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

Summary

Registrar: Webnames.ca Inc.
Status: clientTransferProhibited
Created on: September 29, 2000
Expires on: February 13, 2027
Name servers: a10-65.akam.net, a26-66.akam.net, a1-62.akam.net, a4-67.akam.net, a7-65.akam.net, a5-64.akam.net
Mail servers: nbc-ca.mail.protection.outlook.com
DMARC: Reject
SPF: Strict
DKIM: 4 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 nbc.ca but fails SPF and DKIM checks.

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

Record

v=DMARC1;p=reject;rua=mailto:[email protected];ruf=mailto:[email protected];fo=0

Authorized senders (SPF)

Strict

E-mails sent by any other server are rejected.

SPF lists the servers allowed to send e-mails for nbc.ca.

Rule	Value	Result
ip4	164.55.253.249	Allowed
ip4	164.55.251.249	Allowed
include	_spf.bluematrix.com	Allowed
include	amazonses.com	Allowed
include	spf.protection.outlook.com	Allowed
a	mailhybrid.bnc.ca	Allowed
include	spf-ca.wfs.cloud	Allowed
include	_spf.salesforce.com	Allowed
all	—	Rejected

Top-level DNS lookups: 6 of 10 allowed

Record

v=spf1 ip4:164.55.253.249 ip4:164.55.251.249 include:_spf.bluematrix.com include:amazonses.com include:spf.protection.outlook.com a:mailhybrid.bnc.ca include:spf-ca.wfs.cloud include:_spf.salesforce.com -all

E-mail signing (DKIM)

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

Selector	Likely service	Key	Status
selector1	Microsoft 365	RSA 2048 bits	Active
selector2	Microsoft 365	RSA 2048 bits	Active
s1	SendGrid	RSA 2048 bits	Active
s2	SendGrid	RSA 1024 bits · short	Active

RSA keys shorter than 2048 bits, called short keys, are discouraged: they are easier to break.

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

nbc.ca  MX  10 mx1.nbc.ca.
nbc.ca  MX  20 mx2.nbc.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.nbc.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

nbc.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.nbc.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.nbc.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.nbc.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.nbc.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 nbc.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	96.17.193.57
A	96.17.193.10

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
a10-65.akam.net	96.7.50.65
a26-66.akam.net	23.74.25.66
a1-62.akam.net	193.108.91.62
a4-67.akam.net	72.246.46.67
a7-65.akam.net	23.61.199.65
a5-64.akam.net	95.100.168.64

Mail servers (MX)

MX records point to the servers that receive e-mails sent to the domain, that is to @nbc.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	nbc-ca.mail.protection.outlook.com	52.101.190.3

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.nbc.ca.

