Dataweaz

kpn.com

Summary

Registrar
Tucows Domains Inc.
Status
clientTransferProhibited
Created on
December 19, 1994
Expires on
December 18, 2026
Name servers
ns11.kpn.net, ns1.kpn.net
Mail servers
kpn-com.i-v1.mx.microsoft
DMARC
Reject
SPF
Soft
DKIM
2 keys found
Website
See the website

Spoofing protection (DMARC)

Reject

E-mails spoofing this domain are rejected.

DMARC tells mail servers what to do with an e-mail that claims to come from kpn.com but fails SPF and DKIM checks.

Policy
Reject
Subdomain policy
Reject
Messages covered
100%
DKIM alignment
Strict
SPF alignment
Relaxed
Aggregate reports
[email protected]
Failure reports
—

Record

v=DMARC1; p=reject; rua=mailto:[email protected]; adkim=s; aspf=r;

Authorized senders (SPF)

Soft

E-mails sent by any other server are accepted but flagged as suspicious.

SPF lists the servers allowed to send e-mails for kpn.com.

RuleValueResult
includespf.safemail.kpn.comAllowed
all—Suspicious

Top-level DNS lookups: 1 of 10 allowed

Record

v=spf1 include:spf.safemail.kpn.com ~all

E-mail signing (DKIM)

DKIM keys published by kpn.com under the most common selectors. Other keys may exist under selectors specific to each sending service.

SelectorLikely serviceKeyStatus
s1SendGridRSA 2048 bitsActive
s2SendGridRSA 2048 bitsActive

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 kpn.com arrive; SPF, DKIM and DMARC let mail servers check that an e-mail claiming to come from kpn.com 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 @kpn.com 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

kpn.com  MX  10 mx1.kpn.com.
kpn.com  MX  20 mx2.kpn.com.

What the record contains

10, 20
Priority: the server with the lowest number is tried first. Servers with equal priority share the load.
mx1.kpn.com.
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

kpn.com  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.kpn.com, 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.kpn.com  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.kpn.com, 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.kpn.com  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 kpn.com

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.

TypeIP address
A99.83.136.155
A75.2.72.204
AAAA2600:9000:a400:dede:1a1c:a23f:9ae6:7bbc
AAAA2600:9000:a504:9080:40c0:d138:ca59:2e3d

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.

ServerIP address
ns11.kpn.net213.75.63.33
ns1.kpn.net194.151.228.10

Mail servers (MX)

MX records point to the servers that receive e-mails sent to the domain, that is to @kpn.com 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.

PriorityServerIP address
0kpn-com.i-v1.mx.microsoft52.101.103.143

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.kpn.com.

