Internet exchange
Serbian Open Exchange
active Belgrade, Serbia BEG
Overview
What this is
An internet exchange is shared switching where networks interconnect directly instead of paying a transit provider to carry traffic between them. Members take a port on the fabric and an address on the peering LANs below, then agree bilaterally (or through a route server) about which routes to exchange. Turning up at one is a deliberate choice about how a network wants to be reached, which is why exchange presence says something a routing table cannot.
- Location
- Belgrade, Serbia
- Region
- Europe
- Airport code
BEG- Status
- Active
Everything on this page is what Packet Clearing House had recorded when the directory was collected, not a live view of the fabric. Member counts in particular lag reality, and around 45% of the exchanges in this dataset publish no participant list at all.
Fabric
Peering LANs
The shared subnets members take an address on. A network with an interface in one of these blocks is at this exchange by definition, which is what makes exchange presence a recorded fact rather than an inference. Most exchanges run one IPv4 and one IPv6 LAN; extra blocks are usually growth or a migration.
| Prefix | Family | Status | Participants |
|---|---|---|---|
| 185.1.27.0/24 | IPv4 | Active | 42 |
| 2001:7f8:1e::/64 | IPv6 | Active | 51 |
Deprecated and retired blocks are listed rather than dropped. A decommissioned LAN still records how this fabric used to be reached, and filtering it would quietly rewrite the exchange's history.
Participants
Member networks
Every network PCH records with an address on one of the peering LANs above, ordered as the source ranks them: the most-connected participants first. One row per recorded address, so a network running dual-stack appears once for its IPv4 interface and once for its IPv6 one.
| AS | Network | Address | rDNS | Policy |
|---|---|---|---|---|
| AS6939 | Hurricane Electric LLC | 185.1.27.63 | he.sox.rs | Open |
| AS6939 | Hurricane Electric LLC | 2001:7f8:1e::63 | he.sox.rs | Open |
| AS57463 | NetIX Communications JSC | 185.1.27.105 | 105.sox.rs | Selective |
| AS13335 | Cloudflare, Inc. | 2001:7f8:1e::61 | cloudflare.sox.rs | Open |
| AS13335 | Cloudflare, Inc. | 185.1.27.61 | cloudflare.sox.rs | Open |
| AS31500 | Global Network Management Inc | 185.1.27.39 | globalnet.sox.rs | Selective |
| AS31500 | Global Network Management Inc | 2001:7f8:1e::39 | — | Selective |
| AS9009 | M247 Europe SRL | 185.1.27.77 | m247.sox.rs | Selective |
| AS9009 | M247 Europe SRL | 2001:7f8:1e::77 | m247.sox.rs | Selective |
| AS36236 | NetActuate, Inc | 2001:7f8:1e::6 | — | — |
| AS50263 | A-Systems Sp. z o.o. | 2001:7f8:1e::79 | — | Open |
| AS50263 | A-Systems Sp. z o.o. | 185.1.27.79 | 79.sox.rs | Open |
| AS199524 | G-Core Labs S.A. | 185.1.27.32 | g-core.sox.rs | — |
| AS199524 | G-Core Labs S.A. | 2001:7f8:1e::32 | g-core.sox.rs | — |
