AS197451·
CZ— Brno University of Technology
· Graph Explorer · View prefixes · Compare ASN · Export prefixes
VUTBR-AS · RIPE NCC · CZ
Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 11 Oct 08:00 UTC; routeviews2 11 Oct 08:00 UTC; routeviews6 11 Oct 08:00 UTC. Validator: 11 Oct 10:12 UTC. Publication-point issues: 89
Address space details
Overlapping originated prefixes counted once. IPv4 addresses: 67,072
IPv6 addresses: 1029970948388714847232770179072
Loading public source data…
Observed originated prefixes
These are observed BGP origins, not an inventory of registered allocations or transit reachability.
0 matching prefix–origin pairs. Each pair appears once; source observations are in Details.
No matching route was observed in the available dataset.
AS connectivity
7 unique neighbors in the selected local snapshots. This is the available collector dataset, not a complete map of the Internet. Adjacency does not establish upstream service or peering.
Interactive graph requires a larger screen. Please use a desktop browser.
Loading topology…
Network list
Sources & methodology
Inferred topology and tier estimates do not establish commercial agreements. AS hops count AS relationships, not routers or observed traffic paths. Arrows run from provider to customer; peer links have no arrows. Cross-links connect other included networks. IPv4 relationships guide the All layout; IPv6 differences remain in connection details. Cyclic relationships are marked separately. Size uses the global, logarithmic IPv4 CAIDA customer cone including the AS itself; IPv6 size data is unavailable.
7 matching neighbors · 1–7 shown
| Network | IPv4/IPv6 | Seen in | Last observed | Details |
|---|---|---|---|---|
AS2852 · CZ CESNET z.s.p.o. | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 08:00 UTC | Source observations
|
AS15935 · CZ HA-VEL-LOCAL-AS ha-vel internet s.r.o. | IPv6 | ris-rrc00, routeviews6 | 11 Oct 08:00 UTC | Source observations
|
AS16019 · CZ VODAFONE-CZ-AS Vodafone Czech Republic a.s. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 08:00 UTC | Source observations
|
AS201263 · CZ Brno University of Technology | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 08:00 UTC | Source observations
|
AS201931 · CZ LBNET LBnet.cz s.r.o. | IPv6 | ris-rrc00, routeviews6 | 11 Oct 08:00 UTC | Source observations
|
AS202872 · CZ KMENET KME, spol. s r. o. | IPv6 | ris-rrc00, routeviews6 | 11 Oct 08:00 UTC | Source observations
|
AS210604 · CZ asczpernix-neza Pernix systems s.r.o. | IPv4 | ris-rrc00, routeviews2 | 11 Oct 08:00 UTC | Source observations
|
Peering & locations
Loading public source data…
Registry information
RIPE NCC · fetched 11 Oct 03:57 UTC
- Resource name
- VUTBR-AS
- Handle
- AS197451
- RDAP country
- Not supplied
- ASN
- 197451
Registered organizations
Registration: 08 Dec 2010 11:00 UTC
Last Changed: 04 Sep 2018 10:56 UTC
Registry contacts and maintainers
- CA6319-RIPE · abuse, administrative, technical
- RIPE-NCC-END-MNT · registrant
- VUTBR-MNT · registrant
Allocation statistics
NRO/RIR delegated-extended records describe allocation or assignment ranges. They do not prove a BGP announcement or replace more-specific RDAP registration information. Country is the allocation record’s registration country, not the physical location of every address.
- AS197451–AS197451 · ripencc · assigned · ASN allocation country: CZ · Allocation date: 2010-12-08 — NRO/RIR data · snapshot 10 Oct 00:00 UTC
Prefix count history
Local observation changes
Only comparable successful snapshots are compared. First imports, changed peer coverage and collection gaps are baselines, not new global routes or withdrawals. RPKI transition history is not available before it has been recorded.
No retained changes are available for this resource.
Retained local prefix-count observations
Separate collector series. Missing rows are not zero. Peer-set changes are separate coverage, not a continuous trend.
| Source | Snapshot | Family | Prefixes | Peer coverage |
|---|---|---|---|---|
routeviews6 | 11 Oct 08:00 UTC | IPv6 | 4 | 2406:840:feed:2::1/IPv6 |
ris-rrc00 | 11 Oct 08:00 UTC | IPv4 | 8 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
ris-rrc00 | 11 Oct 08:00 UTC | IPv6 | 4 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
routeviews2 | 11 Oct 08:00 UTC | IPv4 | 8 | 140.192.8.16/IPv4 |
routeviews2 | 11 Oct 06:00 UTC | IPv4 | 8 | 140.192.8.16/IPv4 |
routeviews6 | 11 Oct 06:00 UTC | IPv6 | 4 | 2406:840:feed:2::1/IPv6 |
ris-rrc00 | 11 Oct 00:00 UTC | IPv4 | 8 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
ris-rrc00 | 11 Oct 00:00 UTC | IPv6 | 4 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |