AS200454 Tomas Oliveira Valente Leite de Castro

Portugal TOM-AS RIPE 2 IPv4 prefixes 3 IPv6 prefixes

IPv4 addresses

512

IPv6 /48 networks

258

RPKI

3 valid2 no ROA

Peers and downstreams

110

Holder

AS name: TOM-AS
Description: Tomas Oliveira Valente Leite de Castro
Organisation: Tomas Oliveira Valente Leite de Castro
Registered in: Lisbon, Portugal
Abuse contact: tomas.leite.castro@tecnico.ulisboa.pt
Assigned: 2022-12-18
Registered: 2022-12-19
Record last changed: 2025-10-03 03:13 UTC

131.143.87.0/24 23.147.168.0/24

AS42
AS835	GoCodeIT Inc GOCODEIT-EDGE
AS1003	andrewnet ANDREWNET
AS2495	Kansas Research and Education Network KANREN
AS2572	University of Missouri - dba the Missouri Research and Education Network (MOREnet) MORENET
AS2906	Netflix Streaming Services Inc. AS-SSI
AS3856	Packet Clearing House, Inc. PCH-AS
AS4150	SupraNet Communications, Inc. SUPRANET-WIS
AS5056	Aureon Network Services AUREON-5056
AS7488	CNServer LLC CNSERVER-AP-AS
AS8674	Netnod AB NETNOD-IX
AS10242	US Internet Corp USINTERNET
AS10310	Yahoo Holdings Inc. YAHOO-1
AS10750	Mark Twain Rural Telephone Co. MARK-TWAIN
AS11232	Midcontinent Communications MIDCO-NET
AS11320	LightEdge Solutions LIGHTEDGE-AS-02
AS11588	Lambda LAMBDA-BB
AS11597	Mw-Kansas MW-KANSAS
AS11708	City of North Kansas City, MO LINKCITY
AS12186	GVVME
AS12198	JSMSR Network JSMSR-LLC
AS13329	Kansas Fiber Network, LLC KFN-001
AS13335	Cloudflare, Inc. CLOUDFLARENET
AS13807	Great Plains Communications LLC GREAT-PLAINS-COMMUNICATIONS
AS14061	DigitalOcean, LLC DIGITALOCEAN-ASN
AS14371	Paul Bunyan Communications PBNET
AS14593	Space Exploration Technologies Corporation SPACEX-STARLINK
AS15164	Unite Private Networks LLC. UPNLLC
AS15165	Mutual Telephone Company MTC-LRCOMMUNICATIONS
AS16909	imput IMPUT
AS17303	Disaster Networks, LLC NETWORK-ADVISORS
AS18451	LES.NET LESNET
AS20473	The Constant Company, LLC AS-VULTR
AS21737	SpringNet SPRINGNET2-NET
AS21738	Rozint ROZINT
AS22295	Advin Services LLC ADVIN
AS23404	Ritter Communications RITTERNET
AS23428	ServerForge LLC SERVERFORGE
AS25735	Sloth Networks SLOTH-NET
AS26156	Verus, LLC VERUS
AS26415	VeriSign Global Registry Services VERISIGN-INC
AS26457	nonexiste.net NONEXISTE-AS
AS27425	IdeaTek Telcom, LLC ASN-IDK-27425
AS27523	Kawaii Networks LLC KAWAII-NETWORKS
AS30174	United Telephone Association, Inc. UTA
AS30690	Kazehana Networks LLC KAZEHANA-NETWORKS
AS32002	RackGenius RACKGENIUS
AS32030	VoIPster Communications, INC. VOIPSTER
AS32097	WholeSale Internet, Inc. WII
AS32943	Web of Nevada WEB-OF-NEVADA-01
AS34927	iFog GmbH iFog-GmbH
AS36236	NetActuate, Inc NETACTUATE
AS40138	Mach Dilemma, LLC MDNET
AS40536	PixelDeck Hosting, LLC PIXELDECK
AS40663	IncogNet LLC INTERNET-SPEECH-AND-PRIVACY-LLC
AS40916	Evalse, LLC EVALSE
AS44324	MoeDove LLC MOEDOVE-AS
AS44354	BROCK VOJKOVIC BROCK
AS44421	Eve-Net EVE-NET
AS46515	Toons of the World Foundation TOONTOWN
AS46824	NameCrane LLC NAMECRANE
AS50666	LigaT Telecom Sociedade Unipessoal LDA LIGAT
AS50763	Robert McKay MCKAYCOM
AS52025	ParadoxNetworks Limited PARADOXNETWORKS-LIMITED
AS52210	Accuris Technologies Ltd. ACCURIS-TECHNOLOGIES
AS53343	sc Network SCN
AS53356	Free Range Cloud Hosting Inc. FREE RANGE CLOUD
AS53597	Hoyos Consulting LLC HOYOS-CONSULTING-LLC
AS53610	Metro Communications Company, Inc. METRO-COMMUNICATIONS-COMPANY
AS54113	Fastly, Inc. FASTLY
AS54148	Dynamic Quantum Networks DYNAMIC-QUANTUM-NETWORKS
AS54566	Servikus LLC SERVIKUS
AS60326	0xDEADBEEF LTD DEADBEEF-AS
AS63066	7Hoop Network Telecom, LLC 7HOOPNETWORK
AS64289	Macarne.com MACARNE
AS134094	Serverfield Co., Ltd. SERVERFIELD-AS
AS150289	Sun Yanzheng SUNYZ-AS-AP
AS200242	de-theirs
AS202562	Aperture-Networks APERTURE-NETWORKS
AS203729	igloo22225
AS205018	Irsyad Khoirul Anwar IRSYAD-AS-ID
AS206924	Ben Cartwright-Cox BENJOJONET
AS210645	DOMINIK DOBROWOLSKI Dominik_Dobrowolski
AS210667	Smishcraft SMISHCRAFT
AS214022	Joseph Rawlings trading as Virtnet.bond VIRTNET
AS214329	BGP Network LLC BGP-Network
AS214344	Hanxun Xu Hanxun-Xu
AS214806	Femboy Cyber Networks LLC FEMBOY
AS215172	JIANYUELAB LTD JIANYUELAB-AS
AS215248	Bastiaan Mathijs Brink BastiaanBrink
AS216096	Alex Terrats Ciberseguretat SLU SECUREPEAK
AS216107	Noah van der Aa trading as Frumentum Media FRUMENTUM
AS328112	Linux Based Systems Design SA (Pty) Ltd
AS393577	Tritan Development TRITAN-DEVELOPMENT
AS393796	Gbta-Asn GBTA-ASN
AS395662	OzarksGo, LLC OZARKSGO
AS397732	Net Vision Communications, LLC NETVISION
AS399503	Dice Carrier Services LLC AMERICOM
AS399647	Rumble USA Inc. RUMBLE
AS399898	Conexon Connect CONEXON-CONNECT
AS400146	DIAMOND STATE NETWORKS, LLC DIAMOND-STATE-NETWORKS
AS400226	StormyCloud Inc STORMYCLOUDINC
AS400818	Ausra LLC AUSRA-SYSTEMS
AS401130	SaturnDotDev SATURN-ASN-01
AS401332	Triplebit TRIPLEBIT
AS401401	Unredacted Inc UNREDACTED-NOISENET
AS401538	Nova86 NOVA86
AS401988	5005 LLC AS5005