| AS34224 | Neterra Ltd. | 185.1.27.25 | neterra.sox.rs | — |
| AS139341 | ACE | 185.1.27.133 | 133.sox.rs | — |
| AS6204 | INTERKVM HOST SRL | 2001:7f8:1e::130 | — | Selective |
| AS6204 | INTERKVM HOST SRL | 185.1.27.130 | 130.sox.rs | Selective |
| AS31287 | IPACCT CABLE Ltd | 2001:7f8:1e::26 | ipacct.sox.rs | Open |
| AS31287 | IPACCT CABLE Ltd | 185.1.27.26 | ipacct.sox.rs | Open |
| AS31287 | IPACCT CABLE Ltd | 185.1.27.29 | ipacct.sox.rs | Open |
| AS31287 | IPACCT CABLE Ltd | 2001:7f8:1e::29 | ipacct.sox.rs | Open |
| AS8400 | TELEKOM SRBIJA a.d. | 2001:7f8:1e::38 | telekom-srbija.sox.rs | Selective |
| AS8400 | TELEKOM SRBIJA a.d. | 185.1.27.38 | telekom.sox.rs | Selective |
| AS42 | WoodyNet, Inc. | 185.1.27.75 | pch-1.sox.rs | Open |
| AS42 | WoodyNet, Inc. | 2001:7f8:1e::75 | pch.sox.rs | Open |
| AS42473 | Anexia Cloud Solutions GmbH | 185.1.27.19 | verat.sox.rs | — |
| AS42473 | Anexia Cloud Solutions GmbH | 2001:7f8:1e::19 | — | — |
| AS9119 | SOFTNET d.o.o. | 185.1.27.48 | softnet.sox.rs | Open |
| AS9119 | SOFTNET d.o.o. | 2001:7f8:1e::48 | softnet.sox.rs | Open |
| AS396986 | Bytedance Inc. | 2001:7f8:1e::127 | — | Selective |
| AS396986 | Bytedance Inc. | 185.1.27.137 | 137.sox.rs | Selective |
| AS396986 | Bytedance Inc. | 2001:7f8:1e::137 | — | Selective |
| AS396986 | Bytedance Inc. | 185.1.27.127 | 127.sox.rs | Selective |
| AS15169 | Google LLC | 185.1.27.120 | google2.sox.rs | Selective |
| AS15169 | Google LLC | 2001:7f8:1e::60 | google.sox.rs | Selective |
| AS15169 | Google LLC | 185.1.27.60 | google.sox.rs | Selective |
| AS15169 | Google LLC | 2001:7f8:1e::120 | google.sox.rs | Selective |
| AS32934 | Facebook, Inc. | 185.1.27.67 | fb-meta.sox.rs | Selective |
| AS32934 | Facebook, Inc. | 2001:7f8:1e::67 | facebook-meta.sox.rs | Selective |
| AS63293 | Facebook, Inc. | 185.1.27.88 | facebook-cdn.sox.rs | Selective |
| AS63293 | Facebook, Inc. | 2001:7f8:1e::88 | facebook-cdn.sox.rs | Selective |
| AS24940 | Hetzner Online GmbH | 2001:7f8:1e::124 | — | Open |
| AS24940 | Hetzner Online GmbH | 185.1.27.124 | 124.sox.rs | Open |
| AS8674 | Netnod AB | 2001:7f8:1e::64 | I-root.sox.rs | Open |
| AS8674 | Netnod AB | 185.1.27.50 | 50.sox.rs | — |
| AS8674 | Netnod AB | 185.1.27.64 | i-root.sox.rs | Open |
| AS8674 | Netnod AB | 2001:7f8:1e::50 | I-root.sox.rs | — |
| AS31042 | Yettel d.o.o. | 185.1.27.57 | sbb.sox.rs | Open |
| AS31042 | Yettel d.o.o. | 2001:7f8:1e::37 | sbb.sox.rs | — |
| AS31042 | Yettel d.o.o. | 185.1.27.37 | sbb.sox.rs | Open |
| AS32590 | Valve Corporation | 2001:7f8:1e::119 | — | Open |
| AS32590 | Valve Corporation | 2001:7f8:1e::59 | valve.sox.rs | Open |
| AS32590 | Valve Corporation | 185.1.27.119 | 119.sox.rs | Open |
| AS32590 | Valve Corporation | 185.1.27.59 | valve.sox.rs | Open |
| AS15958 | CETIN Ltd. Belgrade | 185.1.27.45 | telenor.sox.rs | Selective |
| AS15958 | CETIN Ltd. Belgrade | 2001:7f8:1e::45 | cetin.sox.rs | Selective |
