AS16246 O2 Czech Republic, a.s. 🇨🇿 CZ
Announcing 15 prefixes, seen at the RIS collectors.
IPv4 prefixes
13
133,120 (520 × /24)
IPv6 prefixes
2
9 × /32
Upstreams
2
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
14
transit customers observed
Customer cone
28
ASes reachable through it
Registry and operator data
- AS number
- AS16246
- Name
- O2 Czech Republic, a.s.
- Organisation
- Nej.cz s.r.o.
- Country
- 🇨🇿 CZ
- RIR
- RIPENCC
- Allocated
- 2001-02-07
- Network type
- Cable/DSL/ISP
- Traffic levels
- 300-500Gbps
- Scope
- Regional
- Peering policy
- Open
- IRR as-set
- AS-NEJCZ-TRANSIT
- Website
- http://www.nej.cz
- PeeringDB
- net/2265
- Facilities
- 2
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Upstreams
Networks seen providing transit to this one
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS5610 O2 Czech Republic, a.s. | 🇨🇿 CZ | 82 | 67 | 3,913 | CAIDA |
Peers
Adjacencies that look settlement-free rather than transit
No peers observed at the collectors.
Downstreams
Networks this one appears to provide transit to
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS12570 O2 Czech Republic, a.s. | 🇨🇿 CZ | 16 | 11 | 1,297 | CAIDA |
| AS41046 O2 Czech Republic, a.s. | 🇨🇿 CZ | 0 | 8 | 412 | CAIDA |
| AS62178 MASTER IT Technologies, a.s. | 🇨🇿 CZ | 0 | 8 | 363 | CAIDA |
| AS31246 O2 Czech Republic, a.s. | 🇨🇿 CZ | 0 | 5 | 282 | CAIDA |
| AS29321 O2 Czech Republic, a.s. | 🇨🇿 CZ | 0 | 5 | 243 | CAIDA |
| AS212315 Frantisek Toman | 🇨🇿 CZ | 0 | 3 | 160 | CAIDA |
| AS44070 O2 Czech Republic, a.s. | 🇨🇿 CZ | 0 | 2 | 120 | CAIDA |
| AS49767 O2 Czech Republic, a.s. | 🇨🇿 CZ | 0 | 2 | 119 | CAIDA |
| AS197197 CETIN a.s. | 🇨🇿 CZ | 0 | 1 | 77 | CAIDA |
| AS202657 Pavel Jochim | 🇨🇿 CZ | 0 | 1 | 76 | CAIDA |
| AS207015 Position s.r.o. | 🇨🇿 CZ | 0 | 1 | 69 | CAIDA |
| AS47681 O2 Czech Republic, a.s. | 🇨🇿 CZ | 0 | 1 | 42 | CAIDA |
| AS39736 ICT Support, s.r.o. | 🇨🇿 CZ | 0 | 3 | 27 | inferred |
Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.