Name	Content
nbc.ca	MS=ms85542814
nbc.ca	_globalsign-domain-verification=aM6qADSfdNGFOO_3J-Q69c7XX-UTo-zLvk5LjWPLyq
nbc.ca	anthropic-domain-verification-g5ej3e=6y2efOLhw6lXYuU1CAIiDdGlg
nbc.ca	_globalsign-domain-verification=hztdG9201FbLybkAl26TE9YMrrmgF38oMVXhI0KA8V
nbc.ca	00DSv00000D2sGA=1TBSv0000000Cqn
nbc.ca	00D1I000001YLps=1TBON00000008FJ
nbc.ca	docusign=8143f968-1335-4be7-aa13-5327dc489273
nbc.ca	google-site-verification=889W2k4JZ_QhE-Uu0TFDsrkcqGtDbKgUXRFfGOVpHps
nbc.ca	amazonses:cq7MTtCvSFX72T0YjgjoqnofdhIVQTypJdDJx9ou4lg=
nbc.ca	globalsign-domain-verification=59EDCA6F838B7B7156574A9DC757AAA4
nbc.ca	38bd463a-2249-472a-af43-4a0489537afc
nbc.ca	google-site-verification=qJkVHydPClJeDO8MTtvV6WvbSykelStzZ6bcM_7wiZo
nbc.ca	_pnct3f2q07ihzckd2jc70nea8f8r88g
nbc.ca	atlassian-domain-verification=n8DvwYco9Fe8VdZ3aXS2wvQ3fDBW6j3p07FNjdnFwuXHa6M5xBDYMY6vjnOgCVNf
nbc.ca	openai-domain-verification=dv-VMUL59SOFYEBvsW90lV3xJIg
nbc.ca	iContact1611098
nbc.ca	adobe-idp-site-verification=48d8bf34-8d8c-4ccb-908a-1d9e0ecb3023
nbc.ca	00DSv00000AUXws=1TBSv0000000A7R
nbc.ca	google-site-verification=qOHW69C4yXr7hGxsHqp7gzhn8lYsvfx4uxeIJHJZqU8
nbc.ca	flexera-domain-verification-syfhpceydxyxxzfj
nbc.ca	teamviewer-sso-verification=e706a7d3c2d24da4b474dda274debd01
nbc.ca	google-site-verification=kP0_YbpBsXrkv923_cRZaqgZoUEYs3RW-oeyTJnddng
nbc.ca	amazonses:f+BroPa7R/wFCQgACTXQXqZdBoGPyr2m7kO0S3jsGw8=
nbc.ca	00DSv00000DXxDG=1TBSv0000000D3h
nbc.ca	hj-ownership=Zv2M#N9ufOjo
nbc.ca	docker-verification=f42d45ae-b074-4223-957e-74ddf633a6ff
nbc.ca	axway-amplify=376255e4-b12e-4639-baeb-0464e2037d6d
nbc.ca	jetbrains-domain-verification=clca5uedq1hxnibo3r97r76tg
nbc.ca	ZOOM_verify_oZjt9Aq2E4hff4Ej8IudkD
nbc.ca	globalsign-domain-verification=AA905113A95755A10DB2EE872CD85105
nbc.ca	flexera-domain-verification-byuohzvyrdmahglt
nbc.ca	amazonses:9jpZ38yKVxtYAyQyyoFFemPT9d/xppYNa4Q2rJ1R0P8=
nbc.ca	jamf-site-verification=QcRqEGHpo-ys4g1nnwiRcQ
nbc.ca	_nihjusgx2j9c7g3gz65ppd15a9k3i4y
nbc.ca	cisco-ci-domain-verification=150345ad95172c4eff5ab71c5e27a22ed9d8f4f916b72f978245e80a62101606
nbc.ca	docusign=13f60f29-444c-4c9d-a36a-c3b841492a6f
nbc.ca	facebook-domain-verification=4kj7amblrtfd9e1yozqqosq7s9079i
nbc.ca	00DSv00000B6PIO=1TBSv0000000Bmg