| AS25152 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | 2001:7f8:1e::58 | K-root.sox.rs | — |
| AS25152 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) | 185.1.27.58 | k-root.sox.rs | — |
| AS13004 | Serbian Open Exchange DOO | 2001:7f8:1e::1 | sox-1.sox.rs | Open |
| AS13004 | Serbian Open Exchange DOO | 185.1.27.5 | sox-3.sox.rs | Open |
| AS13004 | Serbian Open Exchange DOO | 2001:7f8:1e::5 | sox-3.sox.rs | Open |
| AS13004 | Serbian Open Exchange DOO | 2001:7f8:1e::12 | sw-thq-cisco.sox.rs | — |
| AS13004 | Serbian Open Exchange DOO | 185.1.27.1 | sox-1.sox.rs | Open |
| AS13004 | Serbian Open Exchange DOO | 185.1.27.12 | 12.sox.rs | — |
| AS34772 | NEOTEL AD Skopje | 185.1.27.84 | 84.sox.rs | — |
| AS43061 | Stelkom d.o.o. | 185.1.27.36 | stelkom.sox.rs | Open |
| AS43061 | Stelkom d.o.o. | 2001:7f8:1e::36 | stelkom.sox.rs | Open |
| AS26415 | VeriSign Global Registry Services | 185.1.27.56 | j-root.sox.rs | Open |
| AS26415 | VeriSign Global Registry Services | 2001:7f8:1e::56 | — | Open |
| AS3856 | Packet Clearing House, Inc. | 2001:7f8:1e::76 | pch.sox.rs | Open |
| AS3856 | Packet Clearing House, Inc. | 185.1.27.76 | pch-2.sox.rs | Open |
| AS9125 | Drustvo za telekomunikacije Orion telekom doo Beograd-Zemun | 185.1.27.23 | orion.sox.rs | Open |
| AS9125 | Drustvo za telekomunikacije Orion telekom doo Beograd-Zemun | 2001:7f8:1e::86 | orion.sox.rs | Open |
| AS9125 | Drustvo za telekomunikacije Orion telekom doo Beograd-Zemun | 185.1.27.86 | orion.sox.rs | Open |
| AS9125 | Drustvo za telekomunikacije Orion telekom doo Beograd-Zemun | 2001:7f8:1e::23 | orion.sox.rs | Open |
| AS21215 | UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd | 2001:7f8:1e::122 | — | Selective |
| AS21215 | UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd | 185.1.27.121 | 121.sox.rs | Selective |
| AS21215 | UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd | 185.1.27.122 | 122.sox.rs | Selective |
| AS21215 | UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd | 2001:7f8:1e::121 | — | Selective |
| AS215120 | Evolus IT Solutions GmbH | 2001:7f8:1e::4 | — | — |
| AS42385 | Join-stock company "Internet Exchange"MSK-IX" | 2001:7f8:1e::118 | — | — |
| AS42385 | Join-stock company "Internet Exchange"MSK-IX" | 185.1.27.118 | 118.sox.rs | — |
| AS2614 | Agentia de Administrare a Retelei Nationale de Informatica pentru Educatie si Cercetare | 185.1.27.4 | 4.sox.rs | — |
| AS112 | DNS-OARC | 185.1.27.109 | as112.sox.rs | — |
| AS20144 | ICANN | 2001:7f8:1e::47 | L-root.sox.rs | Selective |
| AS20144 | ICANN | 185.1.27.47 | l-root.sox.rs | Selective |
| AS29687 | Geodim Ltd. | 185.1.27.6 | 6.sox.rs | — |
| AS41494 | Asociatia Interlan | 185.1.27.98 | 98.sox.rs | — |
| AS200736 | MEDIANET INVEST AE | 185.1.27.108 | rtr-108.sox.rs | — |
| AS60592 | Gransy s.r.o. | 185.1.27.85 | gransy.sox.rs | Open |
| AS60230 | Neterra Ltd. | 2001:7f8:1e::62 | — | — |
