AS200454 Tomas Oliveira Valente Leite de Castro
AS200454 (TOM-AS) is registered to Tomas Oliveira Valente Leite de Castro in PT, through RIPE. It originates 5 prefixes in the global routing table.
2
IPv4 prefixes
3
IPv6 prefixes
512
IPv4 addresses
60%
RPKI valid
Registration
Who holds AS200454
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
AS number
AS200454
Handle
TOM-AS
Organization
Tomas Oliveira Valente Leite de Castro
Country
PT
Registry
RIPE
ASPA
None published
WHOIS recordRIPE
% This is the RIPE Database query service. % The objects are in RPSL format. % % The RIPE Database is subject to Terms and Conditions. % See https://docs.db.ripe.net/terms-conditions.html % Note: this output has been filtered. % To receive output for a database update, use the "-B" flag. % Information related to 'AS200352 - AS200535' as-block: AS200352 - AS200535 descr: RIPE NCC ASN block remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region. mnt-by: RIPE-NCC-HM-MNT created: 2026-04-08T13:28:00Z last-modified: 2026-04-08T13:28:00Z source: RIPE % Information related to 'AS200454' % Abuse contact for 'AS200454' is 'tomas.leite.castro@tecnico.ulisboa.pt' aut-num: AS200454 descr: Tomas Oliveira Valente Leite de Castro as-name: TOM-AS remarks: ---------------------------------------------------------------- remarks: Some things in life can never be fully appreciated nor remarks: understood unless experienced firsthand. Some things in remarks: networking can never be fully understood by someone who neither remarks: builds commercial networking equipment nor runs an operational remarks: network. remarks: ---------------------------------------------------------------- org: ORG-TOVL1-RIPE remarks: For full list of Communities available please visit https://bgp.tools/communities/200454 remarks: RPKI invalid routes are dropped remarks: +-------------------+ remarks: | Network Upstreams | remarks: +-------------------+ remarks: ------------------- Hurricane Electric LLC ------------------- mp-import: afi ipv4.unicast from AS6939 action pref=70; accept ANY mp-import: afi ipv6.unicast from AS6939 action pref=70; accept ANY mp-export: afi ipv4.unicast to AS6939 announce AS-LEGACY mp-export: afi ipv6.unicast to AS6939 announce AS-LEGACY remarks: ------------------- Cogent Communications -------------------- mp-import: afi ipv4.unicast from AS174 action pref=50; accept ANY mp-import: afi ipv6.unicast from AS174 action pref=50; accept ANY mp-export: afi ipv4.unicast to AS174 announce AS-LEGACY mp-export: afi ipv6.unicast to AS174 announce AS-LEGACY remarks: --------------------------- GVVME ---------------------------- mp-import: afi ipv4.unicast from AS12186 action pref=70; accept ANY mp-import: afi ipv6.unicast from AS12186 action pref=70; accept ANY mp-export: afi ipv4.unicast to AS12186 announce AS-LEGACY mp-export: afi ipv6.unicast to AS12186 announce AS-LEGACY remarks: --------------------------- EDGOO ---------------------------- mp-import: afi ipv4.unicast from AS47787 action pref=70; accept ANY mp-import: afi ipv6.unicast from AS47787 action pref=70; accept ANY mp-export: afi ipv4.unicast to AS47787 action community.append(0:1930, 12833:1930); announce AS-LEGACY mp-export: afi ipv6.unicast to AS47787 action community.append(0:1930, 12833:1930); announce AS-LEGACY remarks: +-------------------------+ remarks: | Peering - IX and others | remarks: +-------------------------+ remarks: ---------------------------- KCIX ---------------------------- mp-import: afi ipv4.unicast from AS40542 action pref=200; accept AS-KCIX-MEMBERS mp-import: afi ipv6.unicast from AS40542 action pref=200; accept AS-KCIX-MEMBERS mp-export: afi ipv4.unicast to AS40542 announce AS-LEGACY mp-export: afi ipv6.unicast to AS40542 announce AS-LEGACY remarks: --------------------------- LIS-IX --------------------------- mp-import: afi ipv4.unicast from AS33733 action pref=200; accept AS33733:AS-RSPEERS mp-import: afi ipv6.unicast from AS33733 action pref=200; accept AS33733:AS-RSPEERS mp-export: afi ipv4.unicast to AS33733 announce AS-LEGACY mp-export: afi ipv6.unicast to AS33733 announce AS-LEGACY remarks: ------------------------- Cloudflare ------------------------
Routing
What AS200454 announces
Prefixes originated by AS200454 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).
IPv4 prefixes
2
IPv6 prefixes
3
IPv4 addresses
512 (2 /24s)
RPKI valid
3 60%
RPKI invalid
0
RPKI not found
2
ROAs naming AS200454
7
With an IRR route object
4 80%
Prefixes
Announced prefixes
Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.
IPv4 (2)
IPv6 (3)
RPKI valid RPKI invalid no ROA covers it
Neighbors
Who AS200454 is reached through
The AS just before AS200454 in the paths our looking glass collectors hold, for 5 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.
IRR
Routing registry objects
From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.
| Source | as-name | Maintained by |
|---|---|---|
| RIPE | TOM-AS | RIPE-NCC-END-MNT, CASTRO-MNT |
Route objects with origin AS200454: ALTDB 11 · ARIN 9 · RIPE 1
as-sets that list AS200454 (15)