Pricing

from $3.00 / 1,000 domains

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Domain & Email DNS Checker: WHOIS/RDAP, SPF, DMARC, DKIM, MX

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Bulk check domains: registrar, creation and expiry date via RDAP (WHOIS), nameservers, DNSSEC, plus email security with SPF, DMARC, DKIM and MX records. Flags spoofable domains and domains about to expire. No proxies, pay per domain.

Pricing

from $3.00 / 1,000 domains

Rating

0.0

(0)

Developer

Tim Tonat

Actor stats

Bookmarked

Total users

Monthly active users

8 days ago

Last modified

Categories

Developer tools

SEO tools

domain

Optional

Checked domain (normalized)

Type:string | null

Example:

example.com

input

Optional

Original input if it could not be parsed

Type:string | null

Example:

null

exists

Optional

False if the domain does not exist in DNS (NXDOMAIN)

Type:boolean | null

Example:

true

issues

Optional

Issue codes

Type:string[] | null

Example:

[
  "DMARC_POLICY_NONE"
]

emailSecurityScore

Optional

0–100, see README for the formula

Type:integer | null

Example:

Optional

Mail servers, sorted by priority

Type:string[] | null

Example:

[
  "aspmx.l.google.com"
]

spfRecord

Optional

SPF record

Type:string | null

Example:

v=spf1 include:_spf.google.com ~all

spfAll

Optional

SPF all mechanism (-all, ~all, ?all, +all)

Type:string | null

Example:

~all

spfLookups

Optional

DNS lookups in the SPF record (top level, includes not expanded)

Type:integer | null

Example:

dmarcRecord

Optional

DMARC record

Type:string | null

Example:

v=DMARC1; p=none; rua=mailto:dmarc@example.com

dmarcPolicy

Optional

DMARC policy p (none, quarantine, reject)

Type:string | null

Example:

none

dmarcSubdomainPolicy

Optional

DMARC subdomain policy sp

Type:string | null

Example:

reject

dmarcPct

Optional

DMARC pct

Type:integer | null

Example:

100

dmarcRua

Optional

Aggregate report address

Type:string | null

Example:

mailto:dmarc@example.com

dmarcInherited

Optional

True if the DMARC record comes from the parent domain

Type:boolean | null

Example:

false

dkimSelectors

Optional

DKIM selectors found (null if not checked)

Type:string[] | null

Example:

[
  "google"
]

Optional

IPv4 addresses

Type:string[] | null

Example:

[
  "93.184.215.14"
]

aaaa

Optional

IPv6 addresses

Type:string[] | null

Example:

[]

Optional

Nameservers from DNS

Type:string[] | null

Example:

[
  "ns1.example.com"
]

caa

Optional

CAA records

Type:string[] | null

Example:

[
  "critical 0 issue letsencrypt.org"
]

rdapAvailable

Optional

False if the registry of this TLD offers no public RDAP service

Type:boolean | null

Example:

true

registeredDomain

Optional

Registered domain found via RDAP

Type:string | null

Example:

example.com

registrar

Optional

Registrar

Type:string | null

Example:

MarkMonitor Inc.

createdAt

Optional

Registration date

Type:string | null

Example:

2007-10-09T18:20:50Z

updatedAt

Optional

Last change

Type:string | null

Example:

2026-09-07T09:22:52Z

expiresAt

Optional

Expiry date

Type:string | null

Example:

2028-10-09T18:20:50Z

daysUntilExpiry

Optional

Days until the domain expires

Type:integer | null

Example:

725

status

Optional

Registry status codes

Type:string[] | null

Example:

[
  "client transfer prohibited"
]

nameservers

Optional

Nameservers from the registry

Type:string[] | null

Example:

[
  "ns1.example.com"
]

dnssec

Optional

DNSSEC signed

Type:boolean | null

Example:

false

rdapError

Optional

Why registration data is missing

Type:string | null

Example:

null

error

Optional

Error if the domain could not be checked

Type:string | null

Example:

null

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