Longest Match / Organisations

Registered organisation

ALFA TELECOM s.r.o.

Address space registered to ALFA TELECOM s.r.o., and where it is announced from.

Registered holders come from the bulk whois that RIPE, APNIC and AFRINIC publish. ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.

What this tells you

• Holds 101,632 IPv4 addresses across 12 registered blocks.
• Announced by 10 networks, the largest being AS44546 ALFA TELECOM s.r.o. at 93% of the IPv4 space.
• Its space resolves to 7 countries, mostly Czechia (91% of the IPv4 space).

Networks announcing this space

Space announced by a network covers 100% of this holder's IPv4 space. The table below divides that space.

Network	IPv4 share
AS44546 ALFA TELECOM s.r.o.	93%
AS57888 Telesat d.o.o.	3%
AS39906 CoProSys a.s.	1%
AS61312 Ethereal - cable television EKTA - BROVARY Ltd.	0.8%
AS50334 Join stock Grodno Regional Techno Commercial Centre GARANT	0.5%
AS61433 Region plus Ltd.	0.5%
AS59679 Agenstvo po rasprostraneniu zarubejnih izdaniy OJSC	0.3%
AS59525 "Siberian generating company" Limited liability company	0.3%
Everything else (2 more)	0.5%

Countries this space resolves to

Space we can place in a country covers 100% of this holder's IPv4 space. The table below divides that space.

Country	IPv4 share
Czechia	91%
Bosnia and Herzegovina	3%
Syria	2%
Ukraine	2%
Russia	1%
Belarus	0.5%
Kyrgyzstan	0.3%

Holding a block is a registry fact, not a physical one. The organisation named here is who the block is assigned to, which is often a customer of the network operator announcing it.

Every figure on this page is also JSON: /api/v2/directory/org/alfa-telecom-s-r-o. Breakdowns paginate from there, so a table showing the largest rows here returns all of them. Read the API.