If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	23.147.168.0/24	CASTRO TELECOM LLC
	131.143.87.0/24	CASTRO TELECOM LLC
	2602:faa5::/36	CASTRO TELECOM LLC
	2a0a:6040:aa00::/40	Tomas Oliveira Valente Leite de Castro
	2a0f:b241:10::/48	-

---

Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS12186	GVVME	✔	✘
	AS6939	Hurricane Electric LLC	✘	✔

---

Peers

	ASN	Description	IPv4	IPv6
	AS6939	Hurricane Electric LLC	✔	✔
	AS12186	GVVME	✔	✔
	AS13335	Cloudflare, Inc.	✔	✔
	AS19577	CASTRO TELECOM LLC	✔	✔
	AS11492	CABLE ONE, INC.	✔	✘
	AS396998	Path Network, Inc.	✔	✔
	AS5056	Aureon Network Services	✔	✔
	AS393577	Tritan Development	✔	✔
	AS10310	Yahoo Holdings Inc.	✔	✔
	AS23404	Ritter Communications	✔	✔
	AS14593	SpaceX Starlink	✔	✔
	AS32097	WholeSale Internet, Inc.	✔	✔
	AS42	WoodyNet, Inc.	✔	✔
	AS2572	Missouri Research and Education Network (MOREnet)	✔	✔
	AS27425	IdeaTek Telcom, LLC	✔	✔
	AS52025	ParadoxNetworks Limited	✔	✔
	AS213605	Liu HaoRan	✘	✔
	AS11317	Great Plains Network	✔	✔
	AS64289	Macarne.com	✔	✔
	AS11232	Midcontinent Communications	✔	✔
	AS44324	MoeDove LLC	✔	✔
	AS399898	Conexon Connect	✔	✔
	AS36236	NetActuate, Inc	✔	✔
	AS2495	Kansas Research and Education Network	✔	✔
	AS214022	Joseph Rawlings trading as Virtnet.bond	✔	✔
	AS40581	Arkansas Research and Education Optical Network	✔	✔
	AS2906	Netflix Streaming Services Inc.	✔	✔
	AS63066	7Hoop Network Telecom, LLC	✔	✔
	AS21738	Rozint	✔	✔
	AS53610	Metro Communications Company, Inc.	✔	✔
	AS33616	Co-Mo Comm Inc	✔	✔
	AS54579	Chariton Valley Telephone Corporation	✔	✘
	AS216107	Noah van der Aa trading as Frumentum Media	✔	✔
	AS11320	LightEdge Solutions	✔	✔
	AS399647	Rumble USA Inc.	✔	✔
	AS8560	IONOS SE	✔	✘
	AS13767	DataBank Holdings, Ltd.	✔	✘
	AS62943	Missouri Network Alliance, LLC	✔	✘
	AS400818	Ausra LLC	✔	✔
	AS14363	MTC Communications, Inc.	✔	✘
	AS21737	SpringNet	✔	✔
	AS40536	PixelDeck Hosting, LLC	✔	✔
	AS52210	Accuris Technologies Ltd.	✔	✔
	AS210667	Adam Goodenough	✔	✔
	AS27523	Kawaii Networks LLC	✔	✔
	AS54148	Dynamic Quantum Networks	✔	✔
	AS12198	JSMSR Network	✘	✔
	AS53597	Hoyos Consulting LLC	✔	✔
	AS34927	iFog GmbH	✔	✔
	AS10242	US Internet Corp	✔	✔
	AS200242	Ember Ana	✔	✔
	AS23428	ServerForge LLC	✔	✔
	AS400146	DIAMOND STATE NETWORKS, LLC	✘	✔
	AS215248	Bastiaan Mathijs Brink	✔	✔
	AS397244	Tackitt, Inc.	✔	✔
	AS54113	Fastly, Inc.	✔	✔
	AS16909	imput	✔	✔
