IP ranges in Slovakia

This page lists the IPv4 address blocks registered to organisations in Slovakia and checks single addresses. The basics of IP addresses, masks and subnets are in Networks; the other countries are in IP ranges by country.

Slovakia in numbers

The 48 countries here hold 725,908,608 IPv4 addresses; Slovakia has 2,684,928 in 441 blocks, 0.370% of the total, rank 26 of 48. The country just above it is Slovenia with the same 2,684,928 addresses (0.370%), the one just below Croatia with 2,356,224 addresses (0.325%). There are 441 blocks: 322 allocated (73.0%) and 119 assigned (27.0%). The oldest block was delegated in 1991 and the newest in 2026; 2011 is the year with the most new blocks. The largest share of the addresses, 1,285,888 of 2,684,928 (47.9%), came in the 2000s. The same RIPE file lists 152 IPv6 prefixes and 229 AS numbers for Slovakia.

Check an IP address

Type an IPv4 address. The answer comes from the Sypex Geo database on this server; like every geolocation database it can be wrong, especially about the city.

Where the list comes from

IP addresses are handed out by five regional internet registries. For Slovakia the registry is RIPE NCC, which publishes every day which address blocks it has delegated to which country. A block registered in Slovakia is usually used there, but not always: a company may use its addresses abroad, and a VPN makes any visitor look like someone else.

The table below is the RIPE file of 2026-10-29: 441 blocks with 2,684,928 addresses. The largest block holds 131,072 addresses and starts at 78.98.0.0.

Get the list yourself

Download the statistics file of RIPE NCC:

curl -s -O https://ftp.ripe.net/pub/stats/ripencc/delegated-ripencc-latest

The first line says when it was made; the sixth field is the date:

head -1 delegated-ripencc-latest

2|ripencc|1793314799|167770|19700101|20261029|+0100

Each later line is one block: registry, country, type, first address, number of addresses, date and status. The IPv4 blocks of Slovakia, sorted by first address:

awk -F'|' '$2=="SK" && $3=="ipv4"' delegated-ripencc-latest | sort -t'|' -k1,1V | head -3

ripencc|SK|ipv4|2.57.64.0|1024|20190318|allocated ripencc|SK|ipv4|5.34.168.0|2048|20120511|allocated ripencc|SK|ipv4|5.42.148.0|1024|20120518|allocated

How many blocks, and how many addresses they hold together:

awk -F'|' '$2=="SK" && $3=="ipv4"' delegated-ripencc-latest | wc -l

441

awk -F'|' '$2=="SK" && $3=="ipv4" {s+=$5} END {print s}' delegated-ripencc-latest

2684928

allocated means RIPE gave the block to a provider (a LIR) to hand out further; assigned means it went to an end user directly.

Who owns a block

The statistics name no owners. The RIPE database does: ask it with whois for any address of a block, and look at the lines netname, descr and org:

whois 78.98.0.1

All IPv4 blocks in Slovakia

From the RIPE file of 2026-10-29, sorted by address. The last address is the first one plus the size minus one.

Article author: Arthur Isaev