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4b42 Internet Exchange Point

Zurich, Switzerland · 1 facility · 285 networks · Visit IX website →

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About 4b42 Internet Exchange Point

4b42 gives every participant free full-table IPv4 and IPv6 transit alongside a free peering port. 288 networks connect (Aug 2026) through a single building at Green Datacenter Lupfig, reached by cross-connect, VLAN or an EoIP, GRETAP or VXLAN tunnel — which is how a one-site fabric carries that many. Its route server filters announcements automatically against registry route objects, and the peering policy is open.

4b42 Internet Exchange Point at a Glance

Operated by
4b42 UG — a German limited company running a neutral Zurich exchange
Fabric locations
Green Datacenter ZRH1 Lupfig
Port options
Free at 100M, 1G and 10G, reached by cross-connect, VLAN or EoIP, GRETAP or VXLAN tunnel; full IPv4 and IPv6 transit included at no charge
Member networks
288 networks (Aug 2026)
Route servers
Route server on AS35708; prefixes filtered automatically against IRR route objects
Getting connected
Open peering policy; connect by cross-connect, VLAN or tunnel. No membership and no port fee
Interactive map

Facilities reaching 4b42 Internet Exchange Point (1)

Networks at this exchange (273)

/dev/nulll Research Network (AS207613) 10VPN Research Network (AS49134) 186526 Network (AS200536) 215248 - Bastiaan Mathijs Brink (AS215248) 39D Services (AS34979) 4b42 Internet Exchange Point Route Servers (AS35708) 4WNET AS268707 (AS268707) Adrian Trifonov (AS199177) AG (AS211337) AgocsNet (AS211495) Air's Project Private Network (AS142553) Alanyhq Networks Limited (AS41255) Alce Lafranque (AS62430) Alex's Research Network (AS135103) Alexander Karl (AS49933) Alexandre Roux (AS203062) ANDERSTB (AS201911) Anindisa Komputindo Pratama (AS136105) APALM (AS215562) Arjen Essink (AS199183) Artūrs Lihners (AS211008) AS212635 (AS212635) AS215932 Hyrule (AS215932) AS35100 (AS35100) Asian Network (AS137385) ASR INFOPRO (AS200529) ASTROPHAGE (AS210836) Asympto Networks (AS39533) AVS ISP (AS210464) Baoshuo Network (AS141776) baragoon networks (AS215887) Beat Joerg (AS210076) Beliy Most (AS44406) Bernardus Jansen (AS211840) BGP.Exchange - Route Servers (AS24381) BILLY Remi (AS204186) BIXCE (AS401753) Blycka (AS48767) Bojin Li (AS198734) Bontekoe Technology (AS212703) BOZHAN LIANG (AS215007) CatIO Network (AS137256) CENUTA Hosting (AS213252) Christian-Vonderstein (AS211715) Christopher Stephens (AS202540) CirrusLab (AS212129) cr0bar (AS56758) CushNet (AS209506) CutieLand (AS211695) Cyprea (AS147039) Daniel Piekacz (AS212196) Daniil Gentili (AS198747) Data-Beam Business Solution (AS150000) DDPO (AS210103) Delight Fiber (AS59813) DENIS NOLAN (AS204882) devplayer0 (AS211024) DevStorage (AS210633) DISPAISY-AS (AS215760) Dissidence (AS200857) DNS-OARC-112 (AS112) dongyu (AS202256) Dream Engineering (AS152726) Dream Recovery (AS205532) ELBFIBER-CB (AS208480) ERTIUS-NET (AS213576) ESPORTS LIMITED (AS138365) EvilNET (AS205232) Evsio0n Network (AS139833) EXAGROUP (AS202827) FABNET (AS209209) Fantasy Sky Internet eXchange (AS139073) Filtiwan Network (AS213372) Fish Network (AS209218) Flixtel (AS138768) Flooyd Telecom LTDA (AS198057) Florian Martin Esser (AS209859) Francesco Masala (AS212539) FSIT AG (AS59891) Fubuki Network (AS212425) Gaetan Ferez (AS212783) Gentlent GmbH (AS52112) Giannis Kontos (AS202224) Giuseppe Augiero (AS204611) Gonzalo-Ferrera-Borras (AS213716) Graham Hayes (AS206290) Gransy s.r.o. - anycastdns.cz (AS60592) Gregory Shapiro (AS199518) Hanxun-Xu (AS214344) Haraguroicha Legacy Internet Service (AS212359) HEIJKOOP (AS214723) Hellomouse (AS204446) HELMICH NET (AS209164) Hop179 (AS11967) Hoshi Network (AS134666) Hostingstudio AS59570 (AS59570) HOTARU NETWORK (AS200455) HWSL - B00B (AS212149) ILHAM MAULANA (AS203686) Infinitron Global Communications (AS14447) InterBS S.R.L. (BAEHOST) (AS61493) InterWebs Ltd. (AS202265) IP·RED (AS262934) iYoRoy-Network (AS205369) Jianfeng Ren (AS200890) JINZE YANG (AS205794) Jixian Zeng (AS209645) JK-Network (AS207705) Joan Cirer Capo (AS202222) Johan Hedberg (AS8949) JONASLED (AS197469) Jonathan Broering (AS213386) Jonathan Smith (AS200731) Josip Tišljar Mataušić (AS215916) Juli Jane (AS31396) Julius Wolff (AS211688) Junxiao Shi (AS200690) Kalpak Mukhopadhyay Network LAB (AS213326) Keiibiin's Holdings Limited (AS148971) KOEHR-AS (AS213472) LaptopCat (AS212470) Leland Network (AS214899) LEON-AARON-TIEKOETTER (AS208694) Leonardo de Souza Rodrigues (AS204374) Lily Network (AS203236) Lorenzo Zolfanelli (AS211414) LR Techniek (AS202262) Lynqia Network (AS213409) Mactel (AS142381) Mainstreet-Net (AS267848) Manuel Merkli (AS206330) MarbleISL Network (AS213092) Marc Provost (AS212037) MARIA Network (AS58339) Marius Florian Dumitrascu (AS59922) MARQUES (AS210013) Martin Arendtsen (AS198660) Matis GAGNEUX (AS212844) MCdawanjia Network (AS140682) MegaLink SRL (AS22541) Mercycat Network (AS18428) MieglNet (AS210951) Mitchell van der Velden (AS214810) Mitues Global Teknolojiler (AS205381) MLGT (AS204508) Moe (AS213262) MoeDove Global (AS44324) msrtg (AS210941) Muilties Network (AS205329) muscope (AS42692) MYIP (AS215956) Mykola Turskyi (AS198942) Navice Consulting (AS137490) NetJoin (AS64445) NetNext (AS215212) NetOne NL (AS200132) Niklas Tom Teide Fricke (AS199488) NITAET (AS57883) NOAHNETWORK (AS214033) nonexiste.net (AS26457) Novelcomm (AS206735) Nusantara Teknologi Semesta (AS140442) OASIS INFOTECH LIMITED (AS198768) Objedinenie Group (AS41119) OCTIGNITE (AS205163) Olaf Lienau (AS202929) Onvox (AS1050) OwONet (AS150184) Pankerl-Media (AS34924) PAOCLOUD (AS133504) Paul-Henri Zimmerlin (AS206569) pcela (AS199763) PCH AS3856 (AS3856) PCH AS42 (AS42) Peaktera (AS32931) PEER-1 (AS1031) Pemerintah Kabupaten Banjar (AS138816) PHANTOM HIVE NETWORK (AS211035) Philippe Bonvin (AS204082) Phoenix Network (AS212237) PHOTONSPARK (AS216249) Pich Tantichukiatikul (AS205977) PIONEN (AS216469) Poema Network (AS203472) Polish IPv6 Lab (AS210234) POLOPRO (AS208824) Pongery AS (AS200160) Potat0 Network (AS200078) PP-Networks LAB-ASN, IT (AS215536) PP-Networks Solutions, IT (AS211358) PRIMABANANEN (AS133535) PRIMO NETWORK (AS209669) PT Infotech Tantami Nusantara (AS151513) Puls Tech (AS204676) QingYao Decentralized Network (AS210903) R4FO.COM (AS214161) Raoul Brouns (AS215296) Redacted Networks Northern (AS208646) REDRAY STUDIOS (AS399196) Remco van Zuijlen (AS208717)

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