Supported DNS Record Types for nxtdev.xyz Subdomains

A — IPv4 address

An A record maps a host to an IPv4 address. Use it to point your subdomain (or a sub-host) directly at a server.

Field	Required	Constraints
`host`	Yes	`@` or a relative label; max 63 chars; lowercase alphanumeric, `.`, `_`, `-`
`content`	Yes	Valid IPv4 address. Private ranges (10.x, 192.168.x, 172.16–31.x) are blocked.
`ttl`	No	Integer, 60–86400. Defaults to 3600.
`proxied`	No	`true` or `false`. Routes traffic through Cloudflare when enabled.

Use case: Point your apex subdomain at a VPS.

example A record

Type:    A
Host:    @
Content: 203.0.113.42
TTL:     3600
Proxied: true

AAAA — IPv6 address

An AAAA record maps a host to an IPv6 address. It works identically to an A record but accepts IPv6 notation.

Field	Required	Constraints
`host`	Yes	Same rules as A record host.
`content`	Yes	Valid IPv6 address. Private ranges are blocked.
`ttl`	No	Integer, 60–86400. Defaults to 3600.
`proxied`	No	Available for AAAA records, same behavior as A.

Use case: Serve traffic over IPv6 from a dual-stack server.

example AAAA record

Type:    AAAA
Host:    @
Content: 2001:db8::1
TTL:     3600
Proxied: false

CNAME — hostname alias

A CNAME record creates an alias from one hostname to another. The content must be a hostname — IP addresses are rejected.

Field	Required	Constraints
`host`	Yes	Relative label or `@`; max 63 chars.
`content`	Yes	Valid hostname (max 255 chars, no consecutive dots, not an IP).
`ttl`	No	Integer, 60–86400. Defaults to 3600.
`proxied`	No	Available for CNAME records.

Use case: Point your subdomain at a Vercel deployment.

example CNAME record

Type:    CNAME
Host:    @
Content: cname.vercel-dns.com
TTL:     3600
Proxied: false

TXT — text data

A TXT record stores arbitrary text. Common uses include SPF policies, DKIM public keys, and domain ownership verification tokens.

Field	Required	Constraints
`host`	Yes	Relative label or `@`; max 63 chars.
`content`	Yes	String, 1–1024 characters.
`ttl`	No	Integer, 60–86400. Defaults to 3600.

Proxying is not available for TXT records.Use case: Add an SPF record to authorize your mail sender.

example TXT record

Type:    TXT
Host:    @
Content: v=spf1 include:sendgrid.net ~all
TTL:     3600

MX — mail exchange

An MX record specifies the mail server responsible for accepting email for a host. Lower priority values are tried first.

Field	Required	Constraints
`host`	Yes	Relative label or `@`; max 63 chars.
`content`	Yes	Valid hostname (not an IP).
`priority`	Yes	Integer, 0–65535. Defaults to 10 when left blank.
`ttl`	No	Integer, 60–86400. Defaults to 3600.

Proxying is not available for MX records.Use case: Route incoming email through a third-party mail service.

example MX record

Type:     MX
Host:     @
Content:  mail.example.com
Priority: 10
TTL:      3600

SRV — service locator

An SRV record advertises the location of a specific service. The DNS name it creates follows the pattern _service._proto.host.subdomain.nxtdev.xyz.

Field	Required	Constraints
`host`	Yes	Relative label or `@`; max 63 chars.
`service`	Yes	Must start with `_`, e.g. `_minecraft`. Lowercase alphanumeric and `-`.
`proto`	Yes	One of `_tcp`, `_udp`, or `_tls`.
`priority`	Yes	Integer, 0–65535. Defaults to 0.
`weight`	Yes	Integer, 0–65535. Defaults to 0.
`port`	Yes	Integer, 1–65535.
`target`	Yes	Valid hostname (not an IP).
`ttl`	No	Integer, 60–86400. Defaults to 3600.

Proxying is not available for SRV records.Use case: Advertise a Minecraft Java server so clients can connect with just your subdomain name.

example SRV record

Type:     SRV
Host:     @
Service:  _minecraft
Proto:    _tcp
Priority: 0
Weight:   0
Port:     25565
Target:   mc.example.com
TTL:      3600

NS — nameserver

An NS record delegates DNS authority for a zone to one or more nameservers.

Field	Required	Constraints
`host`	Yes	Relative label or `@`; max 63 chars.
`content`	Yes	Valid nameserver hostname (not an IP).
`ttl`	No	Integer, 60–86400. Defaults to 3600.

Proxying is not available for NS records.

Adding NS records at the apex (@) enables delegation mode for your subdomain. While delegation is active, all DNS editing is locked. See the Delegation documentation for details on how to manage this.

Use case: Delegate a sub-zone to your own nameservers.

example NS record

Type:    NS
Host:    @
Content: ns1.example.com
TTL:     3600

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Supported DNS Record Types for nxtdev.xyz Subdomains