	AS18451	LES.NET	✔	✔
	AS401538	Nova86	✔	✔
	AS150289	Sun Yanzheng	✘	✔
	AS393442	United Electric Cooperative	✔	✘
	AS30690	Kazehana Networks LLC	✔	✔
	AS13329	Kansas Fiber Network, LLC	✘	✔
	AS32030	VoIPster Communications, INC.	✔	✔
	AS40916	Evalse, LLC	✔	✔
	AS395662	OzarksGo, LLC	✔	✔
	AS22295	Advin Services LLC	✔	✔
	AS5078	Oklahoma Network for Education Enrichment and	✔	✘
	AS46733	x6c	✔	✔
	AS207268	STRATEGIC EXPLORATIONS LTD	✘	✔
	AS202562	Roelf Wichertjes	✔	✔
	AS55140	Sho Me Technologies, LLC	✔	✘
	AS8674	Netnod AB	✔	✔
	AS11597	Mercury Broadband	✔	✔
	AS401332	Triplebit	✔	✔
	AS1003	andrewnet	✔	✔
	AS10750	Mark Twain Rural Telephone Co.	✔	✔
	AS17303	Disaster Networks, LLC	✔	✔
	AS32943	Web of Nevada	✔	✔
	AS44354	BROCK VOJKOVIC	✘	✔
	AS26457	nonexiste.net	✔	✔
	AS53703	KwiKom Communications	✔	✘
	AS25735	Sloth Networks	✔	✔
	AS206924	Ben Cartwright-Cox	✔	✔
	AS60326	0xDEADBEEF LTD	✔	✔
	AS16604	HUNTEL.NET	✔	✘
	AS835	GoCodeIT Inc	✔	✔
	AS53343	Ntrix Infrastructure	✔	✔
	AS400226	StormyCloud Inc	✔	✔
	AS46824	NameCrane LLC	✔	✔
	AS20940	Akamai International B.V.	✔	✘
	AS151349	Yuki Network Ltd	✔	✔
	AS203729	June Slater	✔	✔
	AS44421	Yifu Yu	✘	✔
	AS399503	Dice Carrier Services LLC	✔	✔
	AS397732	Net Vision Communications, LLC	✔	✔
	AS13737	Interconnecx, LLC	✔	✘
	AS216096	Alex Terrats Ciberseguretat SLU	✘	✔
	AS57695	Misaka Network, Inc.	✔	✘
	AS63293	Meta (CDN Network)	✔	✔
	AS54566	Servikus LLC	✔	✔
	AS35777	LTN Global Communications Inc	✔	✔
	AS40663	IncogNet LLC	✔	✔
	AS3856	Packet Clearing House, Inc.	✔	✔
	AS53356	Free Range Cloud Hosting Inc.	✔	✔
	AS134094	Serverfield Co., Ltd.	✔	✔
	AS199767	Pinjia Zhao	✘	✔
	AS40350	Key Cooperative	✔	✘
	AS7201	Network Edge LLC	✔	✘
	AS399924	All Neins LLC	✔	✔
	AS214329	BGP Network LLC	✔	✔
	AS205018	Irsyad Khoirul Anwar	✘	✔
	AS212895	Johannes Ernst	✘	✔
	AS14371	Paul Bunyan Communications	✘	✔
	AS40138	Mach Dilemma, LLC	✘	✔
	AS11169	Arquenzo LLC	✘	✔
	AS4150	SupraNet Communications, Inc.	✘	✔
	AS54994	Meteverse Limited	✔	✘
	AS30174	United Telephone Association, Inc.	✘	✔
	AS11708	City of North Kansas City, MO	✘	✔
	AS46515	Toons of the World Foundation	✘	✔
	AS328112	Linux Based Systems Design SA (Pty) Ltd	✘	✔
	AS15164	Unite Private Networks LLC.	✘	✔
	AS393796	Golden Belt Telephone	✘	✔
	AS26156	Verus, LLC	✘	✔
	AS7488	CNServer LLC	✘	✔
	AS13807	Great Plains Communications LLC	✘	✔
	AS397326	South Front Networks	✔	✘

