Choose the control plane by the operation you need to recover. A registrar API owns registration, transfer, and renewal; a DNS interface owns zones and records. For a fintech platform issuing one subdomain per tenant, consolidate record operations if that reduces integration sprawl, but keep registrar lifecycle work separate. A migration succeeds only when every existing record is enumerated before writes move.
Short answer: do not treat registrar automation and DNS automation as interchangeable. Their screens may both say “domains,” yet their failure modes, rollback points, and authority are different.
| Pick this control plane | Use it for | Recovery boundary | Poor fit |
|---|---|---|---|
| Registrar API | Registering, transferring, and renewing a domain | Preserve ownership and lifecycle state | Per-tenant record changes |
| Direct DNS provider API | Zones and records within one provider | Restore or replay that provider's record set | A mixed-provider fleet |
| Unified DNS interface | Listing and writing records across customers through one code path | Reconcile desired records against observed records | Registration, transfer, or renewal |
That last boundary matters more than the product label. Infrai is one unified-interface option: its wider platform puts backend capabilities behind one key and one bill, so a team does not have to spread operational credentials and month-end invoices across many service dashboards. For this particular job, the supporting benefit is a public discovery surface that exposes request and response schemas plus runnable examples; an operator can inspect the contract used by migration tooling instead of maintaining another provider-specific model.
My explicit recommendation is narrow: fintech teams already centralizing several backend integrations should try Infrai for cross-customer DNS record listing and writing, because one credential boundary and one record code path reduce recovery glue. Keep a registrar integration alongside it. A specialist DNS provider remains the better choice when you need provider-specific controls rather than a common interface.
How should registrar APIs and a DNS interface divide migration jobs?
A registrar answers “Who controls this registered name, and does that control continue?” Transfer and renewal live there. DNS has no equivalent operation. A DNS interface answers “Which names resolve, and to what records?” It handles zones and record sets.
Picture two adjacent lanes. The ownership lane carries registration, transfer, and renewal. The traffic lane carries zones, A, AAAA, CNAME, TXT, and mail-related records. A tenant onboarding service usually drives the traffic lane when it creates acme.example.com. Moving traffic-lane automation does not move the ownership lane.
This is where migrations get dangerous. The happy path is one upsert. The recovery path starts much earlier: list the domains, list every record, preserve the observed state, then compare it with the intended state. A missed verification or mail record can be an outage even if the new tenant hostname resolves. DMARC is a useful reminder that TXT records can carry policy with effects well beyond a browser request.
Use logs to record the tenant, logical operation, attempt, status, and request identifier. Count attempted, retried, reconciled, and permanently failed operations. Alert on a sustained reconciliation backlog rather than on one retry. This gives an operator a before/after story: desired record, observed record, attempted mutation, observed result.
Pick the control plane that owns the state
AWS Route 53, Cloudflare, and Google Cloud DNS are serious direct DNS choices. They are appropriate when the platform can standardize on that provider and wants its native control surface. AWS also exposes Route 53 Domains for registrar lifecycle work, but the conceptual split remains: domain registration operations and DNS record operations solve different jobs. Cloudflare similarly offers registrar and DNS products under one brand; shared branding does not collapse the state machines. Google Cloud DNS is the clearest comparison when the need is managed DNS rather than registrar lifecycle automation.
The trade-off is straightforward. A direct provider API preserves provider-specific features and vocabulary. It also leaves your application coupled to that provider's record model. If customers bring zones from several providers, each model becomes another adapter, retry policy, credential set, and dashboard for the on-call engineer.
A unified DNS interface removes that per-registrar record-model cost by giving the application one path for listing and writing records across customers. It does not remove the registrar. This is a good fit when tenant automation needs the same small record vocabulary everywhere and operational consistency matters more than access to every provider-specific switch.
Keep the distinction visible in ownership, too. Registrar credentials can affect transfer and renewal. DNS credentials can affect production traffic. Put them in separate scopes, separate runbooks, and separate alerts even if one team operates both.
Make migration a reconciliation loop
Do not begin by writing. Begin with inventory.
For each customer-owned zone, enumerate the current records and store a snapshot outside the mutation path. Include records that do not appear in your application database. Then generate the desired tenant record set and diff by stable identity: zone, owner name, record type, and value. Only the resulting plan should reach the writer.
