AS56665 Proximus Luxembourg S.A.

Luxembourg TANGO-PROXIMUS_NXT RIPE 25 IPv4 prefixes 9 IPv6 prefixes

IPv4 addresses

45,056

IPv6 /48 networks

528,387

RPKI

34 valid0 no ROA

Peers and downstreams

206

Holder

AS name: TANGO-PROXIMUS_NXT
Description: Proximus Luxembourg S.A.
Organisation: Proximus Luxembourg S.A.
Abuse contact: abuse@proximus.lu
Assigned: 2011-04-20
Registered: 2011-04-21
Record last changed: 2026-01-26 13:14 UTC

AS553	Belwue BELWUE
AS559	SWITCH Switch
AS680	Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. DFN
AS1103	SURF B.V. SURFNET-NL
AS1140	Stichting Internet Domeinregistratie Nederland SIDN
AS1267	WIND TRE S.P.A. ASN-WINDTRE
AS1764	Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH NEXTLAYER-AS
AS1828	Unitas Global UNITAS
AS1836	green.ch AG GREEN
AS2027	MilkyWan Association MilkyWan
AS3170	VeloxServ Communications Ltd VELOXSERV
AS3204	xTom OU XTOM-V-PS
AS3212	Telemach Slovenija d.o.o. TELEMACH
AS3214	xTom GmbH XTOM
AS3303	Swisscom (Schweiz) AG SWISSCOM
AS3333	Reseaux IP Europeens Network Coordination Centre (RIPE NCC) RIPE-NCC-AS
AS3573	Accenture LLP ACCENTURE
AS3741	Dimension Data
AS4230	CLARO S.A. AS4230
AS4455	IX Reach Ltd BSO
AS4637	Telstra Global ASN-TELSTRA-GLOBAL
AS5394	UNIDATA S.p.A. Unidata
AS5405	Inter.link GmbH INTERDOTLINK
AS6057	Administracion Nacional de Telecomunicaciones AS6057
AS6204	TMRC GROUP SRL ZET-NET
AS6424	EDGOO NETWORKS UNIPESSOAL LDA EDGOO
AS6461	Zayo Bandwidth ZAYO-6461
AS6663	Euroweb Romania S.R.L. TTI-NET
AS6667	Elisa Oyj EUNET-FINLAND
AS6758	Monaco Telecom S.A. AS6758
AS6777	Amsterdam Internet Exchange B.V. AMS-IX-RS
AS6797	GlobalConnect AB GLOBALCONNECT-NET
AS6894	KDDI Europe Ltd KDDI-EUROPE
AS6910	DIGI ROMANIA S.A. DIGI-BORDER
AS7195	EDGEUNO S.A.S AS7195
AS8218	Zayo Infrastructure France SA NEO-ASN
AS8298	IPng Networks GmbH IPNG
AS8426	Claranet Limited CLARANET-AS
AS8455	atom86 BV ATOM86-AS
AS8529	Zain Omantel International FZ-LLC OMANTEL-AS
AS8708	DIGI ROMANIA S.A. DIGI-RO
AS8758	Iway AG IWAY
AS8888	xTom Pty Ltd XTOM
AS9002	RETN Limited RETN-AS
AS9009	M247 Europe SRL M247
AS9044	BSE Software GmbH SOLNET
AS12577	MMC GmbH MMC-AT-AS
AS12637	SEEWEB s.r.l. SEEWEB
AS12779	IT.Gate S.p.A. ITGATE
AS12859	BIT BV NL-BIT
AS12969	Ljosleidarinn ehf Vodafone_Iceland
AS13030	Init7 (Switzerland) Ltd. INIT7
AS13237	euNetworks GmbH LAMBDANET-AS
AS14630	Invesco Group Services, Inc. INVESCO
AS14840	BR.Digital Telecom AS14840
AS14907	Wikimedia Foundation Inc. WIKIMEDIA
AS15547	netplus.ch SA NETPLUS
