Domain Intelligence
Last Updated:
Fastweb.it
Safe to Send
Fastweb.it is operated by Fastweb. The domain runs 2 mail exchanges and SMTP is responsive, with all three authentication standards in force.
Safe to Send
RISK
10
/100
Low
Verify Mailbox
Verify @fastweb.it emails
Live SMTP handshake against fastweb.it 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
Plugged the realtime API into our signup form on a Saturday afternoon. Caught 14 disposable domains in the first hour. Setup was honestly easier than the docs implied. Marcus Tanaka · Co-founder, B2B SaaS
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
2
Mail exchangers
Mail Exchange (MX) Records for fastweb.it 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
mxb-004ae901.gslb.pphosted.com 143.55.146.204
Reachable
#10
mxa-004ae901.gslb.pphosted.com 143.55.149.110
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 mx07-004ae901.pphosted.com ESMTP mfa-m0335500
Primary mail server accepted SMTP connection and returned a banner during the live audit.
fastweb.it 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 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~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.
Pass
SELECTORDetected via standard selectors
A DKIM signature was detected. Outbound mail from this domain can be cryptographically verified.
DMARC
Domain-based Message Authentication, Reporting & Conformance. Tells receivers what to do when SPF or DKIM checks fail: none, quarantine, or reject.
Reject
TXTv=DMARC1;p=reject;sp=none;pct=100;rua=mailto:dmarc_rua@emaildefense.proofpoint.com;ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;ri=86400;fo=1;adkim=r;aspf=r;
Strict policy. Receivers are instructed to reject any mail that fails SPF or DKIM. The strongest available setting.
fastweb.it Domain Registration WHOIS · Nameservers · Registrar
RegistrarFastweb s.p.a.
IANA ID2846
RegisteredJanuary 25, 2000
Last UpdatedMarch 16, 2026
ExpiresFebruary 28, 2027
Age26 years
TLD.it
Authoritative Nameservers (2)
- dns3.fastweb.it
- dns4.fastweb.it
Registrant
Fastweb S.p.A.
Milano, MI, ITALY
Technical Contact
Gestione Domini
Fastweb S.p.A.
Milano, MI, ITALY
About this Domain
About fastweb.it
fastweb.it is an Italian ISP domain from Fastweb, one of Italy's major broadband providers now owned by Swisscom. Based in Milan, Fastweb provides fiber broadband, mobile, and TV services to Italian consumers and businesses.
fastweb.it implements SPF and DKIM authentication. The service complies with Italian and EU GDPR regulations.
The fastweb.it mail servers enforce recipient verification and reject invalid addresses. The domain does not function as catch-all.
For delivery to fastweb.it, authenticate with SPF and DKIM. Comply with Italian anti-spam regulations.
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Common Questions About fastweb.it
Is fastweb.it a disposable or temporary email provider?
No. fastweb.it is not a disposable email provider. It is classified as ISP Email Provider operated by Fastweb and addresses on fastweb.it are persistent rather than throwaway. Mail sent to a valid fastweb.it mailbox reaches a real recipient.
How do I verify if a fastweb.it email address is valid?
The fastest way to verify a fastweb.it email address is to use our free email checker. Enter any @fastweb.it mailbox at the top of this page and our system performs a real-time SMTP handshake against fastweb.it'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 fastweb.it email exists without sending a message?
Yes. Our real-time email verification API connects directly to fastweb.it'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 fastweb.it mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for fastweb.it?
fastweb.it currently publishes 2 mail exchange (MX) records. The primary MX is mxb-004ae901.gslb.pphosted.com, which is the first server contacted when other mail systems try to deliver email to a fastweb.it 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 fastweb.it.
Does fastweb.it use SPF, DKIM, and DMARC email authentication?
fastweb.it enforces all three email authentication standards: SPF, DKIM, and DMARC (policy: reject). This is the gold-standard configuration. It means receivers can verify that mail claiming to come from @fastweb.it is genuine, and fastweb.it's DMARC policy of 'reject' instructs receivers how to handle messages that fail those checks.
Why do emails to fastweb.it bounce or get blocked?
Bounces from fastweb.it 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 fastweb.it'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 fastweb.it's receivers trust you.
How can I verify a large list of fastweb.it email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of fastweb.it addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, fastweb.it 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 fastweb.it email addresses?
Yes, with normal hygiene. fastweb.it is a legitimate email service and signups from @fastweb.it 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 fastweb.it by default.
What email format does fastweb.it use for usernames?
Most fastweb.it mailboxes follow common patterns like first.last@fastweb.it, firstinitiallast@fastweb.it, or first@fastweb.it, but the actual local-part rules depend on Fastweb. The only reliable way to confirm whether a specific @fastweb.it 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 fastweb.it risk score calculated?
The 0-to-100 risk score for fastweb.it 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 fastweb.it score is recomputed on every audit so it always reflects the live state of the domain.
Is fastweb.it a valid ISP email domain?
Yes, fastweb.it is a valid email domain provided by Fastweb to its internet subscribers. It is a legitimate ISP-issued email address.
Is fastweb.it a disposable or temporary email provider?
No, fastweb.it is not a disposable or temporary email provider. It is an ISP-provided email service tied to an internet subscription from Fastweb.
What mail server does fastweb.it use?
fastweb.it uses mail servers operated by Fastweb. Check the MX records section above for specific server details and authentication configuration.
Can I send marketing emails to fastweb.it addresses?
Yes, you can send marketing emails to fastweb.it addresses with proper opt-in consent. ISP email providers apply spam filtering, and addresses may become inactive if subscribers cancel their internet service. Regular list verification is recommended.
How do I verify an email address at fastweb.it?
Use BulkEmailChecker to verify fastweb.it addresses via SMTP checks. ISP domains may have specific rate limiting or greylisting behaviors. Our tool handles these provider-specific configurations automatically.