List of the top 20 organizations with the largest IP allocations in Croatia
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Hrvatski Telekom d.d. | 1,632,512 | 1.13 x 236 | 2 | 397 | |
| A1 Hrvatska d.o.o. | 407,296 | 1.75 x 235 | 6 | 57 | |
| Telemach Hrvatska d.o.o. | 278,528 | 1.25 x 235 | 2 | 31 | |
| 4 | Croatian Academic and Research Network | 230,144 | 232 | 1 | 8 |
| 5 | Telesat d.o.o. | 30,720 | 0 | 1 | 22 |
| 6 | Terrakom d.o.o. | 21,248 | 0 | 1 | 23 |
| 7 | MAGIC NET D.O.O. | 14,848 | 235 | 1 | 10 |
| 8 | 4Tel Telekomunikacije d.o.o. | 10,496 | 236 | 1 | 29 |
| 9 | BT NET d.o.o. za trgovinu i usluge | 10,240 | 0 | 1 | 7 |
| 10 | MAXKO d.o.o. | 9,216 | 1.75 x 234 | 1 | 45 |
| 11 | SETCOR d.o.o. | 8,960 | 232 | 1 | 24 |
| 12 | CRATIS d.o.o. | 7,680 | 0 | 1 | 15 |
| 13 | Sedmi Odjel d.o.o. | 7,424 | 232 | 2 | 11 |
| 14 | DATABOX d.o.o. | 6,144 | 0 | 1 | 9 |
| 15 | OMONIA d.o.o. | 5,888 | 232 | 1 | 8 |
| 16 | HEP-TELEKOMUNIKACIJE d.o.o. | 5,888 | 0 | 2 | 8 |
| 17 | Plus Hosting Grupa d.o.o. | 5,632 | 232 | 1 | 5 |
| 18 | Financijska agencija | 5,120 | 0 | 1 | 5 |
| 19 | Optika Kabel TV d.o.o. | 5,120 | 0 | 1 | 9 |
| 20 | PRO-PING d.o.o. | 4,096 | 0 | 1 | 16 |