IPv4 Transfers March 2019

In March 2019, the five Regional Internet Registries recorded 961 transfers: 12,371,456 IPv4 addresses in 727 blocks, plus 68 IPv6 blocks and 166 AS numbers. 18 transfers moved resources between two registries. Dates are the dates the registry processed the transfer.

IPv4 addresses transferred
12.4M
727 IPv4 blocks
Registry transfers
961
68 IPv6 / 166 ASN
Inter-RIR transfers
18
468K IPv4 addresses (4%)
Mergers and acquisitions
345
616 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, March 2019
RegistryTransfersIPv4 receivedInter-RIR inInter-RIR out
ARIN2667,472,38466,560336,384
RIPE NCC6484,608,768237,82498,304
APNIC47290,304164,09633,792

Inter-RIR Transfers March 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-
66K
1 transfers
33K
1 transfers
00
ARIN
205K
11 transfers
-
131K
3 transfers
00
APNIC
33K
1 transfers
1,024
1 transfers
-00
LACNIC000-0
AFRINIC0000-

IPv4 Transfers by Block Size

Number of transferred IPv4 blocks per prefix length.

IPv4 transfers by prefix length, March 2019
Prefix lengthAddresses per blockBlocksShare of blocksIPv4 addresses
/104,194,30410.1%4,194,304
/13524,28820.3%1,048,576
/14262,14420.3%524,288
/15131,07281.1%1,048,576
/1665,536527.2%3,407,872
/1732,768192.6%622,592
/1816,384294.0%475,136
/198,192517.0%417,792
/204,096638.7%258,048
/212,048517.0%104,448
/221,02417423.9%178,176
/235128311.4%42,496
/2425619226.4%49,152

Top Receiving Countries

  1. 1🇵🇭 Philippines33K
  2. 2🇨🇦 Canada17K
  3. 3🇺🇸 United States16K
  4. 4🇸🇬 Singapore8,448
  5. 5🇭🇰 Hong Kong SAR China2,048
  6. 6🇰🇭 Cambodia1,024
  7. 7🇹🇭 Thailand1,024
  8. 8🇲🇾 Malaysia1,024
  9. 9🇵🇷 Puerto Rico1,024

Top Source Countries

  1. 1🇺🇸 United States150K
  2. 2🇵🇰 Pakistan33K
  3. 3🇨🇦 Canada15K
  4. 4🇦🇺 Australia8,192
  5. 5🇮🇳 India5,120
  6. 6🇨🇳 China1,024
  7. 7🇭🇰 Hong Kong SAR China256

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

Largest IPv4 Transfers March 2019