Salt · Switzerland
Salt is a mobile network operator in Switzerland, owned through holding entities by NJJ, the private holding venture of Xavier Niel, via Matterhorn Telecom Holding S.A. Its mobile network is carried by AS15796, registered to Salt Mobile SA. The registry records one MCC/MNC pair for Salt, 228-03.
Autonomous systems
Holder names and prefix counts come from the RIPE NCC's RIPEstat Data API, fetched on 2026-09-06. Role and confidence come from the evidence linked in each row; "confirmed" means a PeeringDB or RIPEstat record, or the operator's own site, names the operator.
Mobile network codes
The MCC identifies the country and the MNC identifies the operator inside it. Together they appear in the IMSI of every SIM on the network and in device diagnostics; they are how a handset knows which network it is on.
About Salt
The registry records one ASN for Salt, AS15796, held by Salt Mobile SA and documented as the mobile network. At the last probe the ASN was announced and originated 2 IPv4 prefixes against 1 IPv6 prefix, a small routed footprint by prefix count. PeeringDB names the network SALT MOBILE and files it under Cable/DSL/ISP. RIPE holds the aut-num against organisation ORG-OCS1-RIPE, and Salt peers at SwissIX, Equinix, CIXP and DE-CIX.
An address whose origin ASN is AS15796 is routed by Salt, and the registry documents that ASN as carrying the mobile network, so a mobile connection is the expected reading. The announced prefix count is low, so a Swiss address outside those announcements belongs to another operator rather than Salt. Salt runs 4G LTE and 5G. The registry holds no second Salt ASN, so there is no separate fixed or enterprise range to tell apart from the mobile one.
Research note. AS15796 RIPEstat holder 'SALT-CH Salt Mobile SA', announced=true; RIPE aut-num org ORG-OCS1-RIPE, peering contact CoreIPTeam@salt.ch, present at SwissIX/Equinix/CIXP/DE-CIX. PeeringDB API throttled (429) on every attempt for this ASN, so no PeeringDB record was read. Wikipedia infobox also lists ASN 15796 and NJJ Holding as parent. Ownership quote from Matterhorn Telecom Holding SA Annual Report 2024 p.43: 'Salt Mobile SA ("Salt") is owned, through one or more holding entities, by NJJ. NJJ was established in 2010 as the private holding venture of Xavier Niel'. salt.ch/en/network: '99.9% of the Swiss population is covered by our powerful 4G network' and 'In areas with 4G and 5G+ coverage ... up to 1.7 Gbit/s'. mcc-mnc.org 228-03 has 3G/4G bands on record, 5G not on record there.
Checking whether an IP belongs to Salt
Look up the origin ASN of the address and compare it with the table above. RIPEstat answers for any address, and the RADB whois mirror lists the routes registered under an ASN.
curl -s "https://stat.ripe.net/data/prefix-overview/data.json?resource=203.0.113.9" | jq '.data.asns'whois -h whois.radb.net -- '-i origin AS15796' | grep ^routeQuestions
What is Salt's ASN?
The registry records one ASN for Salt, AS15796, whose RIPE holder name is SALT-CH Salt Mobile SA. It is documented as the ASN carrying Salt's mobile network, it was announced at the last probe, and PeeringDB lists it as SALT MOBILE under the Cable/DSL/ISP type.
What is the MCC/MNC of Salt?
Salt uses MCC 228, the country code for Switzerland, with MNC 03, so the full code is 228-03. The registry records no other MCC/MNC pair for Salt. mcc-mnc.org has 3G and 4G bands on record for 228-03, with no 5G entry there.
Is an IP from AS15796 a mobile IP?
Probably. AS15796 is the ASN the registry documents as carrying Salt's mobile network, so an address originating there is routed by a Swiss mobile operator. The ASN alone does not prove a given address sits on a handset connection, since an operator can route other services in the same space.
Sources
- https://www.salt.ch/en/network
- https://www.salt.ch/sites/default/files/2025-03/31.12.2024%20-%20Matterhorn%20Telecom%20Holding%20SA%20-%20Annual%20Report.pdf
- https://en.wikipedia.org/wiki/Salt_Mobile
- https://mcc-mnc.org/networks/228_03
- https://mcc-mnc.org/countries/switzerland
- https://stat.ripe.net/data/as-overview/data.json?resource=AS15796
- https://rest.db.ripe.net/ripe/aut-num/AS15796.json
- RIPEstat Data API (holder, announced prefixes)
- PeeringDB API (network records)