---

Downstreams

	ASN	Description	IPv4	IPv6
	AS19577	CASTRO TELECOM LLC	✔	✔

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 -------------------------
mp-import:      afi ipv4.unicast from AS13335 action pref=400; accept AS-CLOUDFLARE
mp-import:      afi ipv6.unicast from AS13335 action pref=400; accept AS-CLOUDFLARE
mp-export:      afi ipv4.unicast to AS13335 announce AS-LEGACY
mp-export:      afi ipv6.unicast to AS13335 announce AS-LEGACY
remarks:        -------------------------- AUSRA LLC -------------------------
mp-import:      afi ipv4.unicast from AS400818 action pref=400; accept AS-AUSRA
mp-import:      afi ipv6.unicast from AS400818 action pref=400; accept AS-AUSRA
mp-export:      afi ipv4.unicast to AS400818 announce AS-LEGACY
mp-export:      afi ipv6.unicast to AS400818 announce AS-LEGACY
remarks:        +-------------+
remarks:        | Downstreams |
remarks:        +-------------+
remarks:        --------------------------AS214913 ---------------------------
mp-import:      afi ipv4.unicast from AS214913 action pref=400; accept AS214913
mp-import:      afi ipv6.unicast from AS214913 action pref=400; accept AS214913
mp-export:      afi ipv4.unicast to AS214913 announce ANY
mp-export:      afi ipv6.unicast to AS214913 announce ANY
remarks:        ------------------------ RIPE K-ROOT -------------------------
mp-import:      afi ipv4.unicast from AS25152 action pref=400; accept RS-KROOT
mp-import:      afi ipv6.unicast from AS25152 action pref=400; accept RS-KROOT-V6
mp-export:      afi ipv4.unicast to AS25152 announce ANY
mp-export:      afi ipv6.unicast to AS25152 announce ANY
remarks:        ------------------------ Sílvio Silva ------------------------
mp-import:      afi ipv4.unicast from AS215153 accept AS215153:AS-CONE
mp-import:      afi ipv6.unicast from AS215153 accept AS215153:AS-CONE
mp-export:      afi ipv4.unicast to AS215153 announce ANY
mp-export:      afi ipv6.unicast to AS215153 announce ANY
remarks:        --------------------------- AS112 ----------------------------
mp-import:      afi ipv4.unicast from AS112 accept AS112
mp-import:      afi ipv6.unicast from AS112 accept AS112
mp-export:      afi ipv4.unicast to AS112 announce ANY
mp-export:      afi ipv6.unicast to AS112 announce ANY
remarks:        +---------------------------------------------------+
remarks:        | Abuse issues please contact abuse@leitecastro.com |
remarks:        +---------------------------------------------------+
sponsoring-org: ORG-FUL13-RIPE
notify:         tomas@leitecastro.com
admin-c:        DUMY-RIPE
tech-c:         DUMY-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
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************


organisation:   ORG-TOVL1-RIPE
org-name:       Tomas Oliveira Valente Leite de Castro
country:        PT
org-type:       OTHER
address:        Dummy address for ORG-TOVL1-RIPE
# Email removed, Log into bgp.tools to see whois emails/phone numbers
abuse-c:        ACRO49236-RIPE
mnt-ref:        FEMBOY-MNT
mnt-ref:        CLOUDIE-MNT
mnt-ref:        ROUTE48-MNT
mnt-by:         CASTRO-MNT
created:        2022-07-26T13:57:43Z
last-modified:  2026-04-29T05:56:33Z
source:         RIPE
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************

Last Update: 2026-05-06T03:24:15Z UTC

---

Member of the following AS-SETs

-	Member
RIPE	as-legacy
ARIN	as-legacy
JPIRR	as-bbix-t-v6
ALTDB	as-castro
RIPE	as-leitecastro
RIPE	as213886:as-upstreams
RADB	as-hurricanev6
RADB	as-bbix-t-v6
RIPE	as-ifog
RIPE	as-portugal
ALTDB	as-legacy
RIPE	as-tomas
RIPE	as-lnd
ARIN	as-castro
RIPE	as200952:as-peers
RIPE	as-ris-rrc25
ALTDB	as-ifog
RIPE	as-ipv6
RIPE	as-pt
RIPE	as-castro
RIPE	as-transroute-spec