Domain Intelligence
Last Updated:
Noos.fr
Safe to Send
Noos.fr is operated by Noos. The domain runs 1 mail exchange and SMTP is responsive, with 2 of 3 authentication standards in place.
Safe to Send
RISK
27
/100
Low
Verify Mailbox
Verify @noos.fr emails
Live SMTP handshake against noos.fr mail servers. No email is sent. 10 free per day, no signup.
Trusted by 400,000+ senders
4.9/5
From 8,500+ verified reviews
We had a sender reputation crisis after a list import went badly. Used the bulk verifier to scrub everything, then plugged the API into our signup form. Took deliverability from 73% to 96% over six weeks. Sarah Knowles · Email Marketing Lead
SOC 2 Type II
GDPR
CCPA
99.7% Accuracy
Disposable
No
Persistent addresses, not throwaway
SMTP Live
Yes
Mail server responds to SMTP handshake
MX Records
1
Mail exchangers
Mail Exchange (MX) Records for noos.fr Mail Exchange records. They tell other mail servers which hosts are responsible for receiving email at this domain, in priority order. Lower priority numbers are tried first.
#10
smtp-in.sfr.fr 93.17.128.165
Reachable
SMTP Handshake
Simple Mail Transfer Protocol. We open a live SMTP connection to the primary MX and read the greeting banner. A response confirms the mail server is alive and accepting connections.
Responsive
BANNER220-msfrf2602.sfr.fr ESMTP **************************
Primary mail server accepted SMTP connection and returned a banner during the live audit.
noos.fr Email Authentication SPF · DKIM · DMARC
SPF
Sender Policy Framework. A DNS record listing which servers are allowed to send mail for this domain. Receivers reject or flag mail from unauthorized servers.
Pass
TXTv=spf1 ip4:93.17.128.0/24 -all
Authorized senders are defined and pass SPF policy.
DKIM
DomainKeys Identified Mail. The sending server cryptographically signs outbound mail with a private key, and receivers verify the signature using a public key in DNS.
Missing
No DKIM signature detected on common selectors for noos.fr.
No DKIM signature was detected. Receivers cannot verify the integrity of outbound mail.
DMARC
Domain-based Message Authentication, Reporting & Conformance. Tells receivers what to do when SPF or DKIM checks fail: none, quarantine, or reject.
Quarantine
TXTv=DMARC1; p=quarantine; sp=reject; adkim=s; aspf=s; rua=mailto:dmarc_report_agg@sfr.fr,mailto:sfr@rua.netcraft.com; ruf=mailto:dmarc_report_err@sfr.fr,mailto:sfr@ruf.netcraft.com; fo=1
Receivers are instructed to quarantine (route to spam) any mail that fails SPF or DKIM.
noos.fr Domain Registration WHOIS · Nameservers · Registrar
RegistrarSFR
RegisteredDecember 12, 1999
Last UpdatedFebruary 11, 2026
ExpiresDecember 27, 2026
Age26 years
TLD.fr
Authoritative Nameservers (2)
- ns1pub.sfr.fr
- ns2pub.sfr.fr
Registrant
NUMERICABLE
ingenierie.systeme@ncnumericable.com·FRANCE·33177468126
Technical Contact
SOCIETE FRANCAISE DU RADIOTELEPHONE - SFR
domaine@sfr.com·FRANCE·33185060000
About this Domain
About noos.fr
noos.fr is the email domain for Noos, a former French cable internet service provider. Noos was acquired by Numericable (later SFR/Altice France). Legacy noos.fr email accounts continue to be maintained within the SFR infrastructure for existing subscribers.
noos.fr supports SPF authentication through SFR/Altice infrastructure. DKIM and DMARC configurations follow SFR standards. Proper authentication alignment helps ensure delivery to noos.fr mailboxes.
The noos.fr mail servers, managed by SFR, validate recipients and apply anti-spam filtering including reputation evaluation and content analysis.
For delivery to noos.fr, authenticate with SPF and DKIM, maintain clean lists, and comply with French CNIL guidelines and GDPR. SFR delivery practices apply to legacy Noos domains.
Other Domains Similar to noos.fr
Other isp email provider domains we've audited. Click any one to see its MX records, authentication, and risk score.
chattanooga.net
Chattanooga Online
zeelandnet.nl
ZeelandNet
izzi.mx
izzi Telecom
fibertel.com.ar
Fibertel (Cablevision)
seed.net.tw
Seednet
northwestel.ca
Northwestel Inc.
elisa.com
Elisa
jio.com
Reliance Jio
vivo.com.br
Vivo (Telefonica Brasil)
tele2.nl
Tele2 Netherlands
bouygues.com
Bouygues Telecom
planet.nl
Planet Internet
consolidated.net
Consolidated Communications
unitymedia.de
Unitymedia
predialnet.com.br
PredialNet
telia.com
Telia Company
frontier.com
Frontier Communications
ocn.ne.jp
OCN (NTT Communications)
sky.com
Sky Group
optus.com.au
Optus
More Email Verification Tools
Free single-address checks, bulk uploads, and APIs for plugging email verification into your own product.
