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Last Updated:

T-com.ne.jp

Safe to Send

T-com.ne.jp is operated by T-COM (TOKAI Communications). The domain runs 1 mail exchange and SMTP is responsive, with 2 of 3 authentication standards in place.

Safe to Send
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Verify @t-com.ne.jp emails

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

@t-com.ne.jp
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4.9/5
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The risk score saves my team probably an hour a day in manual prospect research. We sort outreach lists by it and skip anything in the high-risk band. Bounce rate is the lowest it's ever been. Lisa Fonseca · SDR Team 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 t-com.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
mailgw3.oneoffice.jp 211.7.82.7
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 mailgw3.oneoffice.jp ESMTP
Primary mail server accepted SMTP connection and returned a banner during the live audit.

t-com.ne.jp Email Authentication SPF · DKIM · DMARC

2/3 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. Pass
TXTv=spf1 include:gemini.oneoffice.jp include:spf01.t-com.ne.jp include:spf02.t-com.ne.jp include:spf.repica.jp include:spf-bma.mpme.jp ~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 t-com.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. Quarantine
TXTv=DMARC1; p=quarantine; sp=none; rua=mailto:rua-mpse@mpub.ne.jp
Receivers are instructed to quarantine (route to spam) any mail that fails SPF or DKIM.

t-com.ne.jp Domain Registration WHOIS · Nameservers · Registrar

24 YEARS OLD
RegisteredAugust 8, 2001
Last UpdatedAugust 31, 2025
ExpiresAugust 31, 2026
Age24 years
TLD.ne.jp
Authoritative Nameservers (2)
  • dns1.tokai.or.jp
  • dns2.tokai.or.jp
Registrant
@TCOM Internet Service
About this Domain

About t-com.ne.jp

t-com.ne.jp is the email domain for T-com (TNC), a Japanese internet service provider operated by TOKAI Communications. T-com provides broadband, fiber, and mobile internet services across Japan, with email accounts provided to subscribers through the t-com.ne.jp domain.

t-com.ne.jp supports SPF and DKIM authentication. DMARC policies follow standard Japanese ISP configurations.

The t-com.ne.jp mail servers validate recipients during SMTP sessions and apply comprehensive filtering typical of Japanese ISP systems.

For delivery to t-com.ne.jp, authenticate with SPF and DKIM, warm up IPs gradually, and comply with Japanese anti-spam regulations.

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Common Questions About t-com.ne.jp

Is t-com.ne.jp a disposable or temporary email provider?
No. t-com.ne.jp is not a disposable email provider. It is classified as ISP Email Provider operated by T-COM (TOKAI Communications) and addresses on t-com.ne.jp are persistent rather than throwaway. Mail sent to a valid t-com.ne.jp mailbox reaches a real recipient.
How do I verify if a t-com.ne.jp email address is valid?
The fastest way to verify a t-com.ne.jp email address is to use our free email checker. Enter any @t-com.ne.jp mailbox at the top of this page and our system performs a real-time SMTP handshake against t-com.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 t-com.ne.jp email exists without sending a message?
Yes. Our real-time email verification API connects directly to t-com.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 t-com.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 t-com.ne.jp?
t-com.ne.jp currently publishes 1 mail exchange (MX) record. The primary MX is mailgw3.oneoffice.jp, which is the first server contacted when other mail systems try to deliver email to a t-com.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 t-com.ne.jp.
Does t-com.ne.jp use SPF, DKIM, and DMARC email authentication?
t-com.ne.jp 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 t-com.ne.jp mail.
Why do emails to t-com.ne.jp bounce or get blocked?
Bounces from t-com.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 t-com.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 t-com.ne.jp's receivers trust you.
How can I verify a large list of t-com.ne.jp email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of t-com.ne.jp addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, t-com.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 t-com.ne.jp email addresses?
Yes, with normal hygiene. t-com.ne.jp is a legitimate email service and signups from @t-com.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 t-com.ne.jp by default.
What email format does t-com.ne.jp use for usernames?
Most t-com.ne.jp mailboxes follow common patterns like first.last@t-com.ne.jp, firstinitiallast@t-com.ne.jp, or first@t-com.ne.jp, but the actual local-part rules depend on T-COM (TOKAI Communications). The only reliable way to confirm whether a specific @t-com.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 t-com.ne.jp risk score calculated?
The 0-to-100 risk score for t-com.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 t-com.ne.jp score is recomputed on every audit so it always reflects the live state of the domain.
Is t-com.ne.jp a valid email domain?
Yes, t-com.ne.jp is a valid email domain operated by T-com/TOKAI Communications, a Japanese ISP providing broadband and fiber services across Japan.
Is t-com.ne.jp a disposable or temporary email service?
No, t-com.ne.jp is not a disposable or temporary email service. It is a permanent ISP email domain provided by T-com to its internet subscribers in Japan.
What mail servers does t-com.ne.jp use?
t-com.ne.jp uses mail servers managed by TOKAI Communications infrastructure. The MX records direct inbound email to their gateways for filtering and delivery.
Can I send marketing emails to t-com.ne.jp addresses?
You can send marketing emails to t-com.ne.jp addresses with valid opt-in consent. Authenticate with SPF and DKIM, comply with Japanese anti-spam law, and honor opt-out requests.
How do I verify a t-com.ne.jp email address?
You can verify a t-com.ne.jp email address using an email verification service that checks MX records and performs SMTP-level validation to confirm the mailbox is active.