Summary
- Registrar
- PDR Ltd. d/b/a PublicDomainRegistry.com
- Status
- clientTransferProhibited
- Created on
- April 20, 2015
- Expires on
- April 21, 2028
- Name servers
- ns-450.awsdns-56.com, ns-1328.awsdns-38.org, ns-898.awsdns-48.net, ns-1613.awsdns-09.co.uk
- Mail servers
- —
- DKIM
- No key found among the common selectors
- Website
- See the website
MX, SPF, DKIM and DMARC: the e-mail records
Four DNS records make a domain's e-mail work. MX says where e-mails sent to cnp.ooo arrive; SPF, DKIM and DMARC let mail servers check that an e-mail claiming to come from cnp.ooo was really sent by this domain, which protects it against spoofing.
MX
An MX (Mail Exchanger) record designates a server that receives e-mails sent to the domain. When someone writes to an @cnp.ooo address, their mail server queries the DNS for the domain's MX records, then delivers the message to the server they point to.
Example record
cnp.ooo MX 10 mx1.cnp.ooo. cnp.ooo MX 20 mx2.cnp.ooo.
What the record contains
- 10, 20
- Priority: the server with the lowest number is tried first. Servers with equal priority share the load.
- mx1.cnp.ooo.
- Host name of the mail server. It must point to an A or AAAA record: an IP address or an alias (CNAME) is not allowed here.
- 0 .
- An MX "0 .", called a null MX, declares that the domain accepts no e-mail: sending servers give up at once instead of retrying.
Declaring at least two servers with different priorities avoids losing e-mails during an outage: sending servers retry for several days and fall back on the backup server. Without any MX, they try to deliver directly to the IP address of the domain.
SPF
SPF (Sender Policy Framework) is a TXT record listing the servers allowed to send e-mails on behalf of the domain. The receiving server checks that the sender is on this list. The final "all" rule says what to do with other servers: reject them (-all), flag their e-mails as suspicious (~all) or make no decision (?all).
Example record
cnp.ooo TXT "v=spf1 mx include:_spf.google.com ip4:192.0.2.10 -all"
What the record contains
- v=spf1
- Identifies the record as an SPF policy. It must come first.
- ip4, ip6
- Allows a specific IP address or an address range, for example ip4:192.0.2.0/24.
- a, mx
- Allows the addresses of the domain itself (A record) or those of its mail servers (MX).
- include
- Allows the servers of another domain, usually a sending service: include:_spf.google.com for Google Workspace.
- -all, ~all
- Final rule, applied to every other server. Its qualifier decides what happens to them: - rejects them, ~ flags their e-mails as suspicious, ? makes no decision, + accepts them (avoid it).
A domain must publish only one SPF record, and its evaluation cannot exceed 10 DNS lookups (include, a, mx, exists, redirect). Beyond that, mail servers treat it as invalid.
DKIM
DKIM (DomainKeys Identified Mail) signs every outgoing e-mail with a private key. The matching public key is published in a TXT record at selector._domainkey.cnp.ooo, so the recipient can check that the message really comes from the domain and was not altered on the way. The selector is chosen by each sending service and cannot be guessed: Dataweaz checks the most common ones (Google Workspace, Microsoft 365, Mailchimp, SendGrid…), so a key published under another selector may exist without appearing here.
Example record
google._domainkey.cnp.ooo TXT "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA…"
What the record contains
- v=DKIM1
- Protocol version. Optional but recommended, in which case it must come first.
- k
- Key algorithm: rsa, the most common, or ed25519.
- p
- Public key, base64-encoded. An empty value means the key has been revoked.
- t
- Flags: y marks a key in testing, whose failures must not be penalized; s forbids its use for subdomains.
Each sending service publishes its key under its own selector (google, selector1, k1…), which allows several keys and seamless rotation. A 2048-bit RSA key is recommended today.
DMARC
DMARC (Domain-based Message Authentication, Reporting and Conformance) builds on SPF and DKIM. Published on _dmarc.cnp.ooo, it tells mail servers what to do with an e-mail that fails these checks (let it through, send it to spam or reject it) and where to send reports.