NameContent
kpn.comfacebook-domain-verification=oe3z2excnmn0my3ayl1i0nqi26nrzi
kpn.comdocusign=7a9f2942-9833-4821-aec9-543f0d9a535f
kpn.comNPUo4zyqgeZnNTxyhn0OGq47cl3WFs7BPkIHJ5e7uVG6WU0w9KeVS9X1bWlH3E37
kpn.comaevShr9sP3YLx0QKSION4AdYQocnlFq63tN72qyPbF8eh07BClGXUnc2CIgD8yxR
kpn.com_yyfnf3y3uu3kesxxg6inrudhvmus269
kpn.comViYJp9NlDtotbhOlXjbIZwvuZWBebK8oWUpQBsBSwSSy0JrLQrjSCtmVfAWASUJA
kpn.comYb1450kauMksXWJzXlNba8ncgHkRX4NtzayfzEfR6nose3iLvx8b8XffSkU2b9D5
kpn.comairtable-verification=23acd19b9067690a95d91bbe2c84f7f7
kpn.comUoN6VFlfJSzaxz347cg0i2wnBuGgmW1JoC24pxJ6JNYjayOiaNA9PTRwTuljClY0
kpn.combrowserstack-domain-verification=c7434e93-1d8e-481e-9e76-1c03083057e7
kpn.comapple-domain-verification=Z7SP4QKg6NHaVO1Z
kpn.comgoogle-site-verification=XGZ6tTJCSYHEyLTMJXHvmNAzps-rI-PAc9tvHephj_w
kpn.comgROyReFQxYOf3LSKx50ds7pF6mF3JeigKZjhMADDGEoa5btGxFKP4QlleuABtX7i
kpn.comastro-domain-verification=cmh35dtke05cm01maik5sh3hm
kpn.comt6cgakcDo7xTM5FdmAOJzYLRK8BP6PM7FFT22mYUyT9vBmeCkQEEgcjedM7faYJ4
kpn.comqHxBDLaRhLvmS49pj3n4tXAAtbJvaWWCblUpxN3Euu0lijcwwCKHfcFTSh8NI8us
kpn.comsending_domain892761=d9b3bc70a2ad775c9501123cad1861d25adc7d673a9f1e910b04ea76a8f51be6
kpn.comVHtbjkd3YeqQSrilTmRMwrMtDZi0HLqVbWq7E3bKH4bYmpap3RvzdhmAHLl27DX0
kpn.comapple-domain-verification=iBU3LjBt6LXVeNrW5JfIlpkW5YqxszH9MS8uRnSjsXs
kpn.comatlassian-domain-verification=h/BZz9Pv7Jleyl0qqKu8yaj3/xz1jgRaG6YlJPdlJ9iael84jExA4TL24qG6fTiP
kpn.com26wWHhlyDNNjPftjnezf2pRhhisotMt1PQ7stJK30bvlo6qbVLrk7qsimYkb5Ozs
kpn.comuXfEh50uN0yu5qkzoUXCAy9jErhix5xk20QhIc8ASOCEcIQvg1G7rLfaovWO0FOO
kpn.comhCY3aL5CUBiLlYNNBiOkdoZAKtVwcXUVEoR4Jp9ZwwYVzisgq3j4uOI37UymJYyz
kpn.compWxQA8qJDk9FOZXlrljPxID0E8PGUHI24FPDwHvNOymQgbRsDplofmA55oxuN0KG
kpn.comapple-domain-verification=RIjwUQHiCFvUgkg0-low88dutI4bWl4Jazco6oVk8pw
kpn.com00Dds000002GWnZ=1TBds0000000ADt
kpn.comgoogle-site-verification=ACbCFC6KOsD0bBR3t4xWwucRNs1c-ec62wH4Jeo5xWQ
kpn.comXwf6hbL1JasdUsu3yrEPRlLOX8bn4Nhp7F59azsKxYieRbWC3gEViGeVDqrkZ4pP
kpn.compardot863842=d8565bc8fb6bfe887ef4c2895ffb45d9d36d76a169ff4c0d57bb53a36a019864
kpn.comY58oahimn9wLp9v6H6lkUk8bc4cNqN8HXuiqqpFAA6krqm9i0AYocmvb8jbz5q6m
kpn.comNxyfNfD3SH1ZfvCkA5zyRrG2MXtiOchFDDeO5NzM3l7PW3jwjDeWhcOAv3xBrUHv
kpn.comrt6kl9FsRxC9J46cX3aPxDLmkmSBpuAZ3mDx9ff4HBdI6S4H8FNaWofKPYVKCgsT
kpn.comelevenlabs=7Z3aoJS6snTrfftNSnZS284dl3kfA5mcYtEF5xSpeOE
kpn.comuxd57JmeFxoOTrrQfvri7SMlqzD6TrFNfOOg8uV8Jx4iFRg70pE7pwoU8Q01b43U
kpn.com00D0Y0000034w37=1TBTe00000001tm
kpn.comfigma-domain-verification=baaa88dc21cd82557a5c133781b2dff0281f54f1c64f75ad7f497f79a83467f6-1755611702
kpn.comgoogle-site-verification=MpEtLxmUTXjyIUYDEuhP1lD4osj0HlfG0YUewfimoyA
kpn.comdq32V8jolagPybYzMmYzdCIwxsKMmJiGqHk34wMrnKNloQtQ1rC3l83KSMNiQC6K
kpn.comKUBrNtncIi5R69h7KkmNquRxugEpMxEncMrYVLK4TgKDKVGNedYlUjkgcgQA33yT
kpn.comsending_domain863842=0aabfcc9132f59757d0053c22752e9b82d0fad2cae9387575e68093b26c1b9e6
kpn.commongodb-site-verification=dUpWuHpGKDBaCzaMCUV3GbxGBRgQc6dE
kpn.com00D30000000oQac=1TBTd00000000Kz
kpn.compardot977453=8455bd6813e854172afadfc4d97087449546f7fcd09ef50b38848a476cf74a4e
kpn.comd365mktkey=IgyJJZcagEZMSckzP9AizxlreJeFfcvljOLezZ1gh3Ix
kpn.comndQuDEhu9x1xFvA6jOrCLgOsDpEcpegMG6zh5H9HiERukr2gMLxuqMC2CvF4RxhO
kpn.comhYVk8Wr9FOuzAMKSQMIfbeajDzwmQ6GCqkVUyxG6tt08mnKQzkI5CbhUytGX39K7
kpn.comsending_domain977453=23b325b444874fca17cd7735a47951abac5e34771a61ae473c3c62b8c8a7f2cf
kpn.comZoMNBQezdvNT1fsvTUtgxpSL1UDizoKWPdEweeap2Z0xxsa5PE6LSlC1jq7bfYw3
kpn.comv=spf1 include:spf.safemail.kpn.com ~all
kpn.compardot892761=d076a51e90666dfaaa5e9ca876e30d6e05c7cfeac2cf686bd0f3de27797394af
kpn.comGdLA3ueRJ2hiLuaTRFZIxmSTHqkVsHvHF3UyiIPtoi12BGNusQycjuDoD7wvcJzp
kpn.comonetrust-domain-verification=14142ac169f84c4284a2bd6318218fe7
kpn.com_t8xxbr0fquamqm1rojv1awoisu07k74
kpn.com00Dds000002K30f=1TBds00000008gj
kpn.comjuGkLK6em7kLak50WZ0elq4pyK-qD2eSHkowe2CvY_I
kpn.com7sBNoAEjPHRDRizm85GcZlz2BrI8FFFk9UEYxTEk55KxMpTQLZPPmkXHTlU5gkDX
kpn.com_32pc0mw08dyf97ogca8z8t3oiuajvkd
kpn.com00DRR00000N7c1y=1TBRR0000000B57
kpn.com00DUC0000065XXz=1TBUC0000000Lyv
_dmarc.kpn.comv=DMARC1; p=reject; rua=mailto:[email protected]; adkim=s; aspf=r;
s1._domainkey.kpn.comk=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA18cGwPW39mDx4UijS6YNtdRZt66AWIQ9zs3P/Blr2cnuneEyuHc+CmX8aCcAb9dW3iHUVviM1iPo0WKlmBCqwW0mMChmbk62rYfy5qrEM9ItDOrEFlrqAdmujb5DyWYjT58eAesWGtNRy4e3/ALj7DwzTY/phlIfYT30N+OfDmr1u9xDsaRpXk3AzvfR5XKB0UXSW1521uozpD7hz8BBbQcniYpQcmLqQsF7j/MLUkBmlbMwfP+UWD7jT7Fnw53uwuk/k3doFyHZ5caFFt/+TAJ/H5mTDqhwQYtgphHa6CKzWIktIDy1uWF9TFOgnRLJ0OeNwdst19iE4X2KbSUh3wIDAQAB
s2._domainkey.kpn.comk=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyxgyzz42SNelH9+8YxN1zhXcR15XdijQdYiVpUqWDcaenNw6blslybSbti647M7tnChgwtQYMLAdeBuzBjOaUfZi/iM195cDdrNEZ05MLQ4b1+2Le8lWAwHLHrYLTS1t3qGObbV3Ie2pM3QIvVi0Hhp7rKDDS1BTUiArVUYQqDYU7paZK9FyXWat2/Hwov2a/UW0jcgHGif9fv+WnBnFW/H8xxvQao4P+zIIi9LE39krgPs0jwTZpr8PPhgudNFxrwxlN0SpC2JBp/LbXdtg8oDJXf/1uET/lxp30SaD+MwPYzhvDBX7RKMcyBfyZ4zCP1aVytvCGBCypOLT/AX1UQIDAQAB

