocksShare of blocksIPv4 addresses
/14262,14420.3%524,288
/15131,072111.5%1,441,792
/1665,536486.5%3,145,728
/1732,768263.5%851,968
/1816,384283.8%458,752
/198,192516.9%417,792
/204,096476.4%192,512
/212,048577.8%116,736
/221,02415621.3%159,744
/2351210714.6%54,784
/2425620127.4%51,456

Top Receiving Countries

  1. 1🇺🇸 United States71K
  2. 2🇨🇦 Canada68K
  3. 3🇨🇳 China36K
  4. 4🇭🇰 Hong Kong SAR China23K
  5. 5🇱🇹 Lithuania16K
  6. 6🇸🇬 Singapore5,120
  7. 7🇹🇭 Thailand4,096
  8. 8🇯🇵 Japan2,304
  9. 9🇨🇴 Colombia2,048

Top Source Countries

  1. 1🇺🇸 United States84K
  2. 2🇨🇦 Canada68K
  3. 3🇭🇰 Hong Kong SAR China52K
  4. 4🇨🇳 China24K
  5. 5🇲🇽 Mexico18K
  6. 6🇮🇳 India5,888
  7. 7🇳🇿 New Zealand4,352
  8. 8🇦🇺 Australia2,816
  9. 9🇧🇷 Brazil2,048

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

Largest IPv4 Transfers May 2025