Common Questions About noos.fr
Is noos.fr a disposable or temporary email provider?
No. noos.fr is not a disposable email provider. It is classified as ISP Email Provider operated by Noos and addresses on noos.fr are persistent rather than throwaway. Mail sent to a valid noos.fr mailbox reaches a real recipient.
How do I verify if a noos.fr email address is valid?
The fastest way to verify a noos.fr email address is to use our free email checker. Enter any @noos.fr mailbox at the top of this page and our system performs a real-time SMTP handshake against noos.fr's mail servers, confirming whether the mailbox exists, is reachable, and is safe to send to. No email is ever delivered during the check.
Can I check if a noos.fr email exists without sending a message?
Yes. Our real-time email verification API connects directly to noos.fr's mail server, opens an SMTP session, and queries the mailbox using the RCPT TO command without ever transmitting an actual email. The server's response confirms whether the noos.fr mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for noos.fr?
noos.fr currently publishes 1 mail exchange (MX) record. The primary MX is smtp-in.sfr.fr, which is the first server contacted when other mail systems try to deliver email to a noos.fr address. The full list with priorities and IP addresses is in the MX Records panel above. MX records tell sending servers where to route email for noos.fr.
Does noos.fr use SPF, DKIM, and DMARC email authentication?
noos.fr has 2 of the 3 standard email authentication records in place: SPF, and DMARC (policy: quarantine). Adding the missing layer(s) would tighten anti-spoofing protection and improve deliverability for legitimate noos.fr mail.
Why do emails to noos.fr bounce or get blocked?
Bounces from noos.fr usually fall into three buckets: the mailbox doesn't exist (5xx user unknown), the inbox is full, or your sending domain isn't authenticated to noos.fr's satisfaction. The fastest fix is to run each address through a free email verifier before you send, and to make sure your own SPF, DKIM, and DMARC are configured correctly so noos.fr's receivers trust you.
How can I verify a large list of noos.fr email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of noos.fr addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, noos.fr catch-all detection, role-account detection, and disposable-domain matching. Results typically come back within minutes and previously-failed addresses on your blacklist are reprocessed for free. For continuous high-volume needs, see our unlimited email verification API.
Is it safe to accept signups from noos.fr email addresses?
Yes, with normal hygiene. noos.fr is a legitimate email service and signups from @noos.fr behave like any other real user. Pipe each address through a real-time email verifier API at the moment of signup to catch typos and dead mailboxes, but there is no need to block noos.fr by default.
What email format does noos.fr use for usernames?
Most noos.fr mailboxes follow common patterns like first.last@noos.fr, firstinitiallast@noos.fr, or first@noos.fr, but the actual local-part rules depend on Noos. The only reliable way to confirm whether a specific @noos.fr address exists is to run it through a free email verification tool. Guessing patterns will produce a high bounce rate and damage your sender reputation.
How is the noos.fr risk score calculated?
The 0-to-100 risk score for noos.fr combines disposable-domain classification, mail-server reachability, MX record presence and depth, SPF / DKIM / DMARC enforcement, DMARC policy strength, SMTP banner response, and domain age. Lower scores mean safer to send to. Disposable domains are pinned at the high end of the scale. The noos.fr score is recomputed on every audit so it always reflects the live state of the domain.
Is noos.fr a valid email domain?
Yes, noos.fr is a valid email domain originally operated by Noos, a French cable ISP, now maintained by SFR (Altice France). Legacy accounts remain active for existing subscribers.
Is noos.fr a disposable or temporary email service?
No, noos.fr is not a disposable or temporary email service. It is a permanent ISP email domain maintained by SFR for former Noos cable internet subscribers in France.
What mail servers does noos.fr use?
noos.fr uses mail servers managed by SFR/Altice infrastructure in France. The MX records direct inbound email to SFR-operated gateways for filtering and delivery.
Can I send marketing emails to noos.fr addresses?
You can send marketing emails to noos.fr addresses with valid opt-in consent. Authenticate with SPF and DKIM, comply with French CNIL regulations and GDPR, and honor unsubscribe requests.
How do I verify a noos.fr email address?
You can verify a noos.fr email address using an email verification service that checks MX records and performs SMTP-level validation to confirm the mailbox is active.