AS15576	NTS workspace AG NTS
AS15605	Connesi s.p.a. CONNESI
AS15802	Emirates Integrated Telecommunications Company PJSC DU-AS1
AS16347	ADISTA SAS INHERENT
AS17557	Pakistan Telecommunication Company Limited PKTELECOM-AS-PK
AS17639	Converge ICT Solutions Inc. CONVERGE-AS
AS18106	Viewqwest Pte Ltd VIEWQWEST-SG-AP
AS20485	Joint Stock Company TransTeleCom TRANSTELECOM
AS20764	CJSC RASCOM RASCOM-AS
AS20766	Association "Gitoyen" GITOYEN-MAIN-AS
AS20932	Services Industriels de Geneve SIG-ST
AS21179	Logwin AG Logwin-AS
AS21320	GEANT Vereniging GEANT_IAS_VRF
AS21412	UAB "Cgates" CGATES-AS
AS24482	SG.GS SGGS-AS-AP
AS24889	Monzoon Networks AG MONZOON-AS
AS24961	WIIT AG MYLOC-AS
AS25091	IP-Max SA IP-Max
AS25094	Centre des technologies de l'information de l'Etat CTIE
AS25160	Vorboss Limited VORBOSS
AS25220	equada network GmbH GLOBALNOC-AS
AS25367	Proximus Luxembourg S.A. AS-ADTS-LU
AS28716	Retelit Digital Services S.p.A. RETELIT-AS
AS28792	Public Internet Ltd PUBLIC-INTERNET
AS28917	Fiord Networks, UAB Fiord-AS
AS29075	IELO-LIAZO SERVICES SAS IELO
AS29140	Hostserver GmbH HOSTSERVER-AS
AS29208	Quantcom, a.s. QUANTCOM-AS
AS29632	Netassist International EOOD NASSIST-AS
AS29691	Nine Internet Solutions AG NINE
AS31122	Digiweb ltd DIGIWEB-AS
AS31510	Innsbrucker Kommunalbetriebe AG IKB-AS
AS31742	Sota Solutions Ltd. SOTACONNECT
AS34019	Hivane Association HIVANE
AS34177	Celeste SAS CELESTE-AS
AS34288	Kantonsschule Zug AS34288
AS34549	meerfarbig GmbH & Co. KG MEER-AS
AS34927	iFog GmbH iFog-GmbH
AS35266	EX Networks Limited EXN-AS
AS35280	F5 Networks SARL F5
AS35360	Gargunet GARGUNET
AS35426	NXT Initiative SAS NEXTMAP
AS35598	INETCOM CARRIER LLC INETCOM
AS35600	Vedege SAS ASN-VEDEGE
AS35710	weber.digital GmbH WEBERCLOUD
AS36236	NetActuate, Inc NETACTUATE
AS37282	Main one Cable Company Nigeria Limited
AS37497	Network Platforms (PTY) LTD
AS37680	Cool Ideas Service Provider (Pty) Ltd
AS37721	Virtual Technologies & Solutions
AS39122	Blacknight Internet Solutions Limited BLACKNIGHT-AS
AS39249	Netassist International EOOD KICUA-AS
AS39351	31173 Services AB ESAB-AS
AS41327	Fiber Telecom S.p.A. FIBERTELECOM-AS
AS41666	Institute for Pyrotechnical Cleaning (limited company) PYRO-AS
AS42473	Anexia Cloud Solutions GmbH AS-ANEXIA
AS42541	Fiberby ApS FIBERBY
AS44097	CLEMENT CAVADORE AUTONOMOUS-CLOSET
AS44708	PAUL WURTH S.A. PAULWURTH-AS
AS44901	Belcloud LTD belcloud
AS45049	Wan4you WAN4YOU
AS45489	Sri Lanka Telecom PLC, GLobal Peering SLT-GLOBAL
AS47147	Anexia Cloud Solutions GmbH AS-ANX
