AS198605AVAST Software s.r.o.
CzechiaRegistryRIPE NCCTypeEyeballAs of 23rd October 2026, AS198605 (AVAST Software s.r.o.), an access network registered in Czechia with RIPE NCC, originates 21 IPv4 prefixes covering 6.1k addresses and 8 IPv6 prefixes. By IPv4 address space that makes it the 13,894th-largest of the 79,666 networks we see originating IPv4, and the 102nd-largest of 572 in Czechia. It is seen behind 4 upstream networks, most often AS3356 (Lumen (Level 3)) and AS29208 (Quantcom, a.s.), and in front of 1 downstream network. 90% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS198605 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS198605 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.
Neighbouring networks
12
adjacent networks
- Upstreams
- 433%
- Peers
- 758%
- Downstreams
- 18%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS3356Lumen (Level 3) |  US | Peer | 1,053 | 140 |
| AS29208Quantcom, a.s. | CZ | Peer | 830 | 139 |
| AS3257GTT Communications Inc. | US | Peer | 140 | 140 |
| AS5610O2 Czech Republic, a.s. | CZ | Peer | 98 | 98 |
Prefixes
All 29The largest blocks AS198605 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 5.62.36.0/23 | 512 | 77/77 |
| 5.62.60.0/23 | 512 | 77/77 |
| 69.94.74.0/23 | 512 | 77/77 |
| 5.45.58.0/24 | 256 | 77/77 |
| 5.45.59.0/24 | 256 | 77/77 |
| 5.62.54.0/24 | 256 | 77/77 |
| 37.156.187.0/24 | 256 | 77/77 |
| 69.94.64.0/24 | 256 | 77/77 |
| 69.94.70.0/24 | 256 | 77/77 |
| 69.94.71.0/24 | 256 | 77/77 |
Routing health
How AS198605's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.
RPKI origin validation
- Valid89.7%26
- Invalid0.0%0
- No ROA10.3%3
Propagation
- Globally propagated90% of full-feed peers or more100.0%29
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%0.0%0
Prefix sizes
IPv4 — 21 prefixes
IPv6 — 8 prefixes
- /4016.8M × /6450.0%4
- /45524k × /6412.5%1
- /4865.5k × /6437.5%3
Recent changes
Announcements that started or stopped since 23rd Sept 2026.
No announcement by AS198605 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.