nbc.ca	atlassian-domain-verification=z46xa49wYM/hjJ3gjhgRYybKlrWlGNbgVAf4KNNykEe0POYxj6J7Q9mz1FJZBiZf
nbc.ca	v=spf1 ip4:164.55.253.249 ip4:164.55.251.249 include:_spf.bluematrix.com include:amazonses.com include:spf.protection.outlook.com a:mailhybrid.bnc.ca include:spf-ca.wfs.cloud include:_spf.salesforce.com -all
nbc.ca	vmware-cloud-verification-7eb835b5-eb4d-4864-bf28-e12b0066953d
nbc.ca	google-site-verification=5Ktjq7rLQwjkOJyDAKwzZvgjLxXuqV3MqWyefzamyqY
nbc.ca	slack-domain-verification=OelcNJ3rVQOPT4sBMeMAJg5JHkSUWxgQDXzARRPA
nbc.ca	snowflake-verification=cd69e028-019f-1000-8018-0000000003f5
nbc.ca	_globalsign-domain-verification=8z0ctSnCKSQNyW52n8nCEqnvZAr1gz9G9XQTiUV6P6
_dmarc.nbc.ca	v=DMARC1;p=reject;rua=mailto:[email protected];ruf=mailto:[email protected];fo=0
selector1._domainkey.nbc.ca	v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArroJEeXc/1CLBk17pD+rJFOqBRBo/1kfJOyR+gPCeIGhBhCeKXATjwpIXMgaOLP7YMQ3uHR12ioZmM+4yn5vNRCe+ZnSwkV+0OrNdli1WOnhhP4jHM1YBaind/tlsHkigupNMUsNaWi+d3+ReR1pDl8SHrFPh78PzRb0DaQgCNsh3k/TCW+NxLAmxG9Y+ODRZvNhxb/JkXwTvjFJBRks3+xHgQPj6uUFL3chANYIUUak22fjt94f71GgwMfzTs0jij/45cURMnT2wconLK6SRgOMaVh+wxHUXtBUxeBW/bskyKeqpZMyWDi9m0pbcMaiNwN5r08AOdSSGbuhVUYI6QIDAQAB;
selector2._domainkey.nbc.ca	v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx1jMhx98ItsFDlKiZ/VZSDpeSn6mgE+ScgNLa6rXTpRZq1W6S5Kei2d9oEPSRwjzySFaR0PdpJvTE9nLSDrzVhzrl4YCqnFclW7CRlbMW2n2HkZoE4ZrUPKke/WBQF0QdckSfDkJEWbkPXU4a0bry/4DJqJ0ZMI1TEgnbzZnn0HGz9WQP2F25Nw7iOoM1xkTZOIariQ5NY7oGRz/IsdQ84gaztq40LwH5uRpmNmyZPslgGXZInhVW8rAPOXi7bQbvlLj47LjnhuqKjTUyLeWlsFCln57xPXOnJg2w51XEIJRl7f9Bj4IgtJNnYk+My1MocKEa8RbI3+KGS0uf/snyQIDAQAB;
s1._domainkey.nbc.ca	k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsG+c0Vkj0WS2uGveatiyfqr1Ww/PjE8oRsy4csDWmKPU3l2AgrvDOiYyIjZquZiL6F+u85PfN2mP/c7TRyrN2IS2kHWnvUsQB8Cg+NIrUB3U51TSMPgO/fmobl/mE0C8qC0w6NVEyLBinOVOQhpAplb1ul47MwCVU8sK6rwRjI0Dxld/s1p+U+KJaH7EjkO6cOIsZJJsQo58fXvJU+eKwuFWLqezQfjmYiX2GZNVjnXmCp43/+Obd0yw+QtuE49J7BNsJroB81EoXTHOzD7F6LSKOmUn5juNfOcavGi/mHD16do4O0ov4LebJA2fvIN+T+Ft48luv0nLRW6MZi1B2wIDAQAB
s2._domainkey.nbc.ca	k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDXc41nWhCS0Eyi03myewYNtZ762PndeS72DBhQuXe1/Z4PdBzCnw1oNRnPVz9OK3ja49YPyhKxXTkwqRb9HqejHdLIVUMzRehJmM5ZXfIhPDaSyH64Y1ZtzUvzTJDXk7oFL1jBACIciyBhvYb7XQE6zGQvYkjSooNvzvz8FsAYCwIDAQAB

