primus.ca - DNS, WHOIS, DMARC and SPF of the domain name

Summary

Registrar: Tucows.com Co.
Status: ok
Created on: October 26, 2000
Expires on: February 22, 2027
Name servers: ns2.primus.ca, ns1.primus.ca
Mail servers: mx.primus.ca
DMARC: Quarantine
SPF: Soft
DKIM: 1 key found
Website: See the website

Spoofing protection (DMARC)

Quarantine

E-mails spoofing this domain are sent to spam.

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

Policy: Quarantine
Subdomain policy: Quarantine
Messages covered: 100%
DKIM alignment: Relaxed
SPF alignment: Relaxed
Aggregate reports: [email protected]
Failure reports: [email protected]

Record

v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;fo=1;

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 primus.ca.

Rule	Value	Result
include	_spf.primus_ca._d.easydmarc.pro	Allowed
all	—	Suspicious

Top-level DNS lookups: 1 of 10 allowed

Record

v=spf1 include:_spf.primus_ca._d.easydmarc.pro ~all

E-mail signing (DKIM)

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

Selector	Likely service	Key	Status
mail	—	RSA 2048 bits	Active

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

primus.ca  MX  10 mx1.primus.ca.
primus.ca  MX  20 mx2.primus.ca.

What the record contains

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

primus.ca  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.primus.ca, 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.primus.ca  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.primus.ca, 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.primus.ca  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 primus.ca

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	20.151.59.84

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
ns2.primus.ca	209.90.170.87
ns1.primus.ca	216.254.136.121

Mail servers (MX)

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

Priority	Server	IP address
10	mx.primus.ca	209.197.128.105

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.primus.ca.

Name	Content
primus.ca	facebook-domain-verification=f1uv223b91ypfchtovtf6c91t2qj9r
primus.ca	v=spf1 include:_spf.primus_ca._d.easydmarc.pro ~all
primus.ca	_ayoklrhtzvu1btfv099hwexwghag0ux
primus.ca	ms-domain-verification=0954828c-bbea-4b5e-a95a-f3343e86692c
primus.ca	atlassian-domain-verification=RBadiaktVoIa30ZxsYiNfTCkzaNT9V/BJ80WUl6M00y0UIOspDMjlEJXJQWUgoh6
primus.ca	51pmsmlorn1hio8ut4k91vdk88
_dmarc.primus.ca	v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;fo=1;
mail._domainkey.primus.ca	v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArtvFoeGyF9lIcWbm0LiFlltNJ9Cso2AgdFJa4HokfoJQOY54KE/L3yom2qi6qy2vP0em0/lbHIwgvBXibMnIYFDRrtg6QR2OQ0rWHKC9nm1lqVjADTZr3kKDSPKkIXt6fsMGljzo0NtqJxLzTxx1n+XttJ0Af8T1G3N4E8aom6xzh5b/AkQzInpJk20VfEL+WMX1iEizpNGM2ZxlHT8g6+wLlhKynxwM/YzM3QPcYbuBUxHz4Qr5nhH9tmATFfk6gbro1ULFUVbTyhTvB9kCuN+fqUc++wGx5Oh5MUB6GN9b61yN01haikeDeqNYXg7Fnbg+39A48EEvZr4zTBAWpQIDAQAB

Related IP addresses

IPv4 addresses used by primus.ca: website, name servers, mail servers and senders authorized by SPF.

IP address	Used for	/24 block
20.151.59.84	Website	20.151.59.0/24
209.90.170.87	Name server ns2.primus.ca	209.90.170.0/24
216.254.136.121	Name server ns1.primus.ca	216.254.136.0/24
209.197.128.105	Mail server mx.primus.ca	209.197.128.0/24

