HomeASN LookupAS6855

AS6855 SK-TELEKOM Slovak Telekom, a.s.

🇸🇰

Org handle: ORG-ST4-RIPE

Slovak Telekom / T-Mobile CZ

RIPE NCCallocated
Announced Prefixes (BGP)
46total
37 IPv49 IPv6
IPv4 Addresses
Allocated (RIR)660,264
Announced (BGP)663,552
IPv6 Addresses
Allocated (RIR)7.1×10²⁹
Announced (BGP)7.1×10²⁹
Prefix Limit (IPv4)
1,000
Prefix Limit (IPv6)
50
Country
🇸🇰 SK
RIR
RIPE NCC
Status
allocated
Allocated
1996-12-03

Routing hygiene

Score 13/100 · Low risk
RPKI ROA coverage
76.1%
no RPKI invalid prefixes
IRR route objects
100%
no origin mismatches
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
3
diversity 42/100
  • 24% of announced prefixes (11 of 46) have no valid ROA

Based on 46 announced prefixes, updated daily (2026-10-26). How the score works · RPKI explained

Listed on the threat map (2026-10-26)

Large hosting providers appear because attackers rent their servers, not necessarily because of the operator.

Announced Prefixes

(BGP)46
|
Prefix
RPKI
IRR
Last Seen
78.98.0.0/15
 Valid
RIPE
2026-10-27
84.47.0.0/17
 Valid
RIPE
2026-10-27
85.239.68.0/24
No ROA
RIPE
2026-10-27
85.239.69.0/24
No ROA
RIPE
2026-10-27
85.239.80.0/23
No ROA
RIPE
2026-10-27
85.239.82.0/23
No ROA
RIPE
2026-10-27
85.239.84.0/22
No ROA
RIPE
2026-10-27
85.248.31.0/24
 Valid
RIPE
2026-10-27
85.248.74.0/24
 Valid
RIPE
2026-10-27
87.197.0.0/16
 Valid
RIPE
2026-10-27
1-10 of 46
1 / 5

Allocated Prefixes

(RIR)37
Prefix
Country
RIR
Status
78.98.0.0/15🇸🇰 SKRIPENCCallocated
84.47.0.0/17🇸🇰 SKRIPENCCallocated
85.239.84.0/22🇨🇿 CZRIPEassigned
85.248.74.0/24🇸🇰 SKRIPEassigned
87.197.0.0/16🇸🇰 SKRIPENCCallocated
91.127.0.0/16🇸🇰 SKRIPENCCallocated
91.245.16.0/23🇨🇿 CZRIPEassigned
95.102.0.0/15🇸🇰 SKRIPENCCallocated
178.40.0.0/15🇸🇰 SKRIPENCCallocated
185.58.102.0/24🇸🇰 SKRIPEassigned
1-10 of 37
1 / 4

All 46 announced prefixes of AS6855 →

Downstream Customers(6)

ASNName
AS30929🇸🇰GOLEMTECH-AS GOLEM TECH s.r.o.
AS39904🇨🇿MERIT-AS MERIT GROUP a.s
AS47767🇨🇿RCO-AS Regionalni centrum Olomouc s.r.o.
AS59747🇨🇿NIX-DR NIX.CZ z.s.p.o.
AS60086🇨🇿VALVERA Valvera s.r.o.
AS198101🇨🇿KOOPERATIVA-AS Kooperativa pojistovna, a.s., Vienna Insurance Group

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS6855 hands its own prefixes to: transit providers, or peers at an exchange.

  • AS1299TWELVE99 Arelion Sweden AB37
  • AS3320DTAG Deutsche Telekom9

Downstreams (86)

Networks whose own prefixes AS6855 passes on: usually its customers.

