121.rootserver.co - robtex.com
121.rootserver.co
rootserver.co
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.168.172.37🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| A | 103.168.172.52🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| NS | ns1.messagingengine.com ⭐ | ||||||
| NS | ns2.messagingengine.com | ||||||
| MX | in1-smtp.messagingengine.com ⭐ | ||||||
| MX | in2-smtp.messagingengine.com(20) | ||||||
| TXT | v=spf1 include:spf.messagingengine.com ?all | ||||||
| SOA | ns1.messagingengine.compostmaster@messagingengine.com 2026-04-03 #0 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●MXin1-smtp.messagingengine.com2026-03-08 → 2026-04-12 · 2 obs
● 2026-04-12 17:30:58
●MXin2-smtp.messagingengine.com2026-03-08 → 2026-04-12 · 2 obs
● 2026-04-12 17:30:58
●A103.168.172.372026-03-08 → 2026-04-12 · 2 obs
● 2026-04-12 17:30:58
●A103.168.172.522026-03-08 → 2026-04-12 · 2 obs
● 2026-04-12 17:30:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| co | a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co | - |
| rootserver.co | ns1.messagingengine.com, ns2.messagingengine.com | - |
✅ Authoritative Response
Server:162.159.25.191
NS records: ns1.messagingengine.com, ns2.messagingengine.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rootserver.co (unsigned zone)
⏱️ Timing
Total: 484ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 103.168.172.37, 103.168.172.52 |
| MX | 2 | in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20) |
Analysis
IP Addresses
121.rootserver.co points to two IP numbers: 103.168.172.37 and 103.168.172.52.
Other host names such as fivec.biz, billz.fastmail.fm, snieck.us, thewholeenchiladallc.com and www.bellridgekennels.com share IP numbers with 121.rootserver.co.
Mail Servers
121.rootserver.co is handled by two mail servers: in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.
121.rootserver.co uses the same mail server setup as other domains, for instance lelos.info, rlazazzera.com, mail.pacmeta.com, samcleathero.co.uk and st94.com.
Eight IP numbers for host names:
in1-smtp.messagingengine.com points to 103.168.172.216, 103.168.172.217, 103.168.172.218, 103.168.172.219, 103.168.172.220, 103.168.172.221, 103.168.172.222 and 103.168.172.223.
Four IP numbers for host names:
in2-smtp.messagingengine.com points to 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.