Related IP addresses

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

IP address	Used for	/24 block
96.17.193.57	Website	96.17.193.0/24
96.17.193.10	Website	96.17.193.0/24
96.7.50.65	Name server a10-65.akam.net	96.7.50.0/24
23.74.25.66	Name server a26-66.akam.net	23.74.25.0/24
193.108.91.62	Name server a1-62.akam.net	193.108.91.0/24
72.246.46.67	Name server a4-67.akam.net	72.246.46.0/24
23.61.199.65	Name server a7-65.akam.net	23.61.199.0/24
95.100.168.64	Name server a5-64.akam.net	95.100.168.0/24
52.101.190.3	Mail server nbc-ca.mail.protection.outlook.com	52.101.190.0/24
164.55.253.249	Authorized by SPF	164.55.253.0/24
164.55.251.249	Authorized by SPF	164.55.251.0/24

WHOIS of the domain nbc.ca

Domain Name: nbc.ca
Registry Domain ID: D2103-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: webnames.ca
Updated Date: 2026-08-29T15:03:43Z
Creation Date: 2000-09-29T14:16:55Z
Registry Expiry Date: 2027-02-13T05:00:00Z
Registrar: Webnames.ca Inc.
Registrar IANA ID: 456
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +1.8662217878
Registrar Abuse Contact Phone Ext:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: 3812766-CIRA
Registrant Name: Canaux BNC
Registrant Organization: Banque Nationale du Canada
Registrant Street: 22-800 RUE SAINT-JACQUES
Registrant City: Montréal
Registrant State/Province: QC
Registrant Postal Code: H3C1A3
Registrant Country: CA
Registrant Phone: +1.5143971227
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: [email protected]
Registry Admin ID: 3812609-CIRA
Admin Name: Canaux BNC
Admin Organization: Banque Nationale du Canada
Admin Street: 22-800 RUE SAINT-JACQUES
Admin City: Montréal
Admin State/Province: QC
Admin Postal Code: H3C1A3
Admin Country: CA
Admin Phone: +1.5143971227
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: [email protected]
Registry Tech ID: 3812767-CIRA
Tech Name: Canaux BNC
Tech Organization: Banque Nationale du Canada
Tech Street: 22-800 RUE SAINT-JACQUES
Tech City: Montréal
Tech State/Province: QC
Tech Postal Code: H3C1A3
Tech Country: CA
Tech Phone: +1.5143971227
Tech Phone Ext:
Tech Fax:
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: a1-62.akam.net
Name Server: a10-65.akam.net
Name Server: a26-66.akam.net
Name Server: a4-67.akam.net
Name Server: a5-64.akam.net
Name Server: a7-65.akam.net
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-10-01T18:51:33Z <<<

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: nbc.ca
Registry Domain ID: D2103-CIRA
Registrar WHOIS Server: whois.ca.fury.ca
Registrar URL: webnames.ca
Updated Date: 2026-08-29T15:03:43Z
Creation Date: 2000-09-29T14:16:55Z
Registry Expiry Date: 2027-02-13T05:00:00Z
Registrar: Webnames.ca Inc.
Registrar IANA ID: 456
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +1.8662217878
Registrar Abuse Contact Phone Ext:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: 3812766-CIRA
Registrant Name: Canaux BNC
Registrant Organization: Banque Nationale du Canada
Registrant Street: 22-800 RUE SAINT-JACQUES
Registrant City: Montréal
Registrant State/Province: QC
Registrant Postal Code: H3C1A3
Registrant Country: CA
Registrant Phone: +1.5143971227
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: [email protected]
Registry Admin ID: 3812609-CIRA
Admin Name: Canaux BNC
Admin Organization: Banque Nationale du Canada
Admin Street: 22-800 RUE SAINT-JACQUES
Admin City: Montréal
Admin State/Province: QC
Admin Postal Code: H3C1A3
Admin Country: CA
Admin Phone: +1.5143971227
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: [email protected]
Registry Tech ID: 3812767-CIRA
Tech Name: Canaux BNC
Tech Organization: Banque Nationale du Canada
Tech Street: 22-800 RUE SAINT-JACQUES
Tech City: Montréal
Tech State/Province: QC
Tech Postal Code: H3C1A3
Tech Country: CA
Tech Phone: +1.5143971227
Tech Phone Ext:
Tech Fax:
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: a1-62.akam.net
Name Server: a10-65.akam.net
Name Server: a26-66.akam.net
Name Server: a4-67.akam.net
Name Server: a5-64.akam.net
Name Server: a7-65.akam.net
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-10-01T18:51:33Z <<<

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: 652 msec
% WHEN: Thu Oct 01 18:51:32 UTC 2026