Carrier-Grade DNS for Telecom Operators and ISPs

A carrier-grade caching DNS server — and the team that runs it. Better quality of experience (QoE) for your subscribers, lower total cost of ownership (TCO) for you.

Nameto builds and operates DNS for organizations that sell internet access: mobile operators, broadband providers, and ISPs. At the core is Nameto CNS, our carrier-grade caching DNS server, built for large subscriber bases — where DNS speed and availability directly shape how fast the internet feels.

We deliver more than software. Nameto takes responsibility for how the DNS service performs in your live network — deployment, tuning, and day-to-day operation, up to running the resolver service entirely on your behalf. Your engineers stop firefighting DNS; your TCO reflects it.

Nameto CNS integrates into your existing infrastructure without an architecture redesign. It runs on the commodity servers you already have and can replace your existing resolvers behind the same service addresses, including anycast deployments.

Mobile operators, major broadband providers, and other subscriber-focused companies use Nameto to cut DNS costs, resolve incidents faster, and improve QoE. Many of these customer relationships have lasted more than a decade.

Nameto CNS

The caching DNS server built for carrier networks.

A caching DNS server — a recursive resolver — answers subscribers’ queries and stores the results, so repeated lookups are served from cache instead of crossing the internet again. In an operator network, it is the component that most directly determines how fast the internet feels. Nameto CNS is that component, built for carrier traffic — high sustained query volumes and large subscriber bases — and designed for years of continuous operation.

General-purpose open-source resolvers can be run at carrier scale, but doing so takes real engineering effort: tuning, capacity planning, monitoring, and around-the-clock expertise. Nameto CNS is purpose-built for operator traffic and is delivered with that expertise included — when the resolver misbehaves, that is our problem to fix, not yours.

What you get:

– Carrier scale. In production, Nameto CNS serves subscriber bases of tens of millions of users.

– Your hardware. Runs on standard commodity servers — no proprietary appliances, no procurement lead times.

– Fast where it counts. Engineered for consistently low resolution latency — including the slow percentiles that averages hide.

– Cache defenses. Hardened against attacks on the resolver cache, from cache poisoning to abusive query floods.

– Policy engine. Control how specific queries are answered — the foundation for customized and differentiated DNS services.

Because Nameto CNS runs inside your network, close to your subscribers, it answers with lower round-trip latency than off-net public resolvers such as Google Public DNS can offer — and it keeps CDN traffic mapped to the caches nearest your users. When your own DNS is the fastest option, subscribers have no reason to switch to third-party resolvers: DNS traffic, visibility, and control stay inside your network.

CNS is straightforward to deploy and operate, and we take responsibility for how it performs in your production network. Faster resolution, fewer incidents, full accountability — DNS your subscribers never have to think about.

DNS QoE Assurance Service

See how your DNS actually performs.

For most operators, DNS is a black box: server-side dashboards say everything is fine, while subscribers hit slow pages and intermittent failures the counters never register. The DNS QoE Assurance Service analyzes real traffic captures (pcap) from your resolvers and shows how the service behaves from the subscriber’s point of view.

The analysis covers:

– Performance — response-time distributions with tail percentiles (p95/p99), not just averages, plus resolution outcomes, unanswered queries, and client retries.

– Quality — where latency and failures actually come from, with concrete recommendations.

– Security observations — traffic-level indicators of abuse and exposure, from attack floods to anomalous client behavior.

– Trend tracking — repeat the analysis to confirm that changes actually improved the service.

Averages hide what subscribers feel. Get the evidence: get your free DNS report.

Get DNS Report!

DNS Support

Support from engineers who run carrier DNS

When DNS misbehaves, subscribers feel it immediately — and every minute of diagnosis counts. Nameto’s DNS infrastructure support puts experienced DNS specialists at your side, from urgent troubleshooting to configuration reviews.

– Expert access. Technical questions answered by DNS specialists.

– Fast incident resolution. Rapid identification and repair of problems to minimize downtime.

– Configuration guidance. Concrete recommendations to improve resolver performance and security.

– 24/7 availability. Round-the-clock support, across time zones and urgency levels.

When DNS breaks at 3 a.m., you are not troubleshooting it alone.

Use case 1 — Replacing failing open-source resolvers, no architecture change — Use case #1

Challenge — Use case #1

A major telecom operator ran its caching DNS on open-source software across sites in twenty cities, with redundancy provided by IP anycast. But anycast only protects against node failures: under specific traffic patterns the resolver software itself failed — on every node running the same code — and large numbers of subscribers lost name resolution.

Solution — Use case #1

Nameto proposed a software cutover, not a rebuild: replace the resolver software with Nameto CNS on the same standard hardware, keeping the existing anycast design and addressing untouched. Once the operator agreed, the sites were migrated to Nameto CNS.

Result — Use case #1

The outages stopped. Since the migration, the resolver layer has run without disruptions or subscriber-affecting incidents. On the strength of that result, the operator moved its mobile division’s DNS traffic to Nameto as well — and gained a DNS platform it no longer has to think about.

Use case 2 — Six months to capacity exhaustion, solved in software — Use case #2

Challenge — Use case #2

A national mobile operator had watched DNS load climb in one of its regions for years. Its planning team forecast that within six months, load would exceed the maximum throughput of the region’s DNS infrastructure. Incumbent equipment suppliers, hit by supply-chain disruptions, quoted eight months just to ship new hardware — the capacity wall would arrive before the boxes did.

Solution — Use case #2

The operator brought the problem to Nameto. Nameto CNS was deployed as software on commodity servers the operator already had in place — no new equipment, no delivery lead times, no changes to the network design.

Result — Use case #2

Throughput grew by orders of magnitude — on the same hardware footprint. Satisfied with the performance and reliability of the software, the operator signed a long-term agreement extending Nameto CNS to five more regions.

Use case 3 — From chronic DNS incidents to a few questions a year — Use case #3

Challenge — Use case #3

At a large telecom operator, no single team owned DNS. Every incident turned into a debate over whether the cause was software, hardware, or the network — so problems dragged on, recurred, and multiplied, while subscriber satisfaction fell.

Solution — Use case #3

Nameto deployed CNS on the operator’s existing commodity servers and added a consulting engagement: new diagnostic procedures and a clear, restructured ownership model for the DNS service — with Nameto accountable for the resolver layer itself.

Result — Use case #3

Incidents dropped to a few per year — and none of them are failures. They are routine questions from teams learning how DNS works in the new setup. The operator now treats the performance and reliability of its DNS platform as a given.

Use case 4 — Cloud-style DNS services on the operator’s own platform — Use case #4

CHALLENGE — Use case #4

A data-center operator was losing business: customers were asking for cloud-style DNS services its existing platform could not deliver. With limited flexibility and no full-featured management API, it had no way to provision customized DNS per client.

SOLUTION — Use case #4

The operator deployed Nameto CNS, and Nameto worked with its team on a service design for its customers’ specific requirements. With the CNS API, the operator could rapidly provision tailored DNS services for its clients, including enterprises and telecom operators.

RESULT — Use case #4

The CNS API integrated directly with the operator’s existing provisioning systems and streamlined the rollout of new DNS services. The operator now offers DNS capabilities its competitors don’t — DNS went from a limitation to a differentiator.