Example record
_dmarc.cnp.ooo TXT "v=DMARC1; p=quarantine; rua=mailto:[email protected]; adkim=r; aspf=r"
What the record contains
- v=DMARC1
- Identifies the record as a DMARC policy. It must come first.
- p
- Policy applied to e-mails that fail the checks: none (monitoring only), quarantine (spam folder) or reject.
- sp
- Subdomain policy. Without it, subdomains follow the domain's policy.
- rua
- Address that receives daily aggregate reports about e-mails sent on behalf of the domain, whether they pass the checks or not.
- ruf
- Address that receives detailed failure reports, message by message. Few providers still send them.
- pct
- Percentage of e-mails subject to the policy, for a gradual rollout. 100 by default.
- adkim, aspf
- DKIM and SPF alignment: r (relaxed, a subdomain of the same domain is enough) or s (strict, the domain must be identical).
To roll out DMARC without blocking legitimate e-mails, start with p=none and an rua address, analyze the reports to find every service sending on behalf of the domain, then move to quarantine and finally to reject.
DNS records of cnp.ooo
IP addresses (A and AAAA)
An A record maps the domain name to an IPv4 address: the address of the server that browsers contact to display the website. The AAAA record does the same for an IPv6 address. A domain can have several of them to spread visits across several servers.
| Type | IP address |
|---|---|
| A | 44.210.222.135 |
Name servers (NS)
NS records designate the authoritative DNS servers of the domain: they answer every question about its other records (A, MX, TXT…). They are provided by the registrar, the hosting provider or a dedicated DNS service, and several servers are declared so that the domain keeps working if one of them fails.
| Server | IP address |
|---|---|
| ns-450.awsdns-56.com | 205.251.193.194 |
| ns-1328.awsdns-38.org | 205.251.197.48 |
| ns-898.awsdns-48.net | 205.251.195.130 |
| ns-1613.awsdns-09.co.uk | 205.251.198.77 |
Mail servers (MX)
MX records point to the servers that receive e-mails sent to the domain, that is to @cnp.ooo addresses. Each server has a priority: the one with the lowest number is tried first, the others take over if it fails. Without an MX record, the domain cannot receive e-mails.
No mail server: the domain does not receive e-mails.
TXT records
TXT records hold free text. They are used to prove ownership of the domain to online services (Google, Microsoft, Facebook…) and to publish e-mail security rules: SPF on the domain itself, DMARC on _dmarc.cnp.ooo.
No TXT record.
Related IP addresses
IPv4 addresses used by cnp.ooo: website, name servers, mail servers and senders authorized by SPF.
| IP address | Used for | /24 block |
|---|---|---|
| 44.210.222.135 | Website | 44.210.222.0/24 |
| 205.251.193.194 | Name server ns-450.awsdns-56.com | 205.251.193.0/24 |
| 205.251.197.48 | Name server ns-1328.awsdns-38.org | 205.251.197.0/24 |
| 205.251.195.130 | Name server ns-898.awsdns-48.net | 205.251.195.0/24 |
| 205.251.198.77 | Name server ns-1613.awsdns-09.co.uk | 205.251.198.0/24 |
WHOIS of the domain cnp.ooo
Domain Name: CNP.OOO Registry Domain ID: D63496069-CNIC Registrar WHOIS Server: whois.PublicDomainRegistry.com Registrar URL: https://publicdomainregistry.com Updated Date: 2026-05-28T12:00:48.0Z Creation Date: 2015-04-20T13:18:15.0Z Registry Expiry Date: 2028-04-20T23:59:59.0Z Registrar: PDR Ltd. d/b/a PublicDomainRegistry.com Registrar IANA ID: 303 Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited Registrant Organization: Payment-as-a-Service Corporation Registrant State/Province: Virginia Registrant Country: US Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name. Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name. Name Server: NS-450.AWSDNS-56.COM Name Server: NS-898.AWSDNS-48.NET Name Server: NS-1613.AWSDNS-09.CO.UK Name Server: NS-1328.AWSDNS-38.ORG DNSSEC: unsigned Registrar Abuse Contact Email: [email protected] Registrar Abuse Contact Phone: +1.2013775952 URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/ >>> Last update of WHOIS database: 2026-10-02T09:35:32.0Z <<< For more information on Whois status codes, please visit https://icann.org/epp The registration data available in this service is limited. Additional data may be available at https://lookup.icann.org The Whois and RDAP services are provided by CentralNic, and contain information pertaining to Internet domain names registered by our our customers. By using this service you are agreeing (1) not to use any information presented here for any purpose other than determining ownership of domain names, (2) not to store or reproduce this data in any way, (3) not to use any high-volume, automated, electronic processes to obtain data from this service. Abuse of this service is monitored and actions in contravention of these terms will result in being permanently blacklisted. All data is (c) CentralNic Ltd (https://www.centralnicregistry.com) Access to the Whois and RDAP services is rate limited. For more information, visit https://centralnicregistry.com/policies/whois-guidance. Domain Name: CNP.OOO Registry Domain ID: D63496069-CNIC Registrar WHOIS Server: whois.publicdomainregistry.com Registrar URL: www.publicdomainregistry.com Updated Date: 2026-04-22T16:30:32Z Creation Date: 2015-04-20T13:18:15Z Registrar Registration Expiration Date: 2028-04-20T23:59:59Z Registrar: PDR Ltd. d/b/a PublicDomainRegistry.com Registrar IANA ID: 303 Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited Registry Registrant ID: Not Available From Registry Registrant Name: Kamran Razvan Registrant Organization: REDACTED FOR PRIVACY Registrant Street: 2200 Kraft Drive Suite 1175 Registrant City: Blacksburg Registrant State/Province: Virginia Registrant Postal Code: 24060 Registrant Country: US Registrant Phone: +540.9619811 Registrant Phone Ext: Registrant Fax: +540.3013610 Registrant Fax Ext: Registrant Email: [email protected] Registry Admin ID: Not Available From Registry Admin Name: Kamran Razvan Admin Organization: Payment-as-a-Service Corporation Admin Street: 2200 Kraft Drive Suite 1175 Admin City: Blacksburg Admin State/Province: Virginia Admin Postal Code: 24060 Admin Country: US Admin Phone: +540.9619811 Admin Phone Ext: Admin Fax: +540.3013610 Admin Fax Ext: Admin Email: [email protected] Registry Tech ID: Not Available From Registry Tech Name: Kamran Razvan Tech Organization: Payment-as-a-Service Corporation Tech Street: 2200 Kraft Drive Suite 1175 Tech City: Blacksburg Tech State/Province: Virginia Tech Postal Code: 24060 Tech Country: US Tech Phone: +540.9619811 Tech Phone Ext: Tech Fax: +540.3013610 Tech Fax Ext: Tech Email: [email protected] Name Server: ns-1328.awsdns-38.org Name Server: ns-1613.awsdns-09.co.uk Name Server: ns-450.awsdns-56.com Name Server: ns-898.awsdns-48.net DNSSEC: Unsigned Registrar Abuse Contact Email: [email protected] Registrar Abuse Contact Phone: +1.2013775952 URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/ >>> Last update of WHOIS database: 2026-10-02T09:35:33Z <<< For more information on Whois status codes, please visit https://icann.org/epp Registration Service Provided By: CLICK & PLEDGE The data in this whois database is provided to you for information purposes only, that is, to assist you in obtaining information about or related to a domain name registration record. We make this information available "as is", and do not guarantee its accuracy. By submitting a whois query, you agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to: (1) enable high volume, automated, electronic processes that stress or load this whois database system providing you this information; or (2) allow, enable, or otherwise support the transmission of mass unsolicited, commercial advertising or solicitations via direct mail, electronic mail, or by telephone. The compilation, repackaging, dissemination or other use of this data is expressly prohibited without prior written consent from us. The Registrar of record is PDR Ltd. d/b/a PublicDomainRegistry.com. We reserve the right to modify these terms at any time. By submitting this query, you agree to abide by these terms. % Query time: 838 msec % WHEN: Fri Oct 02 09:35:32 UTC 2026