$ query “AS6855” --type=asn → 1 result(s)

AS6855 · SK-TELEKOM

Slovak Telekom a.s.

AS6855 belongs to Slovak Telekom a.s. and is a major transit provider, registered in Slovakia. The system announces a solid 663 040 IPv4 addresses, including a /15, and supports IPv6. Its primary geographic footprint is in Slovakia, with additional presence in Czechia.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #3 in Slovakia — Top 10 by reach within country

Basic Information

Country
🇸🇰 Slovakia
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
April 30, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
36 / 28
IPv6 Prefixes (raw / aggregated)
8 / 8
IPv4 Addresses
663 040
Largest IPv4 Prefix
/15 (131 072 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇸🇰 Slovakia (1 312 256 IPs), 🇨🇿 Czechia (11 408 IPs)
Prefix Changed
March 20, 2026

Reputation

Reputation
Good — 14 flagged IPs out of 663 040 total (0.00%)

Connectivity Summary

Upstream Providers
3 upstreams providing transit
Peers
8 networks exchanging traffic without transit
Downstream Customers
103 downstreams buying transit
Unclassified
3 unclassified BGP neighbors
Degree
117 unique BGP neighbors
Reach
120 networks in customer cone

Upstream Providers (3)

  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS33891 — CORE-BACKBONE
  • AS3320 — DTAG (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (36 total)

  • 178.40.0.0/15 (131 072 addresses (/15 prefix))
  • 95.102.0.0/15 (131 072 addresses (/15 prefix))
  • 78.98.0.0/15 (131 072 addresses (/15 prefix))
  • 87.197.0.0/16 (65 536 addresses (/16 prefix))
  • 91.127.0.0/16 (65 536 addresses (/16 prefix))
  • 195.91.0.0/17 (32 768 addresses (/17 prefix))
  • 213.81.128.0/17 (32 768 addresses (/17 prefix))
  • 84.47.0.0/17 (32 768 addresses (/17 prefix))
  • 212.5.192.0/19 (8 192 addresses (/19 prefix))
  • 195.146.128.0/19 (8 192 addresses (/19 prefix))
  • 213.160.160.0/19 (8 192 addresses (/19 prefix))
  • 194.154.224.0/19 (8 192 addresses (/19 prefix))
  • 85.239.80.0/21 (2 048 addresses (/21 prefix))
  • 193.84.96.0/22 (1 024 addresses (/22 prefix))
  • 91.195.106.0/23 (512 addresses (/23 prefix))
  • 91.245.16.0/23 (512 addresses (/23 prefix))
  • 85.239.68.0/23 (512 addresses (/23 prefix))
  • 185.58.102.0/23 (512 addresses (/23 prefix))
  • 85.248.31.0/24 (256 addresses (/24 prefix))
  • 194.50.215.0/24 (256 addresses (/24 prefix))
  • 194.48.241.0/24 (256 addresses (/24 prefix))
  • 193.201.110.0/24 (256 addresses (/24 prefix))
  • 193.84.245.0/24 (256 addresses (/24 prefix))
  • 193.84.7.0/24 (256 addresses (/24 prefix))
  • 195.216.240.0/24 (256 addresses (/24 prefix))
  • 85.248.74.0/24 (256 addresses (/24 prefix))
  • 194.169.224.0/24 (256 addresses (/24 prefix))
  • 193.200.143.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (8 total)

  • 2a00:12a8::/29
  • 2a01:5f7::/32
  • 2a00:6bc0::/40
  • 2001:678:c14::/48
  • 2001:67c:16c0::/48
  • 2001:67c:1bc4::/48
  • 2001:67c:2cc0::/48
  • 2001:67c:2f9c::/48