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade B · 75/100

partly	Prefixes covered by valid ROAs 3 of 5 announced prefixes are RPKI valid, 2 have no ROA.	15/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 3 IPv6 prefixes.	15/15
partly	More than one upstream 1 upstream seen in BGP.	5/10
pass	Working abuse contact tomas.leite.castro@tecnico.ulisboa.pt is published.	15/15
fail	Publishes a geofeed No geofeed found. Without one, location databases have to guess.	0/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
pass	Registry record maintained Last changed 2025-10-03.	5/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/200454"><img src="https://ip-fd.net/badge/asn/200454/health.svg" alt="AS200454 network health on IP-FD.net"></a>

Markdown

[![AS200454 network health](https://ip-fd.net/badge/asn/200454/health.svg)](https://ip-fd.net/asn/200454)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 10:39 UTC	Neighbour gone	AS207268	peer
2026-10-04 10:39 UTC	Neighbour gone	AS11317	peer
2026-10-04 10:39 UTC	New neighbour	AS401401	peer
2026-10-04 10:39 UTC	New neighbour	AS32002	peer
2026-10-04 10:39 UTC	New neighbour	AS216096	peer
2026-10-04 10:39 UTC	New neighbour	AS20473	peer
2026-10-04 10:39 UTC	Relationship changed	AS50666	upstream to peer
2026-10-04 10:39 UTC	Relationship changed	AS12186	upstream to peer
2026-10-04 10:39 UTC	Prefix gone	2602:faa5::/36
2026-10-04 10:39 UTC	Prefix gone	2602:faa5::/32
2026-10-04 10:39 UTC	Prefix gone	208.85.8.0/23
2026-10-04 10:39 UTC	Prefix gone	199.16.240.0/22

WHOIS

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 -------------------
remarks:        ------------------- Cogent Communications --------------------
remarks:        --------------------------- GVVME ----------------------------
remarks:        --------------------------- EDGOO ----------------------------
remarks:        +-------------------------+
remarks:        | Peering - IX and others |
remarks:        +-------------------------+
remarks:        ---------------------------- KCIX ----------------------------
remarks:        --------------------------- LIS-IX ---------------------------
remarks:        ------------------------- Cloudflare -------------------------
remarks:        -------------------------- AUSRA LLC -------------------------
remarks:        +-------------+
remarks:        | Downstreams |
remarks:        +-------------+
remarks:        --------------------------AS214913 ---------------------------
remarks:        ------------------------ RIPE K-ROOT -------------------------
remarks:        ------------------------ Sílvio Silva ------------------------
remarks:        --------------------------- AS112 ----------------------------
remarks:        +---------------------------------------------------+
remarks:        | Abuse issues please contact abuse@leitecastro.com |
remarks:        +---------------------------------------------------+
sponsoring-org: ORG-FUL13-RIPE
admin-c:        ACRO49236-RIPE
tech-c:         ACRO49236-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         CASTRO-MNT
created:        2022-12-19T10:39:52Z
last-modified:  2025-10-03T03:13:16Z
source:         RIPE
% 48 routing policy lines (import/export) not shown

Routing data

Updated just now

Registry record

Fetched just now from RIPE

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/200454

const res = await fetch('https://ip-fd.net/api/v1/asn/200454', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/200454', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/200454');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/200454", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Works without a key at a lower rate. Get a free key.

AS19577	CASTRO TELECOM LLC CASTRO-TELECOM
AS33733	CASTRO TELECOM LLC CASTRO-TELECOM