AS47692	Nessus GmbH NESSUS
AS48070	DSM (GB) Limited DSM
AS48185	team.blue NV team_blue
AS48237	Etihad Etisalat, a joint stock company MOBILY-AS
AS48362	Tkswf TKSWF-AS
AS48646	SDRmedia Verwaltungs GmbH STEFAN6
AS48919	UACITY Ltd. UA-CITY-AS
AS49434	FBW NETWORKS SAS FBWNETWORKS
AS49544	i3D.net B.V i3Dnet
AS49559	A-Systems Sp. z o.o. IPT-1-IX
AS49605	Digital Telecommunication Services S.r.l. DTS-AS
AS50300	CustodianDC Limited CUSTDC
AS50304	Blix Solutions AS BLIX
AS50628	Leonix Telecom SAS Leonix-Telecom
AS50629	LWLcom GmbH LWLCOM
AS50673	Serverius Holding B.V. Serverius-as
AS50763	Robert McKay MCKAYCOM
AS51154	pCloud AG pCloud
AS51184	Fonira Telekom GmbH FONIRA
AS51185	MainStreaming SpA MAINSTREAMING-AS
AS51873	Arcade Solutions AG AS-ARCADE
AS56655	Gigahost AS GIGAHOST
AS56662	Eutpnet EUTPNET
AS56911	Warian S.R.L. ASN-WARIAN
AS56987	ABACLOUDA SAS AS-ABACLOUDA
AS57777	Jeroen Massar MASSAR
AS57965	International Committe of the Red Cross (ICRC) ICRC-LUM
AS58057	Securebit AG SECUREBIT
AS58299	Openfactory GmbH OPENFACTORY-AS
AS58308	Cusae SAS CUSAE-AS
AS60068	Datacamp Limited CDN77
AS60171	AFR-IX TELECOM S.A. AFRIX-AS
AS61573	IP TELECOM AS61573
AS62167	Tismi BV Tismi
AS64475	Freifunk Frankfurt am Main e.V. FREIFUNK-FRANKFURT
AS137409	GSL Networks Pty LTD GSLNETWORKS-AS-AP
AS142271	EWS DS Networks Inc DOUBLESQUARE-AS-AP
AS198150	SIACOM JSC SIACOM-AS
AS198249	Ops One AG OPSONE
AS198385	AlpineDC SA AlpineDC
AS199245	PricewaterhouseCoopers Societe cooperative PWCLU
AS199524	G-Core Labs S.A. GCORE
AS199938	Netzwerge GmbH NETZWERGE
AS202438	Encevo S.A encevo
AS203143	Banque et Caisse d'Epargne de l'Etat Luxembourg BCEE-LU
AS204299	KPMG Audit S.a r.l. KPMG-LU
AS205112	PHILUNET GmbH PHILUNET
AS205206	Netsite A/S Netsite
AS206356	Freifunk Essen e.V. Freifunk-Essen
AS207841	Inferno Communications Ltd INFERNO
AS208406	BANK DEGROOF PETERCAM SA ASBDP
AS209022	Tschajera Limited Tschajera-Limited
AS209823	Enki Multimedia EURL ENKI-AS
AS210834	LU-CIX Management G.I.E. LU-CIX-IT
AS210937	Showfom
AS211999	LuxProvide S.A. LuxProvide
AS212024	Risson RISSON
AS212483	LEVEL EIGHTY-SIX COMMUNICATIONS LTD level86
AS212630	Societe de l'aeroport de Luxembourg SA AS_LUXAIRPORT
AS212635	Jurrian van Iersel AS212635
AS213151	Christian Elsen CHRISELSEN
AS213241	TECHIT.BE SRL TECHIT
AS213785	Banque Internationale a Luxembourg SA BIL-LU
AS263152	MIGO TELECOM AS263152
AS264409	Huge Solucoes Corporativas Ltda AS264409
AS264479	Turbozone Internet AS264479
AS271253	LINK BRASIL TELECOMUNICACOES LTDA AS271253

