AS31477 Duocast B.V.
IPv4 addresses
30,720
IPv6 /48 networks
1,179,670
RPKI
38 valid17 no ROA
Peers and downstreams
149
Holder
- AS name
- DUOCAST-AS
- Description
- Duocast B.V.
- Organisation
- Duocast B.V.
- Registered in
- Groningen, Netherlands
- Abuse contact
- abuse@duocast.nl
- Assigned
- 2004-05-25
- Registered
- 2004-05-26
- Record last changed
- 2026-09-25 10:23 UTC
185.134.65.0/24185.180.96.0/22185.180.96.0/24185.80.245.0/24185.80.246.0/24193.138.248.0/22193.138.248.0/24193.138.250.0/24193.164.144.0/24193.177.163.0/24193.200.178.0/24193.202.109.0/24193.9.23.0/24194.13.12.0/23194.13.14.0/24194.13.8.0/22194.13.8.0/24195.137.165.0/24195.137.169.0/2437.9.160.0/2145.82.188.0/2282.150.139.0/2483.137.144.0/2183.137.146.0/2483.137.151.0/2487.238.168.0/2187.238.171.0/2489.188.0.0/1989.188.0.0/2089.188.0.0/2189.188.8.0/2189.200.200.0/2189.200.200.0/2491.196.104.0/2491.196.105.0/2491.196.106.0/2491.196.107.0/2491.198.178.0/2491.206.136.0/2391.209.192.0/2491.213.95.0/2491.220.82.0/2493.184.96.0/20
| AS8312 | Bas Smit trading as Zylon ZYLON-AS |
| AS29028 | DirectVPS B.V. COMPUKOS-AS |
| AS35974 | Quality Technology Services, LLC QTS-EEM |
| AS39002 | XINDI Networks SRL XINDI-AS |
| AS51517 | Oranjekoek AS-ORANJEKOEK |
| AS51923 | 'Nothing But Air' Services B.V. NBA-AS |
| AS198508 | Plusine Systems B.V. PLUSINE-AS |
| AS198692 | Eurofiber Cloud Infra B.V. BYTESNET-AS |
| AS201723 | R. van der Meijden RVDMEIJDEN-AS |
| AS204751 | MobielWerkt B.V. MOBIELWERKT |
| AS213052 | Bram Wittendorp trading as BittenBytes BittenBytes |
| AS218916 | Fiscale Inlichtingen en Opsporingsdienst (FIOD) FIOD |
| AS398300 | OCIENT INC OCIENT-INC |
| AS559 | SWITCH Switch |
| AS1031 | PEER 1031 LLC PEER1-1031 |
| 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 |
| AS3212 | Telemach Slovenija d.o.o. TELEMACH |
| AS3214 | xTom GmbH XTOM |
| AS3216 | PJSC "Vimpelcom" SOVAM-AS |
| AS3320 | Deutsche Telekom AG DTAG |
| AS3333 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) RIPE-NCC-AS |
| AS3399 | Obenet AB OBE-NET |
| AS4455 | IX Reach Ltd BSO |
| AS4637 | Telstra Global ASN-TELSTRA-GLOBAL |
| AS4657 | StarHub Ltd STARHUB-INTERNET |
| AS5405 | Inter.link GmbH INTERDOTLINK |
| AS6057 | Administracion Nacional de Telecomunicaciones AS6057 |
| AS6204 | TMRC GROUP SRL ZET-NET |
| AS6424 | EDGOO NETWORKS UNIPESSOAL LDA EDGOO |
| AS6663 | Euroweb Romania S.R.L. TTI-NET |
| AS6667 | Elisa Oyj EUNET-FINLAND |
| AS6696 | VERIXI SA VERIXI |
| AS6777 | Amsterdam Internet Exchange B.V. AMS-IX-RS |
| AS6797 | GlobalConnect AB GLOBALCONNECT-NET |
| AS7195 | EDGEUNO S.A.S AS7195 |
| AS7713 | PT Telekomunikasi Indonesia telkomnet-as-ap |
| AS8218 | Zayo Infrastructure France SA NEO-ASN |
| AS8298 | IPng Networks GmbH IPNG |
| AS8312 | Bas Smit trading as Zylon ZYLON-AS |
| AS8529 | Zain Omantel International FZ-LLC OMANTEL-AS |
| AS8966 | EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC Etisalat-AS |
| AS9044 | BSE Software GmbH SOLNET |
| 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 |
| AS13194 | UAB "Bite Lietuva" BITE |
| 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 |
| AS15830 | Equinix (EMEA) Acquisition Enterprises B.V. Equinix |
| AS15943 | wilhelm.tel GmbH WTNET-AS |
| AS15958 | CETIN Ltd. Belgrade CETIN_doo_AS |
| 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 |
| AS20932 | Services Industriels de Geneve SIG-ST |
| AS22356 | Durand do Brasil Ltda AS22356 |
| AS24482 | SG.GS SGGS-AS-AP |
| AS24961 | WIIT AG MYLOC-AS |
| AS25091 | IP-Max SA IP-Max |
| AS25160 | Vorboss Limited VORBOSS |
| AS25220 | equada network GmbH GLOBALNOC-AS |
| AS28917 | Fiord Networks, UAB Fiord-AS |
| AS29028 | DirectVPS B.V. COMPUKOS-AS |
| AS29075 | IELO-LIAZO SERVICES SAS IELO |
| AS29140 | Hostserver GmbH HOSTSERVER-AS |
| AS29632 | Netassist International EOOD NASSIST-AS |
| AS30844 | Liquid Telecommunications Ltd LIQUID-AS |
| AS33891 | Core-Backbone GmbH CORE-BACKBONE |
| AS34019 | Hivane Association HIVANE |
| AS34177 | Celeste SAS CELESTE-AS |
| AS34288 | Kantonsschule Zug AS34288 |
| AS34927 | iFog GmbH iFog-GmbH |
| AS35280 | F5 Networks SARL F5 |
| AS35974 | Quality Technology Services, LLC QTS-EEM |
| AS36236 | NetActuate, Inc NETACTUATE |
| AS37100 | SEACOM Limited |
| AS37468 | Angola Cables |
| AS37497 | Network Platforms (PTY) LTD |
| AS37721 | Virtual Technologies & Solutions |
| AS39002 | XINDI Networks SRL XINDI-AS |
| AS39122 | Blacknight Internet Solutions Limited BLACKNIGHT-AS |
| AS39249 | Netassist International EOOD KICUA-AS |
| AS39351 | 31173 Services AB ESAB-AS |
| AS39686 | Eurofiber Nederland BV AS-EUROFIBER |
| AS41327 | Fiber Telecom S.p.A. FIBERTELECOM-AS |