| AS60230 | Neterra Ltd. | 185.1.27.62 | netix.sox.rs | — |
| AS44882 | Vsevnet Ltd. | 2001:7f8:1e::108 | — | — |
| AS6700 | TELEKOM SRBIJA a.d. | 2001:7f8:1e::17 | beotel.sox.rs | Open |
| AS6700 | TELEKOM SRBIJA a.d. | 185.1.27.17 | beotel.sox.rs | Open |
| AS44143 | A1 Srbija d.o.o. Beograd | 185.1.27.34 | a1.sox.rs | Open |
| AS44143 | A1 Srbija d.o.o. Beograd | 2001:7f8:1e::34 | a1.sox.rs | Open |
| AS60733 | ZORAN PEROVIC trading as Agencija Perke.NET | 2001:7f8:1e::24 | perke-net.sox.rs | Open |
| AS60733 | ZORAN PEROVIC trading as Agencija Perke.NET | 185.1.27.24 | lopatar.perke.net | Open |
| AS213306 | Comtrade System Integration doo Belgrade Serbia | 185.1.27.94 | comtrade1.sox.rs | — |
| AS213306 | Comtrade System Integration doo Belgrade Serbia | 185.1.27.96 | comtrade3.sox.rs | — |
| AS213306 | Comtrade System Integration doo Belgrade Serbia | 185.1.27.113 | comtrade6.sox.rs | — |
| AS12459 | NETOPS B.V. | 185.1.27.83 | united-internet.sox.rs | Selective |
| AS12459 | NETOPS B.V. | 2001:7f8:1e::83 | united-internet.sox.rs | Selective |
| AS51859 | Mainstream doo Beograd | 2001:7f8:1e::51 | mainstream.sox.rs | Open |
| AS51859 | Mainstream doo Beograd | 185.1.27.72 | beonet.sox.rs | — |
| AS51859 | Mainstream doo Beograd | 185.1.27.82 | mainstream.sox.rs | Open |
| AS51859 | Mainstream doo Beograd | 2001:7f8:1e::82 | mainstream.sox.rs | Open |
| AS51859 | Mainstream doo Beograd | 185.1.27.51 | mainstream-telenor-2.sox.rs | Open |
| AS205201 | Public Service Media Radio Television of Serbia | 185.1.27.81 | 81.sox.rs | — |
| AS41897 | Sat-Trakt D.O.O. | 2001:7f8:1e::33 | sat-trakt.sox.rs | — |
| AS41897 | Sat-Trakt D.O.O. | 185.1.27.33 | sat-trakt.sox.rs | — |
| AS47267 | Serbian National Internet Domain Registry Foundation | 185.1.27.27 | rnids.sox.rs | — |
| AS47267 | Serbian National Internet Domain Registry Foundation | 2001:7f8:1e::27 | rnids.sox.rs | — |
| AS47734 | Telecom IT Solutions SRL | 185.1.27.80 | 80.sox.rs | — |
| AS47734 | Telecom IT Solutions SRL | 2001:7f8:1e::80 | — | — |
| AS198371 | NINET Company Nis d.o.o. | 185.1.27.69 | ninet.sox.rs | Open |
| AS198371 | NINET Company Nis d.o.o. | 185.1.27.78 | ninet.sox.rs | — |
| AS198371 | NINET Company Nis d.o.o. | 2001:7f8:1e::69 | ninet.sox.rs | Open |
| AS198371 | NINET Company Nis d.o.o. | 2001:7f8:1e::70 | ninet.sox.rs | Open |
| AS198371 | NINET Company Nis d.o.o. | 185.1.27.70 | ninet.sox.rs | Open |
| AS198691 | SPACE Admins d.o.o. | 185.1.27.42 | 42.sox.rs | — |
| AS198691 | SPACE Admins d.o.o. | 185.1.27.31 | spaceadmins.sox.rs | — |
| AS205620 | Unicom-Telecom d.o.o. | 185.1.27.73 | unicom.sox.rs | — |
| AS205620 | Unicom-Telecom d.o.o. | 185.1.27.104 | unicom.sox.rs | — |
| AS211612 | Datacamp Limited | 2001:7f8:1e::110 | cdn77-cache.sox.rs | — |
| AS211612 | Datacamp Limited | 185.1.27.110 | cdn77.sox.rs | — |
| AS211612 | Datacamp Limited | 185.1.27.111 | cdn77.sox.rs | — |
