Chennai · India
PeeringDB records five internet exchanges in Chennai and 19 colocation facilities, with 230 exchange participants and 367 network presences in those facilities. Extreme IX Chennai is the best connected at 92 participants, ahead of DE-CIX Chennai and NIXI Chennai. An address that geolocates to Chennai names the network announcing it rather than the position of any device.
Internet exchanges in Chennai
An exchange is a shared switch where networks hand traffic to each other directly. Participant counts come from PeeringDB, where each network maintains its own record.
| Exchange | Participants | Registry carriers peering |
|---|---|---|
Extreme IX Chennai ExtremeIX Chennai | 92 | |
DE-CIX Chennai | 77 | |
NIXI Chennai National Internet eXchange of India | 57 | |
REDIX Chennai | 2 | none in the registry |
MX-IX Chennai | 2 | none in the registry |
Exchange records: PeeringDB.
Colocation facilities
Buildings where networks put equipment. The network count is how many PeeringDB members list a presence there, which shows where capacity in the city sits.
| Facility | Networks present | Address |
|---|---|---|
| Bharti Airtel Santhome | 89 | Bharti Towers 101 Santhome High Road |
| TATA Communications Chennai | 81 | 4th floor, 2nd block |
| Sify Tidel-DC- Chennai | 60 | Sify Technologies Limited II Floor, TIDEL Park, No.4, Canal Bank Road, Taramani |
| STT Chennai 1 | 43 | 4, Swami Sivananda Salai |
| Nxtra Data Chennai DC 1 | 19 | Plot No: F8, SIPCOT IT Park Siruseri, Navallur, Kancheepuram Distt |
| CtrlS Chennai DC2 | 13 | 20, 3rd Main Rd, Old Ambattur, Sai Nagar, Ambattur Industrial Estate, |
| Reliance Chennai IDC | 11 | Reliance Communications Infrastructure Limited, Reliance House, No-6, Haddows Road, Nungambakkam, Chennai, India - 600006 |
| Netmagic Chennai | 11 | 67, Mathiravedu Velappanchavadi Poonamallee high road |
| STT Chennai 2 | 7 | 226, Red Hills Road, Kallikuppam, Ambattur |
| Nxtra Data Chennai DC 2 | 7 | A32& A33,3rd cross street, First Cross Road, Siruseri SIPCOT IT Park |
| CtrlS Chennai DC1 | 7 | 20, 3rd Main Rd, Old Ambattur, Sai Nagar, Ambattur Industrial Estate |
| Powergrid Chennai | 5 | Terrace Level-II, Block-A South Tidel Park |
Showing the 12 facilities with the most networks, of 19 recorded.
What a Chennai IP address tells you
Chennai splits its weight between exchange fabric and colocation, and the colocation side is heavier. Extreme IX Chennai lists 92 participants, DE-CIX Chennai 77 and NIXI Chennai 57, with REDIX Chennai and MX-IX Chennai at two each, for 230 in total. Facilities hold 367 network presences over 19 sites, with Bharti Airtel Santhome at 89 networks, TATA Communications Chennai at 81 and Sify Tidel-DC- Chennai at 60. One carrier ASN, AS4637, is recorded on all three of the bigger exchanges, so the same carrier network appears on every fabric that has real membership here.
An address that geolocates to Chennai is an address an operator registered to Chennai. The announcement comes from a prefix record, and that record holds an administrative address, which is often a head office rather than the site the traffic passes through. Mobile networks in India push subscriber traffic out through a limited set of gateways, so a phone connected somewhere else in Tamil Nadu or beyond can carry an address published as Chennai. Geolocation vendors read the same published record and repeat it.
Checking the origin ASN tells you more than the city string. Pull the prefix, read the netname and the registered organisation, and note whether the announcing network is one of the mobile ASNs, a broadband provider or a hosting network inside a Chennai facility. A member of Extreme IX Chennai sitting among 92 participants routes differently from a network whose only footprint is a rack in one of the 19 sites. Treat the city field as a claim to verify against routing data.
Questions
Which internet exchanges are in Chennai?
Five. Extreme IX Chennai has 92 participants, DE-CIX Chennai 77 and NIXI Chennai 57, while REDIX Chennai and MX-IX Chennai record two each. Together they account for 230 participants, which is under a quarter of what PeeringDB records for Mumbai.
Do India mobile carriers peer in Chennai?
One carrier ASN, AS4637, is recorded on Extreme IX Chennai, DE-CIX Chennai and NIXI Chennai. No other carrier ASN appears against a Chennai exchange in this snapshot, and the registry does not name which mobile operators are present beyond that single number.
Does an IP that geolocates to Chennai mean the device is there?
No. The city comes from the operator's own registration for the address block, and geolocation databases follow that record. A mobile address published as Chennai can belong to a handset anywhere the operator serves, because the traffic leaves through a small number of gateways.
Sources
- PeeringDB - exchanges, participant counts, facilities and network presence, snapshot 2026-09-07
- PROXIES.SX carrier and ASN registry - operator ASNs used to match peering participants