  • AS13036TMOBILE CZ T Mobile Czech Republic A.S37
  • AS29148ASSURANY SURANY.NET S.R.O15
  • AS48298GOVCZ MINISTERSTVO VNITRA CR10
  • AS49117DTNETSK DTnet Detva S.R.O10
  • AS29134IGNUM Webglobe, S.R.O9
  • AS30898CRSR DataCentrum7
  • AS21433AccentureFSSC Accenture UK Limited6
  • AS50881ESET ESET, Spol. S R.O6
  • AS201603AIRNET SK AIRNET S.R.O6
  • AS203165SPCSS Statni Pokladna Centrum Sdilenych Sluzeb, S.P6
  • AS208414WEDOS GLOBAL WEDOS Internet, A.S6
  • AS58239ASHANSPAULCITY Hanspaul City.Net S.R.O5
  • AS203208CTU AS4 2 Czech Telecommunication Office5
  • AS31127SATRO S.R.O4
  • AS34475Agrostroj Pelhrimov, A.S4
  • AS201447CNB The Czech National Bank4
  • AS201841SK PETITPRESS ASN Petit Press, A.S4
  • AS202564ITCITY S.R.O4
  • AS204690Olimsk PLAYMAX S.R.O4
  • AS20708SKODA AUTO SKODA AUTO A.S3
  • AS39904MERIT GROUP A.S3
  • AS44424AS44424 Allegro Retail A.S3
  • AS47749ORIFLAME SOFTWARE S.R.O3
  • AS48574ASN CZ PLANET A 48574 T Mobile Czech Republic A.S3
  • AS49044DIGISK DIGI SLOVAKIA, S.R.O3
  • AS50695VLP VLTAVA LABE MEDIA A.S3
  • AS50698TETA S.R.O3
  • AS56973VITSOL VITKOVICE IT SOLUTIONS A.S3
  • AS196861DIGIACT DIGITAL ACTION S.R.O3
  • AS199220KRS CZ KrU Stredoceskeho Kraje3
  • AS207434GRC Generalni Reditelstvi Cel3
  • AS208882COOLNET1 SK Automation & Business, S.R.O3
  • AS211731MPSV CZ Ministry Of Labour And Social Affairs3
  • AS2571DHL Information Services (Europe) S.R.O2
  • AS25093CSAS CZ Ceska Sporitelna A.S2
  • AS28892CUZK NET Cesky Urad Zememericky A Katastralni2
  • AS34521ATOS SK Atos Slovakia S.R.O2
  • AS35096ALEFNULA Alef Nula A.S2
  • AS43757ICZAS CZ ICZ A.S2
  • AS44234GAYA Gaya, S.R.O2
  • AS48907ASNORTTEL Norttel S.R.O2
  • AS60829ASNEVERNET NEVERNET, S.R.O2
  • AS197694MEPNET Municipal Office Of The City Prague2
  • AS198103CCS CZ CCS Ceska Spolecnost Pro Platebni Karty S.R.O2
  • AS198494PREGIS PREGIS, A.S2
  • AS198543SK JOJ ASN MAC TV S.R.O2
  • AS200355CADCANET Plus S. R. O2
  • AS201163KB CZ Komercni Banka, A.S2
  • AS203411FORTUNA GAME PUB FORTUNA GAME A.S2
  • AS204394CORTEX Cortex, A.S2
  • AS207696DPP Dopravni Podnik Hl.M. Prahy, A.S2
  • AS208329Ceska Televize Ceska Televize2
  • AS210117ASORAVASK OravaSK S.R.O2
  • AS213057Innogycz Innogy Ceska Republika A.S2
  • AS213152NBU Narodni Bezpecnostni Urad Czech Republic2
  • AS213247JUKO S.R.O. Presov2
  • AS214396SUDOLIO A.S2
  • AS214945MZVCR Ministerstvo Zahranicnich Veci Ceske Republiky2
  • AS3573Accenture LLP1
  • AS6658NAPRI S.R.O1
  • AS16158MAVENIR1
  • AS34462DITEC DITEC, A.S1
  • AS39453UZIS Ustav Zdravotnickych Informaci A Statistiky Ceske Republiky1
  • AS47767RCO Regionalni Centrum Olomouc S.R.O1
  • AS54189Maxion Wheels U.S.A1
  • AS56891ASCZRB Narodni Rozvojova Banka, A.S1
  • AS56955JANGALBAC NET Jan Galbac1
  • AS57007ASNITEX NITEX ISP S.R.O1
  • AS57788RINGIERSK Ringier Slovakia Media S.R.O1
  • AS60086VALVERA S.R.O1
  • AS197642ST IDC2 Slovak Telekom, A.S1
  • AS198101KOOPERATIVA Pojistovna, A.S., Vienna Insurance Group1
  • AS200055PENTA36 Penta Investments Limited1
  • AS200222Samanet Sama Tech S.R.O1
  • AS200646BHSEC PRG BH Securities, A.S1
  • AS201997SK MCOM NET S.R.O1
  • AS202830KBCGROUP DCSK KBC GLOBAL SERVICES NV1
  • AS202876Bbnw S.R.O1
  • AS203080SAP SE PRG SAP SE1
  • AS204716Playmax S.R.O1
  • AS205080SITA CORPORATE Societe Internationale De Telecommunications Aeronautiques1
  • AS206198ELVISDK ELVISDK, S.R.O1
  • AS206908PL FORTUNA GAME FORTUNA GAME A.S1
  • AS206909NMH News And Media Holding A.S1
  • AS209100Tpnet TP NET Plus S.R.O1
  • AS215718IBAGroup IBA Group A.S1

Other adjacent networks (1)

Adjacent to AS6855 in the transit part of AS paths: peers, providers or customers.

  • AS33891CORE BACKBONE Core Backbone38
ASPA
No ASPA0 upstreams, 6 downstreams
Listed as Upstream Provider by
6 ASNs
View full ASPA details →
Abuse Contact
External Links
RIPE WhoisRIPEstat

Learn more

API
Open
GEThttps://api.ipctl.io/v1/asn/6855

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/6855" | jq