Related IP addresses

IPv4 addresses used by kpn.com: website, name servers, mail servers and senders authorized by SPF.

IP addressUsed for/24 block
99.83.136.155Website99.83.136.0/24
75.2.72.204Website75.2.72.0/24
213.75.63.33Name server ns11.kpn.net213.75.63.0/24
194.151.228.10Name server ns1.kpn.net194.151.228.0/24
52.101.103.143Mail server kpn-com.i-v1.mx.microsoft52.101.103.0/24

WHOIS of the domain kpn.com

Domain Name: KPN.COM
   Registry Domain ID: 2845206_DOMAIN_COM-VRSN
   Registrar WHOIS Server: whois.tucows.com
   Registrar URL: http://www.tucows.com
   Updated Date: 2025-11-19T05:15:11Z
   Creation Date: 1994-12-19T05:00:00Z
   Registry Expiry Date: 2026-12-18T05:00:00Z
   Registrar: Tucows Domains Inc.
   Registrar IANA ID: 69
   Registrar Abuse Contact Email: [email protected]
   Registrar Abuse Contact Phone: +1.4165350123
   Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
   Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
   Name Server: NS1.KPN.NET
   Name Server: NS11.KPN.NET
   DNSSEC: signedDelegation
   DNSSEC DS Data: 40959 13 2 5E54399A18C837D8362EDDCD67FC226084FBE2C4563B6E0395CFC515FEF6E30B
   URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2026-10-02T22:44:58Z <<<

For more information on Whois status codes, please visit https://icann.org/epp

NOTICE: The expiration date displayed in this record is the date the
registrar's sponsorship of the domain name registration in the registry is
currently set to expire. This date does not necessarily reflect the expiration
date of the domain name registrant's agreement with the sponsoring
registrar.  Users may consult the sponsoring registrar's Whois database to
view the registrar's reported date of expiration for this registration.

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