sphere.ne.jp - Email Domain Verification & Deliverability Report

Active ISP Email Provider
Organization: Sphere
Mail Server: ne.jp
Verified 4 days ago

Real-time verification data for sphere.ne.jp. View MX records, SPF/DKIM/DMARC authentication, and server deliverability status.

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MX Records for sphere.ne.jp

PriorityMail ServerIP Address
10 vma.sphere.ne.jp 210.150.255.74
20 mxa.sphere.ad.jp 210.150.250.131
30 mail.sphere.ad.jp 210.150.250.131
SMTP Status: Not Responding
SMTP Banner:
220 sphere.ne.jp ESMTP Service Ready

sphere.ne.jp uses ne.jp mail servers, which means emails are processed through ne.jp infrastructure with their built-in spam filtering and security controls.

Email Authentication for sphere.ne.jp

SPF Record Missing

No SPF record found for this domain.

DMARC Record Missing

No DMARC record found for this domain.

DKIM Not Detected

DKIM detection is limited from external scanning. The domain may use DKIM with selectors not covered by our scan.

Authentication Summary: No email authentication records were detected for sphere.ne.jp. This may indicate emails from this domain are more susceptible to spoofing.

WHOIS & Domain Information

Registration Details

Domain
sphere.ne.jp
TLD
.ne.jp
Created
1996-12-19
Updated
2025-12-31
Expires
2026-12-31
Domain Age
29 years

Registrar

Registrant Contact

Organization
InfoSphere Service

Name Servers

  • ns1.sphere.ad.jp
  • ns2.sphere.ad.jp

About sphere.ne.jp

sphere.ne.jp is the email domain for Sphere, a Japanese internet service provider. Sphere provided broadband internet and email services to Japanese customers. Legacy sphere.ne.jp email accounts continue to function within Japanese telecommunications infrastructure.

sphere.ne.jp supports SPF records for sender authentication. DKIM and DMARC configurations follow standard Japanese ISP practices.

The sphere.ne.jp mail servers validate recipients during SMTP sessions and apply anti-spam filtering typical of Japanese ISP systems.

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

How to Verify sphere.ne.jp Email Addresses

Need to check if an email address at sphere.ne.jp actually exists before you send to it? BulkEmailChecker performs deep SMTP-level validation, connecting directly to sphere.ne.jp's mail servers to confirm the mailbox is real, active, and able to receive your message. No test email is ever sent, so your sender reputation stays protected.

Verify a Single sphere.ne.jp Email
Use BulkEmailChecker's free email verification tool to instantly validate any sphere.ne.jp address. You'll get a complete deliverability report including mailbox existence, catch-all detection, disposable domain flagging, and risk scoring, all in under 3 seconds.

Verify a List of sphere.ne.jp Emails in Bulk
Have a mailing list full of sphere.ne.jp addresses? Upload your CSV or TXT file to BulkEmailChecker and verify thousands of email addresses in minutes. Our bulk verification engine runs 30+ checks per address including syntax validation, DNS resolution, SMTP handshake, and spam trap detection. Clean your list before every campaign to keep bounce rates below 2% and protect your sender score. See bulk pricing.

Verify sphere.ne.jp Emails via API in Real-Time
Building a signup form, CRM integration, or lead capture system? BulkEmailChecker's real-time verification API validates sphere.ne.jp email addresses at the point of entry, blocking invalid, disposable, and risky addresses before they enter your database. Integrate with a single API call and prevent bad data at the source.

Frequently Asked Questions

Yes, sphere.ne.jp is a valid email domain from Sphere, a Japanese ISP. Legacy email accounts remain active within Japanese telecom infrastructure.
No, sphere.ne.jp is not a disposable or temporary email service. It is a permanent ISP email domain that served Japanese internet subscribers.
sphere.ne.jp uses mail servers within Japanese telecommunications infrastructure. The MX records direct inbound email to gateways for filtering and delivery.
You can send marketing emails to sphere.ne.jp addresses with valid opt-in consent. Authenticate with SPF and DKIM, comply with Japanese anti-spam law, and honor opt-out requests.
You can verify a sphere.ne.jp email address using an email verification service that checks MX records and performs SMTP-level validation to confirm the mailbox is active.
The fastest and most accurate way to verify a sphere.ne.jp email address is to use BulkEmailChecker's free email verification tool. Simply enter the full email address and our system performs SMTP-level validation by connecting directly to sphere.ne.jp's mail servers. You'll get instant results showing whether the mailbox exists, is deliverable, and is safe to send to, all without sending a single email.
Yes. BulkEmailChecker uses SMTP verification to check if a sphere.ne.jp mailbox exists without ever delivering an email. Our system connects to the domain's mail server, performs an SMTP handshake, and queries the mail server to confirm whether the recipient address is valid. This process is completely invisible to the email recipient and does not affect your sender reputation.
Sending to invalid email addresses causes hard bounces, which directly damage your sender reputation. Internet Service Providers (ISPs) and email providers track your bounce rate, and if it exceeds 2%, your emails may start landing in spam folders or get blocked entirely. Verifying sphere.ne.jp addresses with BulkEmailChecker before sending prevents bounces and keeps your deliverability high.
BulkEmailChecker's bulk verification service lets you upload a CSV or TXT file containing thousands of sphere.ne.jp email addresses and verify them all at once. Each address goes through 30+ verification checks including syntax validation, DNS/MX lookup, SMTP verification, disposable domain detection, and spam trap identification. Results are typically ready within minutes and can be downloaded as a clean, verified list.
Email verification is the process of confirming that an email address is real, properly formatted, and capable of receiving messages. It matters because sending to invalid addresses causes bounces, damages your sender reputation, wastes marketing budget, and can get your sending IP blacklisted. BulkEmailChecker verifies addresses at the SMTP level, the most accurate method available, ensuring your emails reach real people.
MX (Mail Exchange) records are DNS entries that specify which mail servers are responsible for receiving email for a domain. When you send an email, your mail server looks up the recipient domain's MX records to find where to deliver the message. If a domain has no MX records, it cannot receive email. BulkEmailChecker checks MX records as part of every verification to confirm the domain is configured for email delivery.
A catch-all (or accept-all) domain is configured to accept email sent to any address at that domain, regardless of whether the specific mailbox exists. This makes it harder to verify individual addresses because the server always responds positively. BulkEmailChecker detects catch-all configurations and flags them in verification results so you can make informed decisions about sending to those addresses.
Yes. BulkEmailChecker offers a real-time email verification API that you can integrate into signup forms, CRM systems, lead capture tools, and any application that collects email addresses. The API validates addresses at the point of entry, blocking invalid, disposable, and risky emails before they enter your database. Integration takes just a single API call with response times under 3 seconds.

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