AS197451 · CZ — VUTBR-AS Brno University of Technology

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VUTBR-AS Brno University of Technology · · CZ

Identity source

AS197451 ·

CZ VUTBR-AS Brno University of Technology

NRO allocation data

8IPv4 prefixes

4IPv6 prefixes

7Observed neighbors

RPKIValid: 8 Invalid: 0 Not found: 4 Unknown: 0

Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 11 Oct 00:00 UTC; routeviews2 11 Oct 02:00 UTC; routeviews6 11 Oct 02:00 UTC. Validator: 11 Oct 03:42 UTC. Publication-point issues: 89

Address space details

Overlapping originated prefixes counted once. IPv4 addresses: 67,072

IPv6 addresses: 1029970948388714847232770179072

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Observed originated prefixes

These are observed BGP origins, not an inventory of registered allocations or transit reachability.

12 matching prefix–origin pairs. Each pair appears once; source observations are in Details.

Prefix	RPKI	Last observed	Details
147.229.0.0/17	Valid	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
147.229.128.0/18	Valid	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
147.229.192.0/19	Valid	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
147.229.224.0/19	Valid	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
185.62.108.0/23	Valid	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
185.149.204.0/22	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
185.149.204.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
185.149.205.0/24	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found
2001:67c:1220::/46	Valid	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
2a03:2e0::/32	Valid	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
2a03:2e4::/30	Valid	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid routeviews6 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI valid
2a07:6bc0::/29	Not Found	11 Oct 02:00 UTC	2 source observations ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found routeviews6 · 2026-10-11T02:00:00+00:00 · 1 selected peers · RPKI not_found

Export observed prefixes: TXT · CSV · JSON

Observed AS neighbors

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.

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 02:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 02:00 UTC ris-rrc00 · IPv6 · 11 Oct 00:00 UTC routeviews6 · IPv6 · 11 Oct 02:00 UTC
AS15935 · CZ HA-VEL-LOCAL-AS ha-vel internet s.r.o.	IPv6	ris-rrc00, routeviews6	11 Oct 02:00 UTC	Source observations ris-rrc00 · IPv6 · 11 Oct 00:00 UTC routeviews6 · IPv6 · 11 Oct 02:00 UTC
AS16019 · CZ VODAFONE-CZ-AS Vodafone Czech Republic a.s.	IPv4	ris-rrc00, routeviews2	11 Oct 02:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 02:00 UTC
AS201263 · CZ AS-BRIX-CDN Brno University of Technology	IPv4, IPv6	ris-rrc00, routeviews2, routeviews6	11 Oct 02:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 02:00 UTC ris-rrc00 · IPv6 · 11 Oct 00:00 UTC routeviews6 · IPv6 · 11 Oct 02:00 UTC
AS201931 · CZ LBNET LBnet.cz s.r.o.	IPv6	ris-rrc00, routeviews6	11 Oct 02:00 UTC	Source observations ris-rrc00 · IPv6 · 11 Oct 00:00 UTC routeviews6 · IPv6 · 11 Oct 02:00 UTC
AS202872 · CZ KMENET KME, spol. s r. o.	IPv6	ris-rrc00, routeviews6	11 Oct 02:00 UTC	Source observations ris-rrc00 · IPv6 · 11 Oct 00:00 UTC routeviews6 · IPv6 · 11 Oct 02:00 UTC
AS210604 · CZ asczpernix-neza Pernix systems s.r.o.	IPv4	ris-rrc00, routeviews2	11 Oct 02:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 00:00 UTC routeviews2 · IPv4 · 11 Oct 02:00 UTC

Clear neighbor filters

View observed neighbor graph (up to 15 AS nodes)

Lines mean observed adjacency, with no commercial direction inferred. The table above provides the same evidence and source times.

Showing 7 of 7 matching neighbors, in table sort order, independent of table page.

Peering & locations

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Registry information

No cached registry response is available yet. Routing origins above are not a substitute for registry ownership.

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

NRO data and format

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
routeviews2	11 Oct 02:00 UTC	IPv4	8	140.192.8.16/IPv4
routeviews6	11 Oct 02:00 UTC	IPv6	4	2406:840:feed:2::1/IPv6
routeviews2	11 Oct 00:00 UTC	IPv4	8	140.192.8.16/IPv4
ris-rrc00	11 Oct 00:00 UTC	IPv6	4	2a00:5884::6/IPv6, 89.234.186.6/IPv4
routeviews6	11 Oct 00:00 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	10 Oct 16:00 UTC	IPv4	8	2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00	10 Oct 16:00 UTC	IPv6	4	2a00:5884::6/IPv6, 89.234.186.6/IPv4