Routing changes

Last 30 days

2026-10-04 05:48 UTC	Neighbour gone	AS205103	upstream
2026-10-04 05:48 UTC	Neighbour gone	AS52320	peer
2026-10-04 05:48 UTC	Neighbour gone	AS31027	peer
2026-10-04 05:48 UTC	Neighbour gone	AS8434	upstream
2026-10-04 05:48 UTC	New neighbour	AS8888	peer
2026-10-04 05:48 UTC	New neighbour	AS264479	peer
2026-10-04 05:48 UTC	Relationship changed	AS9044	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS9009	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS9002	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS8758	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS8708	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS8298	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS7195	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS6910	upstream to peer
2026-10-04 05:48 UTC	New neighbour	AS6797	peer
2026-10-04 05:48 UTC	Relationship changed	AS6777	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS6758	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS6663	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS6461	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS6204	upstream to peer
2026-10-04 05:48 UTC	New neighbour	AS6057	peer
2026-10-04 05:48 UTC	Relationship changed	AS60171	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS60068	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS56911	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS56655	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS5405	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS50673	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS50304	upstream to peer
2026-10-04 05:48 UTC	New neighbour	AS49559	peer
2026-10-04 05:48 UTC	Relationship changed	AS48646	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS48362	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS4637	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS4455	upstream to peer
2026-10-04 05:48 UTC	New neighbour	AS4230	peer
2026-10-04 05:48 UTC	Relationship changed	AS41327	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS39351	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS39249	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS37497	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS3741	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS37282	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS34549	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS34177	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS34019	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS3303	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS3204	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS29691	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS29632	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS29208	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS29075	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS28716	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS264409	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS24961	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS24889	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS21320	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS212024	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS209022	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS20766	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS20764	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS20485	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS1836	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS1764	upstream to peer
2026-10-04 05:48 UTC	New neighbour	AS17557	peer
2026-10-04 05:48 UTC	Relationship changed	AS15802	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS15576	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS14840	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS137409	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS13030	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS12779	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS1267	upstream to peer
2026-10-04 05:48 UTC	Relationship changed	AS12577	upstream to peer
2026-10-04 05:48 UTC	New prefix	78.111.137.0/24

