MIX Data Center
Via Caldera 21, Building D, Milano, 20153, IT
Carriers on-net
267
Two hundred and sixty-seven networks make Via Caldera 21 the densest peering address in Italy, and MIX's rooms there are the reason. Six exchanges reach the facility - MIX-IT, Equinix Internet Exchange Milan, NetIX, nine-IX, EURASIA-IX and Cogent's Global Peer Exchange - alongside twelve carriers, on a record opened in August 2010. What MIX sells inside it is narrow: its 2025 annual report states that its data centres provide housing services exclusively in connection with public peering, so the rooms are an adjunct to the exchange rather than a merchant product. The 20153 Milano address is Caldera Park, a multi-operator campus where CDLAN, Retelit, Seeweb, Telnet, EXA and Uno Communications each hold facilities of their own. MIX has since added edge points inside Mediterra's Rome building and two Aruba sites.
Network ecosystem — 267 carriers on-net
6 Tier 1 & transit
1 Cloud
1 CDN & content
259 Regional & enterprise
Notable: Arelion (Twelve99) (AS1299) · Cogent Communications (AS174) · GTT Communications (AS3257) · Amazon.com (AS16509) · Hurricane Electric (AS6939)
.NetAssist LLC S.L. EOOD (AS8772)2S Computers (AS204471)4ALL (AS50316)8ROUTE (AS34428)Acantho (AS21309)Active Network S.p.A. (AS197075)ADAL NETWORK SRL (AS204121)adista - inherent (AS16347)Air2bite (AS35617)Airbeam (AS50877)Aircomm S.r.l. (AS196865)Albanian Fiber Telecommunications (AS198890)ALENANET (AS44741)Alfa Bit Omega (AS208354)Alfanews (AS197589)ALL42 (AS212054)ALTEASYSTEMS (AS215955)Altitud Italia S.r.l. (AS57111)Amazon.com (AS16509)ANIMASGR (AS56641)Anycast ccTLD .it (AS197440)Arcolink Telecomunicazioni S.r.l. (AS51333)Arelion (Twelve99) (AS1299)Ari@net (AS205330)Aruba (AS31034)Aryel (AS59829)AS8882 s.r.o. (AS8882)ASValcom (AS206299)Axera AS34758 (AS34758)BBANDA (AS196749)
Show 237 more carriers
BBBell (AS34606)Bezeq (AS6810)Bluwifi (AS203180)BrianTel (AS43843)BSO (AS4455)C.Company (AS204309)CDLAN (AS20836)CDN77 (AS60068)CesenaNet (AS200043)Cielo (AS51001)Clio s.p.a. (AS9104)Cloudtel (AS212608)Coding (AS204504)Cogent Communications (AS174)Connecting Project (AS198128)CONNECTIVIA (AS207594)ConnectLife (AS212602)Connesi (AS15605)Continent 8 Technologies (AS14537)Convergenze S.p.A.SB (AS39120)Core-Backbone (AS33891)CSIGE (AS200813)CWNET (AS213260)DaKnObNET (AS4601)Data Felix (AS208919)Dev Italia (AS44747)Digicom Albania (AS35444)Digital Globe (AS208376)Dimensione (AS202870)Dodonet (AS199324)Dolomites Network (AS205099)EASYNET (AS21454)Ehiweb (AS43989)EI TOWERS (AS34599)Eis S.r.l. (AS56488)Elmec Informatica (AS39217)Elsynet S.r.l. (AS196983)EMAXY AS197825 (AS197825)Engineering Ingegneria Informatica S.p.A. (AS21176)Eolo SpA (AS35612)Estracom S.p.A. (AS31319)Etere (AS213972)EURONET-AS (AS49597)Evacom (AS213338)F-NETWORK (AS211991)Fastcon (AS198399)Fastnet Italy (AS8265)Fastweb (AS12874)Fiber Telecom (FT) (AS41327)Fiberwide (AS51569)FibreConnect-AS (AS213462)Fink Telecom Services GmbH (AS6775)Fly Network (AS209591)FlyNet.it (AS207054)Fondazione IFOM (AS35193)Fontel (AS39808)GARR (AS137)Gate t1 (AS204326)GEANT IAS (AS21320)GEANT R&E (AS20965)Geny Communications (AS45015)GI-GROUP (AS207964)Global Com Basilicata (AS206182)Globalnet (AS208867)GOLINE (AS202032)Grifonline S.r.l. (AS43942)GTT Communications (AS3257)HAL Service (AS44092)Halley Informatica (AS205985)HatHost (AS211360)HelloTel (AS206539)Horizon Telecom (AS201518)Host.it S.p.A. (AS47242)Huge Networks (AS264409)Hurricane Electric (AS6939)Hynet (AS199666)IGT Lottery (AS35574)InfoCamere (AS25569)Infrastructure COLO (AS203201)INFRONT ITALY (AS211918)Init7 (AS13030)InNet (AS204180)Insiel (AS44831)Intendo (AS34691)Inter.link (AS5405)Intercom s.r.l. (AS8224)Interfibra (AS200553)INTERNET HELLAS (AS209162)InternetONE-BackBone (AS5398)Intred SpA (AS31115)IP Technology (AS206476)ip telecom (AS29449)Ipkom (AS198013)IPTP Networks (AS41095)Irpinia Net-Com SRL (AS48500)ISILine SRL (AS13113)IT.Gate (AS12779)ITNET Italia (AS3242)IVO by D.t.s. S.r.l. (AS49605)IX Reach (AS43531)KT Solutions (AS204958)Lancom (AS199081)Lenfiber (AS59699)Leonet srl (AS15691)Lepida AS205139 (AS205139)Lepida AS31638 (AS31638)Level7 (AS197506)Libra (AS198090)Liguria Digitale (AS39719)Logos Technologies (AS41606)Lorenzo Rossi (AS209138)LUMIA NETWORK (AS212559)Mandarin S.p.A. (AS47408)Marconi Solutions Srls (AS203847)Medi@net (AS43364)MEDIA VENETO (AS49289)MEDIANET INVEST M.I.K.E (AS200736)Melita (AS12709)Messagenet (AS58082)Metrolink (AS8816)Micro Servizi (AS202761)MicroWifi (AS213063)MINERVA-AS (AS214435)Mioindirizzo (AS201102)Mitan Telematica (AS211391)MIX-IT Route Servers (AS61968)MIX-IT Services (AS16004)Momax Network (AS29438)MU Network (AS204366)MultiWire S.r.l. (AS44084)muscope (AS42692)Myweb (AS207606)Naquadria (AS201333)NAV Communications (AS6718)Navigo s.r.l. (AS200794)NEMO Italy (AS200108)Net-Admin (AS206811)NetAssist (AS29632)NETHIVE (AS206135)NetIX Communications (AS57463)NetJoin (AS64445)Netoip.com (AS202709)NetPro IT Solution SRL (AS56781)NEWCOM (AS209970)Newtec (AS201602)Nexim (AS56786)Nexusway (AS199947)NHM (AS62275)Nibble Network (AS202896)NOINET (AS209368)NOVA NETWORKS S.R.L. (AS28941)Nova Quadri (AS198380)NOVACONN (AS203462)Novelcomm (AS206735)NS3 (AS39479)NUOVARETI (AS200984)Optima Italia S.p.A. (AS44513)Orakom (AS199181)Panservice (AS20912)Planetel (AS47217)Professional Link (AS59862)Profexional (AS209358)PROGETTO EVO (AS197293)Promo.iT SRL (AS8855)RadioDataNet (AS198059)RAIWAY (AS209902)Redder Telco (AS33986)Register - Settimo Milanese (AS39729)Retelit Spa (AS28716)ReteStar (AS204389)RETN (AS9002)REVOLUTION PROVIDER (AS41720)RF COM (AS211084)Rocket Fibre (AS8801) (AS8801)Rocket Way (AS208920)Seeweb (AS12637)Seflow S.N.C. Di Marco Brame & C. (AS49367)Servereasy Srl (AS60798)SIM INFORMATICA (AS206460)Sinergia Telecomunication (AS60989)SIOPLUS (AS206173)Siportal Srl (AS28999)Sirius Technology SRL (AS60501)Sistemi HS (AS21101)Sistemi WiFi (AS208851)Sokom S.r.l. (AS57507)Soluzione Uno (AS213573)Spadhausen (AS62166)Springo (AS209137)Subspace (AS32261)T.I.E.T. di Franceschini Maris & C. (AS200752)TechLabItalia (AS211785)Tecnodata Trentina (AS200409)Tecnotel Servizi Tecnologici (AS48544)Teldata S.r.l. (AS200254)Telecom Italia San Marino (AS15433)Telecom Italia Sparkle (AS6762)Telehouse (AS57344)TELMEKOM (AS49088)Telnet (AS5392)Terra Spa (AS31222)Terrecablate (AS29050)Time-Net AS51580 (AS51580)Tiscali (AS8612)ToscanaTLC (AS57913)Trentino Digitale SPA (AS12835)Unica Telecomunicazioni (AS203223)Uniconnect AS205322 (AS205322)Uniconnect AS56327 (AS56327)Unidata S.p.A. (AS5394)Uno Communications SpA (AS9137)Vianova (AS21056)ViaSat (AS7155)Videobyte (AS49709)VIDEOTIME spa MEDIASET group (AS48634)VION (AS203059)Vodafone Italy (AS30722)VoipTel Italia (AS201183)WARIAN (AS56911)Warinet Global Services SA (AS15469)WAVECOM (AS200497)Waycom International (AS30889)WeNetwork (AS205891)WIFI MULTIMEDIA (AS206947)Wifiweb srl (AS47927)Wifly srl (AS207013)WIIT Group (AS24961)Wime (AS207029)Wimore (AS203489)WIREM Italy (AS50352)Wish Networks (AS199362)Wispone (AS60822)Wolnext (AS49524)XeniaGroup (AS213791)Xmatica (AS60475)Xstream (AS198102)ZEROMIST (AS6517)
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Frequently asked questions
Which exchanges are reachable at Via Caldera 21?
MIX-IT, Equinix Internet Exchange Milan, NetIX, nine-IX, EURASIA-IX and Cogent's Global Peer Exchange, alongside twelve carriers and 267 networks.
What can a company buy from MIX in this building?
Housing tied to public peering. MIX's 2025 annual report limits the service to housing supplied in connection with the exchange, so it is not general-purpose colocation.
Who else operates at the same address?
CDLAN's C21, Retelit's Avalon 1, Seeweb Milano Caldera, Telnet's Caldera building, EXA Edge DC Milan and Uno Communications UNO-NX01 all hold their own facility records at Caldera Park.
Where are MIX's other points of presence?
Rome, inside Mediterra's ROM 01 building since November 2023, and at Aruba's IT3 and IT4 sites, the latter added at the end of October 2024.