Summary
- Registrar
- OVH sas
- Status
- clientTransferProhibited
- Created on
- June 4, 2018
- Expires on
- June 5, 2027
- Name servers
- ns16.ovh.net, dns16.ovh.net
- 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 amplement.tech arrive; SPF, DKIM and DMARC let mail servers check that an e-mail claiming to come from amplement.tech 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 @amplement.tech 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
amplement.tech MX 10 mx1.amplement.tech. amplement.tech MX 20 mx2.amplement.tech.
What the record contains
- 10, 20
- Priority: the server with the lowest number is tried first. Servers with equal priority share the load.
- mx1.amplement.tech.
- 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
amplement.tech 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.amplement.tech, 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.amplement.tech 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.amplement.tech, 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.amplement.tech 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 amplement.tech
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.
No IP address: the domain does not point to any web server.
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 |
|---|---|
| ns16.ovh.net | 5.39.116.25 |
| dns16.ovh.net | 5.135.112.57 |
Mail servers (MX)
MX records point to the servers that receive e-mails sent to the domain, that is to @amplement.tech 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.amplement.tech.
No TXT record.
Related IP addresses
IPv4 addresses used by amplement.tech: website, name servers, mail servers and senders authorized by SPF.
| IP address | Used for | /24 block |
|---|---|---|
| 5.39.116.25 | Name server ns16.ovh.net | 5.39.116.0/24 |
| 5.135.112.57 | Name server dns16.ovh.net | 5.135.112.0/24 |
WHOIS of the domain amplement.tech
Domain Name: amplement.tech Registry Domain ID: D69166720-CNIC Registrar WHOIS Server: whois.ovh.com Registrar URL: https://www.ovhcloud.com/fr/ Updated Date: 2026-07-20T00:04:14.135Z Creation Date: 2018-06-04T12:02:10.000Z Registry Expiry Date: 2027-06-04T23:59:59.000Z Registrar: OVH sas Registrar IANA ID: 433 Registrar Abuse Contact Email: [email protected] Registrar Abuse Contact Phone: Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited Name Server: dns16.ovh.net Name Server: ns16.ovh.net DNSSEC: signedDelegation URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf >>> Last update of WHOIS database: 2026-09-30T23:30:24.705Z <<< For more information on domain status codes, please visit https://icann.org/epp The WHOIS information provided in this page has been redacted in compliance with ICANN's Temporary Specification for gTLD Registration Data. The data in this record is provided by Tucows Registry for informational purposes only, and it does not guarantee its accuracy. Tucows Registry is authoritative for whois information in top-level domains it operates under contract with the Internet Corporation for Assigned Names and Numbers. Whois information from other top-level domains is provided by a third-party under license to Tucows Registry. This service is intended only for query-based access. By using this service, you agree that you will use any data presented only for lawful purposes and that, under no circumstances will you use (a) data acquired for the purpose of allowing, enabling, or otherwise supporting the transmission by e-mail, telephone, facsimile or other communications mechanism of mass unsolicited, commercial advertising or solicitations to entities other than your existing customers; or (b) this service to enable high volume, automated, electronic processes that send queries or data to the systems of any Registrar or any Registry except as reasonably necessary to register domain names or modify existing domain name registrations. Tucows Registry reserves the right to modify these terms at any time. By submitting this query, you agree to abide by this policy. All rights reserved. Domain Name: amplement.tech Registry Domain ID: REDACTED FOR PRIVACY Registrar WHOIS Server: whois.ovh.com Registrar URL: https://ovh.com Updated Date: 2025-08-01T12:37:31Z Creation Date: 2018-06-04T12:02:10Z Registrar Registration Expiration Date: 2027-06-04T12:02:10+02:00 Registrar: OVH, SAS Registrar IANA ID: 433 Registrar Abuse Contact