Domain Intelligence
Last Updated:

Infoweb.ne.jp

Proceed With Care

Infoweb.ne.jp is operated by InfoWeb (Fujitsu). The domain runs 1 mail exchange and SMTP is responsive, with no email authentication detected.

Proceed With Care
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Verify @infoweb.ne.jp emails

Live SMTP handshake against infoweb.ne.jp mail servers. No email is sent. 10 free per day, no signup.

@infoweb.ne.jp
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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 infoweb.ne.jp 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.

1 RECORD
#10
smmx.nifty.com 111.96.116.217
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 nifty.com ESMTP Service ready
Primary mail server accepted SMTP connection and returned a banner during the live audit.

infoweb.ne.jp Email Authentication SPF · DKIM · DMARC

0/3 PASS
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. Missing
No SPF TXT record published for infoweb.ne.jp.
No valid SPF record was published. Receivers cannot confirm which servers are allowed to send mail for this domain.
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 infoweb.ne.jp.
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. Missing
No DMARC record published at _dmarc.infoweb.ne.jp.
No DMARC policy is published. Receivers have no instruction for handling failed messages from this domain.

infoweb.ne.jp Domain Registration WHOIS · Nameservers · Registrar

29 YEARS OLD
RegisteredJanuary 22, 1997
Last UpdatedJanuary 31, 2026
ExpiresJanuary 31, 2027
Age29 years
TLD.ne.jp
Authoritative Nameservers (3)
  • ns.web.ad.jp
  • ns2.web.ad.jp
  • ns3.web.ad.jp
Registrant
InfoWeb
About this Domain

About infoweb.ne.jp

infoweb.ne.jp is the email domain for InfoWeb, a Japanese internet service formerly operated by Fujitsu. InfoWeb provided dial-up and broadband internet access along with email services to Japanese customers. The service was later integrated into @nifty (also operated by Fujitsu subsidiary NIFTY Corporation). Legacy infoweb.ne.jp accounts may still be maintained.

infoweb.ne.jp supports SPF records for sender authentication through Fujitsu/NIFTY infrastructure. DKIM and DMARC configurations follow standard Japanese ISP practices.

The infoweb.ne.jp mail servers validate recipients during SMTP sessions and apply anti-spam filtering typical of Japanese ISP mail systems, including greylisting for unfamiliar senders.

For delivery to infoweb.ne.jp, authenticate with SPF and DKIM, warm up IPs gradually, and comply with Japanese anti-spam regulations. Japanese ISPs apply strict filtering to international senders.

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Common Questions About infoweb.ne.jp

Is infoweb.ne.jp a disposable or temporary email provider?
No. infoweb.ne.jp is not a disposable email provider. It is classified as ISP Email Provider operated by InfoWeb (Fujitsu) and addresses on infoweb.ne.jp are persistent rather than throwaway. Mail sent to a valid infoweb.ne.jp mailbox reaches a real recipient.
How do I verify if a infoweb.ne.jp email address is valid?
The fastest way to verify a infoweb.ne.jp email address is to use our free email checker. Enter any @infoweb.ne.jp mailbox at the top of this page and our system performs a real-time SMTP handshake against infoweb.ne.jp'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 infoweb.ne.jp email exists without sending a message?
Yes. Our real-time email verification API connects directly to infoweb.ne.jp'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 infoweb.ne.jp mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for infoweb.ne.jp?
infoweb.ne.jp currently publishes 1 mail exchange (MX) record. The primary MX is smmx.nifty.com, which is the first server contacted when other mail systems try to deliver email to a infoweb.ne.jp 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 infoweb.ne.jp.
Does infoweb.ne.jp use SPF, DKIM, and DMARC email authentication?
infoweb.ne.jp does not currently publish any of the three standard email authentication records (SPF, DKIM, DMARC). This means receivers have no automated way to confirm whether mail claiming to come from @infoweb.ne.jp is legitimate, which can hurt deliverability and increases the risk of spoofing.
Why do emails to infoweb.ne.jp bounce or get blocked?
Bounces from infoweb.ne.jp 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 infoweb.ne.jp'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 infoweb.ne.jp's receivers trust you.
How can I verify a large list of infoweb.ne.jp email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of infoweb.ne.jp addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, infoweb.ne.jp 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 infoweb.ne.jp email addresses?
Yes, with normal hygiene. infoweb.ne.jp is a legitimate email service and signups from @infoweb.ne.jp 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 infoweb.ne.jp by default.
What email format does infoweb.ne.jp use for usernames?
Most infoweb.ne.jp mailboxes follow common patterns like first.last@infoweb.ne.jp, firstinitiallast@infoweb.ne.jp, or first@infoweb.ne.jp, but the actual local-part rules depend on InfoWeb (Fujitsu). The only reliable way to confirm whether a specific @infoweb.ne.jp 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 infoweb.ne.jp risk score calculated?
The 0-to-100 risk score for infoweb.ne.jp 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 infoweb.ne.jp score is recomputed on every audit so it always reflects the live state of the domain.
Is infoweb.ne.jp a valid email domain?
Yes, infoweb.ne.jp is a valid email domain originally operated by Fujitsu's InfoWeb internet service. Legacy accounts may be maintained under NIFTY/@nifty infrastructure in Japan.
Is infoweb.ne.jp a disposable or temporary email service?
No, infoweb.ne.jp is not a disposable or temporary email service. It is a permanent ISP email domain from Fujitsu's InfoWeb service that served Japanese internet users.
What mail servers does infoweb.ne.jp use?
infoweb.ne.jp uses mail servers within Fujitsu/NIFTY infrastructure in Japan. The MX records direct inbound email to gateways handling filtering and delivery for legacy InfoWeb accounts.
Can I send marketing emails to infoweb.ne.jp addresses?
You can send marketing emails to infoweb.ne.jp addresses with valid opt-in consent. Authenticate with SPF and DKIM, comply with Japanese anti-spam law, and provide clear opt-out options.
How do I verify an infoweb.ne.jp email address?
You can verify an infoweb.ne.jp email address using an email verification service that checks MX records and performs SMTP-level validation to confirm the mailbox is active.