WHOIS

aut-num:        AS56665
as-name:        TANGO-PROXIMUS_NXT
org:            ORG-TMS6-RIPE
remarks:        --------------------------------------------------
remarks:        BGP Communities for Customers
remarks:        56665:9999 - Blackholing
remarks:        All other communities on request
remarks:        --------------------------------------------------
remarks:        
remarks:        ----------------- Upstream IPv4 ------------------
remarks:        
remarks:        ----------------- Upstream IPv6 ------------------
remarks:        
remarks:        ------------------- Peerings ---------------------
remarks:        
remarks:        +------------- Peering Details ------------------+
remarks:        All our peering details can be found at
remarks:        http://as56665.peeringdb.com
remarks:        +------------------------------------------------+
remarks:        
remarks:        ------------------- PNIs IPv4 ----------------------
remarks:        
remarks:        ------------------- PNIs IPv6 ----------------------
remarks:        
remarks:        ------------------- LU-CIX IPv4 --------------------
import-via:     AS49624 from AS-ANY accept ANY
export-via:     AS49624 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- LU-CIX IPv6 --------------------
import-via:     afi ipv6.unicast AS49624 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS49624 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- DE-CIX IPv4 --------------------
import-via:     AS6695 from AS-ANY accept ANY
export-via:     AS6695 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- DE-CIX IPv6 --------------------
import-via:     afi ipv6.unicast AS6695 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS6695 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- AMS-IX IPv4 --------------------
import-via:     AS6777 from AS-ANY accept ANY
export-via:     AS6777 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- AMS-IX IPv6 --------------------
import-via:     afi ipv6.unicast AS6777 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS6777 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- LINX IPv4 ----------------------
import-via:     AS8714 from AS-ANY accept ANY
export-via:     AS8714 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- LINX IPv6 ----------------------
import-via:     afi ipv6.unicast AS8714 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS8714 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------ FRANCE-IX IPv4 ------------------
import-via:     AS51706 from AS-ANY accept ANY
export-via:     AS51706 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------ FRANCE-IX IPv6 ------------------
import-via:     afi ipv6.unicast AS51706 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS51706 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- NL-IX IPv4 ---------------------
import-via:     AS34307 from AS-ANY accept ANY
export-via:     AS34307 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- NL-IX IPv6 ---------------------
import-via:     afi ipv6.unicast AS34307 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS34307 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        -------------------- BNIX IPv4 ---------------------
import-via:     AS5406 from AS-ANY accept ANY
export-via:     AS5406 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        -------------------- BNIX IPv6 ---------------------
import-via:     afi ipv6.unicast AS5406 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS5406 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------ EQUINIX IPv4 --------------------
import-via:     AS24115 from AS-ANY accept ANY
export-via:     AS24115 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------ EQUINIX IPv6 --------------------
import-via:     afi ipv6.unicast AS24115 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS24115 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- DE-CIX DUS IPv4 ----------------
import-via:     AS56890 from AS-ANY accept ANY
export-via:     AS56890 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- DE-CIX DUS IPv6 ----------------
import-via:     afi ipv6.unicast AS56890 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS56890 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- DE-CIX HAM IPv4 ----------------
import-via:     AS43252 from AS-ANY accept ANY
export-via:     AS43252 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- DE-CIX HAM IPv6 ----------------
import-via:     afi ipv6.unicast AS43252 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS43252 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- DE-CIX MUC IPv4 ----------------
import-via:     AS47228 from AS-ANY accept ANY
export-via:     AS47228 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- DE-CIX MUC IPv6 ----------------
import-via:     afi ipv6.unicast AS47228 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS47228 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- TOP-IX IPv4 --------------------
import-via:     AS25309 from AS-ANY accept ANY
export-via:     AS25309 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------- TOP-IX IPv6 --------------------
import-via:     afi ipv6.unicast AS25309 from AS-ANY accept ANY
export-via:     afi ipv6.unicast AS25309 to AS-ANY announce AS-PROXIMUS
remarks:        
remarks:        ------------------ Downstream ----------------------
remarks:        --------------------------------------------------
admin-c:        GM17277-RIPE
tech-c:         SG11179-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-TTL
mnt-by:         TANGO-MNT
created:        2011-04-21T10:06:35Z
last-modified:  2026-01-26T13:14:45Z
source:         RIPE
% 1734 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/56665

const res = await fetch('https://ip-fd.net/api/v1/asn/56665', {
  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/56665', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/56665');
curl_setopt($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/56665", 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.

AS174
AS1299	Arelion Sweden AB TWELVE99
AS2914	NTT America, Inc. NTT-DATA-2914
AS3356	Level 3 Parent, LLC LEVEL3
AS6453	TATA COMMUNICATIONS (AMERICA) INC AS6453
AS6774	Belgacom International Carrier Services SA ASN-BICS
AS6939	Hurricane Electric LLC HURRICANE

AS2602	Fondation RESTENA RESTENA
AS3573	Accenture LLP ACCENTURE
AS8632	Luxembourg Online S.A. LOL-AS
AS21179	Logwin AG Logwin-AS
AS25094	Centre des technologies de l'information de l'Etat CTIE
AS25367	Proximus Luxembourg S.A. AS-ADTS-LU
AS44708	PAUL WURTH S.A. PAULWURTH-AS
AS51154	pCloud AG pCloud
AS51497	Innova Co S.A.R.L. INNOVA-LU
AS57965	International Committe of the Red Cross (ICRC) ICRC-LUM
AS199245	PricewaterhouseCoopers Societe cooperative PWCLU
AS202438	Encevo S.A encevo
AS203143	Banque et Caisse d'Epargne de l'Etat Luxembourg BCEE-LU
AS204299	KPMG Audit S.a r.l. KPMG-LU
AS208406	BANK DEGROOF PETERCAM SA ASBDP
AS210834	LU-CIX Management G.I.E. LU-CIX-IT
AS211999	LuxProvide S.A. LuxProvide
AS212630	Societe de l'aeroport de Luxembourg SA AS_LUXAIRPORT
AS213785	Banque Internationale a Luxembourg SA BIL-LU