| AS41666 | Institute for Pyrotechnical Cleaning (limited company) PYRO-AS |
| AS42541 | Fiberby ApS FIBERBY |
| AS44901 | Belcloud LTD belcloud |
| AS45489 | Sri Lanka Telecom PLC, GLobal Peering SLT-GLOBAL |
| AS47147 | Anexia Cloud Solutions GmbH AS-ANX |
| AS48185 | team.blue NV team_blue |
| 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 |
| AS50629 | LWLcom GmbH LWLCOM |
| AS50763 | Robert McKay MCKAYCOM |
| AS51184 | Fonira Telekom GmbH FONIRA |
| AS51185 | MainStreaming SpA MAINSTREAMING-AS |
| AS51517 | Oranjekoek AS-ORANJEKOEK |
| AS51873 | Arcade Solutions AG AS-ARCADE |
| AS51923 | 'Nothing But Air' Services B.V. NBA-AS |
| AS56655 | Gigahost AS GIGAHOST |
| AS56911 | Warian S.R.L. ASN-WARIAN |
| AS56987 | ABACLOUDA SAS AS-ABACLOUDA |
| AS61049 | Exascale Ltd EXASCALE |
| AS61573 | IP TELECOM AS61573 |
| AS62000 | SERVERD SAS AS62000 |
| AS62167 | Tismi BV Tismi |
| AS64475 | Freifunk Frankfurt am Main e.V. FREIFUNK-FRANKFURT |
| AS137409 | GSL Networks Pty LTD GSLNETWORKS-AS-AP |
| AS198150 | SIACOM JSC SIACOM-AS |
| AS198508 | Plusine Systems B.V. PLUSINE-AS |
| AS198692 | Eurofiber Cloud Infra B.V. BYTESNET-AS |
| AS199524 | G-Core Labs S.A. GCORE |
| AS199938 | Netzwerge GmbH NETZWERGE |
| AS204092 | Association GRIFON GRIFON |
| AS204751 | MobielWerkt B.V. MOBIELWERKT |
| AS205103 | Telegraph42 Management GmbH TELEGRAPH-AS |
| AS205112 | PHILUNET GmbH PHILUNET |
| AS205206 | Netsite A/S Netsite |
| AS209022 | Tschajera Limited Tschajera-Limited |
| AS209090 | Association Stolon STOLON |
| AS209823 | Enki Multimedia EURL ENKI-AS |
| AS212483 | LEVEL EIGHTY-SIX COMMUNICATIONS LTD level86 |
| AS212635 | Jurrian van Iersel AS212635 |
| AS213052 | Bram Wittendorp trading as BittenBytes BittenBytes |
| AS213241 | TECHIT.BE SRL TECHIT |
| AS218916 | Fiscale Inlichtingen en Opsporingsdienst (FIOD) FIOD |
| AS263152 | MIGO TELECOM AS263152 |
| AS271253 | LINK BRASIL TELECOMUNICACOES LTDA AS271253 |
| AS398300 | OCIENT INC OCIENT-INC |
Routing changes
Last 30 days| 2026-10-04 04:46 UTC | Neighbour gone | AS263444 | upstream |
| 2026-10-04 04:46 UTC | Neighbour gone | AS58299 | peer |
| 2026-10-04 04:46 UTC | Neighbour gone | AS50869 | upstream |
| 2026-10-04 04:46 UTC | Neighbour gone | AS41051 | upstream |
| 2026-10-04 04:46 UTC | Neighbour gone | AS31027 | peer |
| 2026-10-04 04:46 UTC | Neighbour gone | AS20764 | upstream |
| 2026-10-04 04:46 UTC | Neighbour gone | AS4230 | upstream |
| 2026-10-04 04:46 UTC | Neighbour gone | AS3462 | upstream |
| 2026-10-04 04:46 UTC | New neighbour | AS218916 | peer |
| 2026-10-04 04:46 UTC | New neighbour | AS213052 | peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS9044 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS8966 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS8298 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS8218 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS7713 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS7195 | upstream to peer |
| 2026-10-04 04:46 UTC | New neighbour | AS6797 | peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS6777 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS6696 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS6663 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS6204 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS62000 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS61049 | upstream to peer |
| 2026-10-04 04:46 UTC | New neighbour | AS6057 | peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS56911 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS56655 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS5405 | upstream to peer |
| 2026-10-04 04:46 UTC | New neighbour | AS49559 | peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS49434 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS48646 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS48362 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS47147 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS4657 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS4637 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS4455 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS41327 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS39686 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS39351 | upstream to peer |
| 2026-10-04 04:46 UTC | New neighbour | AS39249 | peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS37497 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS37468 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS37100 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS35280 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS34177 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS34019 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS33891 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS3320 | upstream to peer |
