Domain Intelligence
Last Updated:
Lumos.net
Safe to Send
Lumos.net is operated by Lumos Networks. The domain runs 2 mail exchanges and SMTP is responsive, with 2 of 3 authentication standards in place.
Safe to Send
RISK
27
/100
Low
Verify Mailbox
Verify @lumos.net emails
Live SMTP handshake against lumos.net 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
2
Mail exchangers
Mail Exchange (MX) Records for lumos.net 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
mx1c28.carrierzone.com 66.226.70.78
Reachable
#100
mx2c28.carrierzone.com 66.226.70.79
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 mail58c28.carrierzone.com ESMTP Sendmail 8.14.9/8.13.1; Wed, 13 May 2026 11:10:45 -0400
Primary mail server accepted SMTP connection and returned a banner during the live audit.
lumos.net 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 ip4:64.4.111.191 a mx include:spfc28.carrierzone.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.
Missing
No DKIM signature detected on common selectors for lumos.net.
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.
None
TXTv=DMARC1; p=none; pct=100; rua=mailto:it.techs@lumosfiber.com; ruf=mailto:it.techs@lumosfiber.com; fo=1
Monitoring only. Receivers take no action when SPF or DKIM fails.
lumos.net Domain Registration WHOIS · Nameservers · Registrar
RegistrarTUCOWS.COM, CO.
IANA ID69
RegisteredOctober 1, 2009
Last UpdatedApril 21, 2025
ExpiresOctober 1, 2027
Age16 years
TLD.net
Authoritative Nameservers (2)
- ns1.lumos.net
- ns2.lumos.net
Registrant
Hidden by registrar privacy service
About this Domain
About lumos.net
lumos.net is the email domain for Lumos Networks, a US fiber-optic internet and telecommunications provider serving communities in Virginia, West Virginia, and parts of the mid-Atlantic region. Lumos provides high-speed internet, voice, and data services, offering email accounts to its broadband subscribers.
lumos.net supports SPF records for sender authentication. DKIM and DMARC configurations follow standard regional US telecom practices. Proper authentication is recommended for reliable delivery to lumos.net mailboxes.
The lumos.net mail servers validate recipients during SMTP sessions, rejecting invalid addresses. Standard anti-spam filtering evaluates sender reputation and content quality.
For delivery to lumos.net, authenticate with SPF and DKIM, maintain clean lists, and comply with CAN-SPAM. As a regional fiber provider, Lumos monitors complaint rates closely within its subscriber base.
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Common Questions About lumos.net
Is lumos.net a disposable or temporary email provider?
No. lumos.net is not a disposable email provider. It is classified as ISP Email Provider operated by Lumos Networks and addresses on lumos.net are persistent rather than throwaway. Mail sent to a valid lumos.net mailbox reaches a real recipient.
How do I verify if a lumos.net email address is valid?
The fastest way to verify a lumos.net email address is to use our free email checker. Enter any @lumos.net mailbox at the top of this page and our system performs a real-time SMTP handshake against lumos.net'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 lumos.net email exists without sending a message?
Yes. Our real-time email verification API connects directly to lumos.net'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 lumos.net mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for lumos.net?
lumos.net currently publishes 2 mail exchange (MX) records. The primary MX is mx1c28.carrierzone.com, which is the first server contacted when other mail systems try to deliver email to a lumos.net 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 lumos.net.
Does lumos.net use SPF, DKIM, and DMARC email authentication?
lumos.net has 2 of the 3 standard email authentication records in place: SPF, and DMARC (policy: none). Adding the missing layer(s) would tighten anti-spoofing protection and improve deliverability for legitimate lumos.net mail.
Why do emails to lumos.net bounce or get blocked?
Bounces from lumos.net 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 lumos.net'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 lumos.net's receivers trust you.
How can I verify a large list of lumos.net email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of lumos.net addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, lumos.net 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 lumos.net email addresses?
Yes, with normal hygiene. lumos.net is a legitimate email service and signups from @lumos.net 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 lumos.net by default.
What email format does lumos.net use for usernames?
Most lumos.net mailboxes follow common patterns like first.last@lumos.net, firstinitiallast@lumos.net, or first@lumos.net, but the actual local-part rules depend on Lumos Networks. The only reliable way to confirm whether a specific @lumos.net 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 lumos.net risk score calculated?
The 0-to-100 risk score for lumos.net 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 lumos.net score is recomputed on every audit so it always reflects the live state of the domain.
Is lumos.net a valid email domain?
Yes, lumos.net is a valid email domain operated by Lumos Networks, a fiber-optic internet provider serving Virginia, West Virginia, and mid-Atlantic communities.
Is lumos.net a disposable or temporary email service?
No, lumos.net is not a disposable or temporary email service. It is a permanent ISP email domain provided by Lumos Networks to its broadband subscribers.
What mail servers does lumos.net use?
lumos.net uses mail servers operated by Lumos Networks infrastructure. The MX records direct inbound email to Lumos gateways for filtering and delivery to subscriber accounts.
Can I send marketing emails to lumos.net addresses?
You can send marketing emails to lumos.net addresses with valid opt-in consent. Authenticate with SPF and DKIM, comply with CAN-SPAM, and maintain low complaint rates.
How do I verify a lumos.net email address?
You can verify a lumos.net email address using an email verification tool that checks MX records and performs SMTP-level validation to confirm the mailbox is active and deliverable.