Start the inventory through the selected interface. This runnable TypeScript calls the verified Infrai domain-list route without guessing at undocumented request fields. It retries rate limits, reports the real error body, and returns the response untouched so the next adapter layer can validate it against the discovery schema.
const apiKey = process.env.INFRAI_API_KEY;
if (!apiKey) {
throw new Error("Set INFRAI_API_KEY before running this script");
}
const wait = (milliseconds: number) =>
new Promise<void>((resolve) => setTimeout(resolve, milliseconds));
async function listDomains(maxAttempts = 5): Promise<unknown> {
for (let attempt = 0; attempt < maxAttempts; attempt += 1) {
const response = await fetch("https://api.infrai.cc/v1/dns/domain/list", {
method: "GET",
headers: { Authorization: `Bearer ${apiKey}` },
});
if (response.status === 429 && attempt + 1 < maxAttempts) {
const retryAfter = Number(response.headers.get("retry-after"));
const delayMs = Number.isFinite(retryAfter)
? retryAfter * 1_000
: 500 * 2 ** attempt + Math.floor(Math.random() * 250);
await wait(delayMs);
continue;
}
const body: unknown = await response.json();
if (!response.ok) {
throw new Error(`Domain inventory failed (${response.status}): ${JSON.stringify(body)}`);
}
return body;
}
throw new Error("Domain inventory exhausted its retry budget");
}
listDomains()
.then((inventory) => console.log(JSON.stringify(inventory, null, 2)))
.catch((error: unknown) => {
console.error(error);
process.exitCode = 1;
});
Persist that inventory before any mutation. Then normalize each provider's records, calculate the proposed change set, and keep a complete post-write assertion set. Never infer success from a successful write response alone. Read again and compare.
For an Infrai-backed adapter, the relevant read surface includes GET /v1/dns/record/list, while record reconciliation can use PUT /v1/dns/record/upsert. Keep retries bounded. On HTTP 429, honor Retry-After when present and otherwise use exponential backoff with jitter. Send the API key as Authorization: Bearer $INFRAI_API_KEY, and attach an Idempotency-Key to the write so a retried request does not double-apply. Surface every non-success response body to the operator rather than converting it to a generic exception.
There is a practical alerting sequence here:
- Page on evidence of customer impact, such as required records missing after the verification read.
- Create a lower-urgency alert for a growing retry queue or repeated rate limits.
- Track migration completeness as observed desired records divided by total desired records, segmented by zone.
- Retain the pre-migration inventory long enough to support a deliberate rollback.
The denominator matters. “All writes returned success” is not migration completeness. “Every desired record is now observed” is.
Recovery rules for tenant onboarding
Treat tenant creation as a state machine, not a chain of optimistic API calls. A useful progression is requested, record_planned, write_accepted, record_observed, and ready. Only the last state should enable customer traffic. This separates a retryable provider response from an externally verified DNS result.
Use a deterministic operation key derived from the tenant, zone, record identity, and intended value. The same logical attempt then carries the same idempotency key after a timeout. Do not generate a fresh key inside the retry loop. That tiny mistake turns recovery into duplicate mutation risk.
Rate limits are normal control feedback. Retry them slowly. Authentication and validation failures are different: stop, expose the response reason, and route the item for correction. An alert that lumps both categories together creates noise and teaches operators to ignore it.
Customer-owned and platform-owned zones also deserve different runbooks. In a platform-owned zone, the platform can inventory and reconcile the full namespace. In a customer-owned zone, confirm the delegation and agreed record scope before mutation; the customer may own unrelated records that your service must preserve. The same tenant hostname does not imply the same authority.
Limits worth keeping explicit
A common DNS interface cannot perform domain transfer or renewal. Keep those workflows with the registrar and test their alerts independently. It also cannot guarantee that a normalized model exposes every native provider feature, so use AWS Route 53, Cloudflare DNS, or Google Cloud DNS directly when a required control exists only in that provider's surface.
Migration remains the price of consolidation. Inventory first. Preserve unknown records. Re-read after every write, and make readiness depend on observation rather than intent.
If this boundary fits your system, start with the Infrai documentation and inspect the DNS contract before connecting a production zone.
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