o2online.de

Valid Email Server
Domain Lookup › o2online.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
o2online.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-21 03:26:20 UTC · ↺ Refresh

MX Hostnames

  • mx2c52.megamailservers.eu
  • mx.o2online.de
  • mx4c52.megamailservers.eu
  • mx3c52.megamailservers.eu

MX Priorities

  • mx2c52.megamailservers.eu: 100
  • mx3c52.megamailservers.eu: 110
  • mx4c52.megamailservers.eu: 120
  • mx.o2online.de: 10

A / AAAA Records

  • 141.101.90.38 (no PTR)
  • 141.101.90.39 (no PTR)
  • 2a06:98c1:3200::120:0:501 (no PTR)
  • 2a06:98c1:3200::120:0:500 (no PTR)

Mail Server IPs

  • 91.136.8.195 ↩ mx2c52.megamailservers.eu
  • 91.136.8.196 ↩ mx3c52.megamailservers.eu
  • 91.136.8.197 ↩ mx4c52.megamailservers.eu
  • 91.136.8.194 ↩ mx1c52.megamailservers.eu

SOA Record

Raw SOA ns1.o2online.de domain-de.o2.com 2026032001 10800 3600 604800 600
Primary NS (mname)
ns1.o2online.de
Admin Email (rname)
domain-de@o2.com
Serial
2026032001
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns3.o2online.de
ns2.o2online.de
ns1.o2online.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:82.113.101.0/24 ip4:212.23.125.184 ip4:46.28.184.125 include:spf.mail.telefonica.de include:spfc50.megamailservers.eu include:spf.mailjet.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

9 records
  • google-site-verification=FwT3kAVc80VnzKG5neMQDZQBnAAzXqUQ1JFqgkQUk9c
  • trustpilot-one-time-verification-id=d7d7e916-a052-417e-99f2-62715f9e892a
  • facebook-domain-verification=w9pmyg2ovroz7fvkbajxsxujzd1j6k
  • wbjqxm9pt6krs013g6k3h6v6xwn6x3tz
  • google-site-verification=ilvQrILe7LToYDt98i1gjYtEVjrTSGEiJfR3BV57vew
  • google-site-verification: ub0a6_20S3EL-pUtqn2PIRG0MOA1TWO4SQijgY0nIAQ
  • _ndmcvxtiy3e4khz4kjr31phy9ii0r64
  • google-site-verification=7ZDGs63vaE7yemWciLcyS6TXixCaWiRv_PxkTr1Bok0
  • SPFv=spf1 ip4:82.113.101.0/24 ip4:212.23.125.184 ip4:46.28.184.125 include:spf.mail.telefonica.de include:spfc50.megamailservers.eu include:spf.mailjet.com -all
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