| 2026-10-04 04:46 UTC | New neighbour | AS3216 | peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS3214 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS30844 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS29632 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS29075 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS25091 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS24961 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS24482 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS22356 | upstream to peer |
| 2026-10-04 04:46 UTC | New neighbour | AS209090 | peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS209022 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS205103 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS20485 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS1764 | upstream to peer |
| 2026-10-04 04:46 UTC | New neighbour | AS17557 | peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS15958 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS15943 | upstream to peer |
| 2026-10-04 04:46 UTC | New neighbour | AS15830 | peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS15802 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS15576 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS14840 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS137409 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS13194 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS13030 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS12779 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS1267 | upstream to peer |
| 2026-10-04 04:46 UTC | Relationship changed | AS1031 | upstream to peer |
| 2026-10-04 04:46 UTC | Prefix gone | 83.137.145.0/24 | |
| 2026-10-04 04:46 UTC | Prefix gone | 45.82.188.0/24 |
WHOIS
aut-num: AS31477 as-name: DUOCAST-AS org: ORG-DA16-RIPE remarks: ================================================ remarks: - remarks: We have an open peering policy. If you're not remarks: not peering with us already, please contact us remarks: at peering@duocast.nl remarks: - remarks: --- Peering Exchanges -------------------------- remarks: - remarks: Exchange : AMS-IX remarks: Location : Globalswitch, Amsterdam remarks: Speed : 10 Gbps remarks: IPv4 : 80.249.209.98 remarks: IPv6 : 2001:7f8:1::A503:1477:1 remarks: - remarks: Exchange : NL-IX remarks: Location : EuNetworks, Amsterdam remarks: Speed : 10 Gbps remarks: IPv4 : 193.239.116.132 remarks: IPv6 : 2001:7f8:13::a503:1477:1 remarks: - remarks: --- Communities sent to customers -------------- remarks: - remarks: Learned at Globalswitch Amsterdam remarks: 31477:2500 routes from AMS-IX peers remarks: 31477:2700 routes from KPN eurorings remarks: - remarks: Learned at EuNetworks Amsterdam remarks: 31477:2600 routes from Level3 remarks: 31477:2300 routes from NL-IX peers remarks: 31477:2400 routes from Openpeering remarks: - remarks: Customer routes: remarks: 31477:1000 cust. routes, announce to all remarks: - remarks: --- Communites acccepted from customer --------- remarks: - remarks: 31477:666 blackhole remarks: (Set next hop to null interface for IX'es) remarks: (Stamp with blackhole community for transit) remarks: - remarks: --- Contacts ----------------------------------- remarks: - remarks: abuse contact: abuse@duocast.nl remarks: peering contact: peering@duocast.nl remarks: noc contact: noc@duocast.nl remarks: - remarks: ================================================ remarks: - remarks: -------------------- Transit ------------------- remarks: - remarks: Level3 remarks: - remarks: KPN Eurorings remarks: - remarks: ----------------- NL Transit ------------------- remarks: - remarks: Openpeering remarks: - remarks: ------------------ Customers ------------------- remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: ---------------- Private Peers ----------------- remarks: - remarks: Xconnect24 remarks: - remarks: ---------------- AMS-IX Peers ------------------ remarks: - remarks: Ams-ix Routeserver remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: ----------------- NL-IX Peers ------------------ remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: - remarks: ================================================ admin-c: DUO-RIPE tech-c: DUO-RIPE status: ASSIGNED mnt-by: MNT-DUOCAST mnt-by: RIPE-NCC-END-MNT created: 2004-05-26T11:33:27Z last-modified: 2026-09-25T10:23:19Z source: RIPE % 480 routing policy lines (import/export) not shown