Email: [email protected] Registrar Abuse Contact Phone: +33.972101007 Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited Registry Registrant ID: REDACTED FOR PRIVACY Registrant Name: REDACTED FOR PRIVACY Registrant Organization: REDACTED FOR PRIVACY Registrant Street: REDACTED FOR PRIVACY Registrant City: REDACTED FOR PRIVACY Registrant State/Province: REDACTED FOR PRIVACY Registrant Postal Code: REDACTED FOR PRIVACY Registrant Country: FR Registrant Phone: REDACTED FOR PRIVACY Registrant Phone Ext: REDACTED FOR PRIVACY Registrant Fax: REDACTED FOR PRIVACY Registrant Fax Ext: REDACTED FOR PRIVACY Registrant Email: REDACTED FOR PRIVACY - Send message to contact by visiting https://ovhcloud.com/en/lp/request-ovhcloud-registered-domain/ Registry Admin ID: REDACTED FOR PRIVACY Admin Name: REDACTED FOR PRIVACY Admin Organization: REDACTED FOR PRIVACY Admin Street: REDACTED FOR PRIVACY Admin City: REDACTED FOR PRIVACY Admin State/Province: REDACTED FOR PRIVACY Admin Postal Code: REDACTED FOR PRIVACY Admin Country: FR Admin Phone: REDACTED FOR PRIVACY Admin Phone Ext: REDACTED FOR PRIVACY Admin Fax: REDACTED FOR PRIVACY Admin Fax Ext: REDACTED FOR PRIVACY Admin Email: REDACTED FOR PRIVACY - Send message to contact by visiting https://ovhcloud.com/en/lp/request-ovhcloud-registered-domain/ Registry Tech ID: REDACTED FOR PRIVACY Tech Name: REDACTED FOR PRIVACY Tech Organization: REDACTED FOR PRIVACY Tech Street: REDACTED FOR PRIVACY Tech City: REDACTED FOR PRIVACY Tech State/Province: REDACTED FOR PRIVACY Tech Postal Code: REDACTED FOR PRIVACY Tech Country: FR Tech Phone: REDACTED FOR PRIVACY Tech Phone Ext: REDACTED FOR PRIVACY Tech Fax: REDACTED FOR PRIVACY Tech Fax Ext: REDACTED FOR PRIVACY Tech Email: REDACTED FOR PRIVACY - Send message to contact by visiting https://ovhcloud.com/en/lp/request-ovhcloud-registered-domain/ Name Server: dns16.ovh.net Name Server: ns16.ovh.net DNSSEC: signedDelegation URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/ >>> Last update of WHOIS database: 2026-06-04T12:15:44Z <<< For more information on Whois status codes, please visit https://icann.org/epp ############################################################################### # # Welcome to the OVH WHOIS Server. # # whois server : whois.ovh.com check server : check.ovh.com # # The data in this Whois is at your disposal with the aim of supplying you the # information only, that is helping you in the obtaining of the information # about or related to a domain name registration record. OVH Sas make this # information available "as is", and do not guarantee its accuracy. By using # Whois, you agree that you will use these data only for legal purposes and # that, under no circumstances will you use this data to: (1) Allow, enable, # or otherwise support the transmission of mass unsolicited, commercial # advertisement or roughly or requests via the individual mail (courier), # the E-mail (SPAM), by telephone or by fax. (2) Enable high volume, automated, # electronic processes that apply to OVH Sas (or its computer systems). # The copy, the compilation, the re-packaging, the dissemination or the # other use of the Whois base is expressly forbidden without the prior # written consent of OVH. Domain ownership disputes should be settled using # ICANN's Uniform Dispute Resolution Policy: http://www.icann.org/udrp/udrp.htm # We reserve the right to modify these terms at any time. By submitting # this query, you agree to abide by these terms. 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(2) # l'utilisation d'un grand volume, automatisé des processus électroniques qui # soulignent ou chargent ce système de base de données Whois vous fournissant # cette information. La copie de tout ou partie, la compilation, le # re-emballage, la dissémination ou d'autre utilisation de la base Whois sont # expressément interdits sans consentement écrit antérieur de OVH. Un désaccord # sur la possession d'un nom de domaine peut être résolu en suivant la Uniform # Dispute Resolution Policy de l'ICANN: http://www.icann.org/udrp/udrp.htm # Nous nous réservons le droit de modifier ces termes à tout moment. En # soumettant une requête au Whois vous consentez à vous soumettre à ces termes. # local time : 2026-09-30T23:30:24Z # gmt time : 2026-09-30T23:30:24Z # last modify : 2026-06-04T12:15:44Z % Query time: 636 msec % WHEN: Wed Sep 30 23:30:24 UTC 2026