| AS211612 | Datacamp Limited | 2001:7f8:1e::111 | cdn77-cache.sox.rs | — |
| AS25431 | Gama Electronics d.o.o. | 185.1.27.65 | gama.sox.rs | Open |
| AS35779 | mCloud doo | 185.1.27.89 | mCloud.sox.rs | — |
| AS34565 | TurkIX Communications Ltd. | 185.1.27.129 | 129.sox.rs | Open |
| AS34565 | TurkIX Communications Ltd. | 2001:7f8:1e::129 | — | Open |
| AS39311 | Mainstream doo Beograd | 185.1.27.18 | cri.sox.rs | — |
| AS47479 | Orion Telekom Tim d.o.o.Beograd | 185.1.27.93 | orion-streaming.sox.rs | — |
| AS50872 | LOCALHOST d.o.o. | 185.1.27.91 | 91.sox.rs | — |
| AS203572 | Ingram Micro d.o.o. Beograd | 185.1.27.115 | 115.sox.rs | — |
| AS203572 | Ingram Micro d.o.o. Beograd | 185.1.27.116 | 116.sox.rs | — |
| AS13303 | University of Nis | 185.1.27.52 | junis.sox.rs | Open |
| AS13303 | University of Nis | 2001:7f8:1e::52 | junis.sox.rs | Open |
| AS41937 | TELEKOM SRBIJA a.d. | 2001:7f8:1e::28 | supernova.sox.rs | Open |
| AS41937 | TELEKOM SRBIJA a.d. | 185.1.27.28 | radijus.sox.rs | Open |
| AS205313 | INSPIRA GRUPA DOO SUBOTICA | 185.1.27.99 | infostud.sox.rs | — |
| AS216053 | Data Cloud Technology d.o.o Kragujevac | 185.1.27.66 | 66.sox.rs | — |
| AS6447 | UNIV OF OREGON | 185.1.27.49 | route-view.sox.rs | Selective |
| AS6447 | UNIV OF OREGON | 2001:7f8:1e::49 | routeview.sox.rs | Selective |
| AS6447 | UNIV OF OREGON | 185.1.27.178 | — | — |
| AS212232 | Port 179 LTD | 185.1.27.114 | ben-cox.sox.rs | Open |
| AS212232 | Port 179 LTD | 2001:7f8:1e::114 | ben-cox.sox.rs | Open |
| AS215233 | INET SYS CONSORTIUM INC. | 2001:7f8:1e::117 | — | Open |
| AS215233 | INET SYS CONSORTIUM INC. | 185.1.27.117 | 117.sox.rs | Open |
| AS397601 | LOGICMONITOR, INC. | 2001:7f8:1e::40 | catchpoint.sox.rs | Open |
| AS397601 | LOGICMONITOR, INC. | 185.1.27.40 | catchpoint.sox.rs | Open |
Peering policy is what the network declared to PCH, not something anyone verified, and an open policy is an invitation rather than a commitment. Absence of a network here means PCH has no record of it at this exchange, not that it is not present.
Provenance
Where this comes from
- Full record at Packet Clearing House — the upstream this page is built from, with the traffic graphs and the complete participant list.
- The exchange's own site — joining terms, port pricing and the route servers, which no directory carries.
Exchange records come from the directory collected 2026-08-08 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,137 recorded member addresses, licensed CC BY-NC-SA 3.0.
This is a snapshot, not a live view. Members join and leave continuously, and the figures above are what PCH had on file on the collection date. PeeringDB is the better-known directory and is deliberately not the source here: its acceptable-use policy forbids the bulk storage this needs. The two answer different questions anyway. PeeringDB reports what an operator declares about itself; this reports what PCH has recorded.