Website Availability in Mexico
Submarine cables, ISP health and blocking risks that decide whether a website loads in Mexico. Checked against live measurement data.
Wondering whether a website is down for everyone or just unreachable from Mexico? The answer usually hides in the physical layer of the internet. Mexico 🇲🇽 connects to the global network through 12 submarine cable systems that come ashore at 14 landing stations, and its national domain zone is .mx. Every request from a user in Mexico to a foreign server, and every request from abroad to a site hosted in Mexico, physically travels over these systems or their terrestrial backhaul.
This page summarizes what our measurement network knows about internet connectivity in Mexico: which cables serve the country, how its leading internet providers are performing, and what can make a website appear offline for users there while it works everywhere else.
Current connectivity status in Mexico
As of our latest hourly measurement cycle, the national internet signal of Mexico is operating normally (BGP visibility and active probing dip: 0% against the 24-hour baseline). National-level signals catch large events; an individual website can still be unreachable for local reasons, which is what the availability checker above is for.
Connectivity for most users in Mexico is provided by a small group of networks:
| Provider | ASN | Share of users | Status |
|---|---|---|---|
| AS8151 - UNINET | AS8151 | 34.1% | No recent anomaly |
| AS13999 - Mega Cable, S.A. de C.V. | AS13999 | 15.1% | No recent anomaly |
| AS17072 - TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. DE C.V. | AS17072 | 14.7% | No recent anomaly |
| AS28548 - Cablevision, S.A. de C.V. | AS28548 | 6.6% | No recent anomaly |
| AS28403 - RadioMovil Dipsa, S.A. de C.V. | AS28403 | 4.9% | No recent anomaly |
If a website fails to load only for customers of one of these providers, the problem is almost always local: DNS resolution inside that network, ISP-level filtering, or a routing issue, rather than the website itself being down.
Submarine cables that connect Mexico to the internet
The following systems land in Mexico. Cable length is a rough proxy for how much of the world a system reaches: long trunks connect continents, short ones link neighbors. Our monitors registered 1 latency anomalies on cables serving Mexico in the last 30 days.
| Cable system | Length | In service since |
|---|---|---|
| Bifrost | 19,888 km | 2025 |
| America Movil Submarine Cable System-1 (AMX-1) | 17,800 km | 2014 |
| Pan-American Crossing (PAC) | 10,000 km | 2000 |
| ARCOS | 8,704 km | 2001 |
| TAM-1 | 7,200 km | 2026 |
| MANTA | 5,600 km | 2028 |
| Carnival Submarine Network-1 (CSN-1) | 4,670 km | 2026 |
| TIKAL-AMX3 | 1,935 km | 2026 |
| TMX5 | 383 km | 2025 |
| Lazaro Cardenas-Manzanillo Santiago Submarine Cable System (LCMSSCS) | 322 km | 2013 |
| Gulf of California Cable | 250 km | 2019 |
| Ixchel | 20 km | 2007 |
How resilient is Mexico to cable failures?
With 12 cable systems across 14 landing stations, Mexico has a well diversified set of routes. A single cable fault is usually absorbed by the remaining systems, although latency to some regions can temporarily increase. Repairs at sea typically take one to several weeks, because a specialized cable ship has to locate the fault, lift the cable and splice it on deck.
Why a website may not load in Mexico
When a site works in other countries but fails in Mexico, the usual suspects are, in order of likelihood: a DNS problem inside a local ISP, a content delivery network misrouting users in Mexico to an unhealthy edge node, a routing or peering issue between local networks and the site's host, and finally a submarine cable incident affecting the whole region.
Our DNS measurements have not flagged systematic national filtering in Mexico, although individual ISPs and corporate networks can still block specific resources.
Neighbors on the same cables
These countries share submarine cable systems with Mexico, so a major cable incident can affect them together:
🇺🇸 United States (8 shared) · 🇧🇷 Brazil (1 shared) · 🇵🇭 Philippines (1 shared) · 🇮🇩 Indonesia (1 shared) · 🇸🇬 Singapore (1 shared)
See the full list on the website availability by country hub.
Frequently asked questions
How do I check if a website is down in Mexico?
Enter the URL into the free Global Availability Checker on this site. It compares measurement data from 80+ countries, including probes relevant to Mexico, and shows in seconds whether the site is down everywhere or only unreachable from specific regions.
How many submarine cables connect Mexico?
Mexico is served by 12 submarine cable systems landing at 14 coastal stations. The longest systems are Bifrost, America Movil Submarine Cable System-1 (AMX-1), Pan-American Crossing (PAC).
Why does a website work in other countries but not in Mexico?
The most common causes are DNS failures inside a local ISP, CDN edge problems, routing issues between Mexico and the hosting network, national filtering, and submarine cable faults. Testing the URL from multiple countries immediately narrows down which one it is.
Who are the largest internet providers in Mexico?
The leading networks by user share are AS8151 - UNINET, AS13999 - Mega Cable, S.A. de C.V., AS17072 - TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. DE C.V.. Together they carry the majority of consumer traffic, so a problem inside any of them affects a large share of users in Mexico.
Can a single cable failure disconnect Mexico?
Very unlikely. A single fault is absorbed by the remaining 12 systems, though latency may rise.
Does Mexico block websites?
We have not detected systematic national filtering in Mexico, but individual ISPs and corporate networks can still block specific sites.
Data: GeoCables submarine cable telemetry, RIPE Atlas measurements, IODA national signals, APNIC user estimates. Numbers refresh automatically; last update July 11, 2026.