WHOIS of the domain primus.ca

Domain Name: primus.ca
Registry Domain ID: D92150-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: https://help.opensrs.com/hc/en-us
Updated Date: 2026-01-24T05:29:55Z
Creation Date: 2000-10-25T23:14:50Z
Registry Expiry Date: 2027-02-22T05:00:00Z
Registrar: Tucows.com Co.
Registrar IANA ID: not applicable
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +1.4165350123
Registrar Abuse Contact Phone Ext:
Domain Status: ok https://icann.org/epp#ok
Registry Registrant ID: 29831709-CIRA
Registrant Name: Primus Management ULC
Registrant Organization: Primus Management ULC
Registrant Street: 5343 Dundas Street West, Suite 400
Registrant City: Toronto
Registrant State/Province: ON
Registrant Postal Code: M9B6K5
Registrant Country: CA
Registrant Phone: +1.4162077079
Registrant Phone Ext:
Registrant Fax: +1.4162077169
Registrant Fax Ext:
Registrant Email: [email protected]
Registry Admin ID: 79228854-CIRA
Admin Name: Sheila Leung
Admin Organization: Primus Management ULC
Admin Street: 2680 Skymark Avenue, Suite 100
Admin City: Mississauga
Admin State/Province: ON
Admin Postal Code: L4W5L6
Admin Country: CA
Admin Phone: +1.4162077065
Admin Phone Ext:
Admin Fax: +1.4162077169
Admin Fax Ext:
Admin Email: [email protected]
Registry Tech ID: 79228855-CIRA
Tech Name: Sheila Leung
Tech Organization: Primus Management ULC
Tech Street: 2680 Skymark Avenue, Suite 100
Tech City: Mississauga
Tech State/Province: ON
Tech Postal Code: L4W5L6
Tech Country: CA
Tech Phone: +1.4162077079
Tech Phone Ext:
Tech Fax: +1.4162077169
Tech Fax Ext:
Tech Email: [email protected]
Registry Billing ID:
Billing Name:
Billing Organization:
Billing Street:
Billing City:
Billing State/Province:
Billing Postal Code:
Billing Country:
Billing Phone:
Billing Phone Ext:
Billing Fax:
Billing Fax Ext:
Billing Email:
Name Server: ns1.primus.ca
Name Server: ns2.primus.ca
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-10-01T03:01:17Z <<<

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

%
% Use of CIRA's WHOIS service is governed by the Terms of Use in its Legal
% Notice, available at https://www.cira.ca/en/resources/documents/about/website-terms-use
%
% (c) 2026 Canadian Internet Registration Authority, (http://www.cira.ca/)
Domain Name: primus.ca
Registry Domain ID: D92150-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: https://help.opensrs.com/hc/en-us
Updated Date: 2026-01-24T05:29:55Z
Creation Date: 2000-10-25T23:14:50Z
Registry Expiry Date: 2027-02-22T05:00:00Z
Registrar: Tucows.com Co.
Registrar IANA ID: not applicable
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +1.4165350123
Registrar Abuse Contact Phone Ext:
Domain Status: ok https://icann.org/epp#ok
Registry Registrant ID: 29831709-CIRA
Registrant Name: Primus Management ULC
Registrant Organization: Primus Management ULC
Registrant Street: 5343 Dundas Street West, Suite 400
Registrant City: Toronto
Registrant State/Province: ON
Registrant Postal Code: M9B6K5
Registrant Country: CA
Registrant Phone: +1.4162077079
Registrant Phone Ext:
Registrant Fax: +1.4162077169
Registrant Fax Ext:
Registrant Email: [email protected]
Registry Admin ID: 79228854-CIRA
Admin Name: Sheila Leung
Admin Organization: Primus Management ULC
Admin Street: 2680 Skymark Avenue, Suite 100
Admin City: Mississauga
Admin State/Province: ON
Admin Postal Code: L4W5L6
Admin Country: CA
Admin Phone: +1.4162077065
Admin Phone Ext:
Admin Fax: +1.4162077169
Admin Fax Ext:
Admin Email: [email protected]
Registry Tech ID: 79228855-CIRA
Tech Name: Sheila Leung
Tech Organization: Primus Management ULC
Tech Street: 2680 Skymark Avenue, Suite 100
Tech City: Mississauga
Tech State/Province: ON
Tech Postal Code: L4W5L6
Tech Country: CA
Tech Phone: +1.4162077079
Tech Phone Ext:
Tech Fax: +1.4162077169
Tech Fax Ext:
Tech Email: [email protected]
Registry Billing ID:
Billing Name:
Billing Organization:
Billing Street:
Billing City:
Billing State/Province:
Billing Postal Code:
Billing Country:
Billing Phone:
Billing Phone Ext:
Billing Fax:
Billing Fax Ext:
Billing Email:
Name Server: ns1.primus.ca
Name Server: ns2.primus.ca
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-10-01T03:01:17Z <<<

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

%
% Use of CIRA's WHOIS service is governed by the Terms of Use in its Legal
% Notice, available at https://www.cira.ca/en/resources/documents/about/website-terms-use
%
% (c) 2026 Canadian Internet Registration Authority, (http://www.cira.ca/)

% Query time: 594 msec
% WHEN: Thu Oct 01 03:01:17 UTC 2026