rtfgroup.com - dns.ninja
rtfgroup.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1783208916 | ||||||
Subdomains
mail.rtfgroup.com |
Same first word
rtfgroup.com |
Similar names
DNS History
9 records (8 active, 1 former)
●NSns87.worldnic.com2015-06-21 → 2026-07-05 · 2 obs
● 2026-07-05 00:13:34
●NSns88.worldnic.com2015-06-21 → 2026-07-05 · 2 obs
● 2026-07-05 00:13:34
●MXalt1.aspmx.l.google.com2015-06-21 → 2026-07-05 · 2 obs
● 2026-07-05 00:13:34
●MXalt2.aspmx.l.google.com2015-06-21 → 2026-07-05 · 2 obs
● 2026-07-05 00:13:34
●MXaspmx.l.google.com2015-06-21 → 2026-07-05 · 2 obs
● 2026-07-05 00:13:34
●MXaspmx2.googlemail.com2015-06-21 → 2026-07-05 · 2 obs
● 2026-07-05 00:13:34
●MXaspmx3.googlemail.com2015-06-21 → 2026-07-05 · 2 obs
● 2026-07-05 00:13:34
○A209.17.116.82015-06-21 → 2016-05-07 · 4 obs
● 2016-05-07 13:13:54
○ 2017-03-28 13:02:00
○ 2026-07-05 00:13:34
●A23.236.62.1472017-03-28 → 2026-07-05 · 3 obs
● 2017-03-28 13:02:00
● 2026-07-05 00:13:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, m.gtld-servers.net, k.gtld-servers.net, f.gtld-servers.net... | - |
| rtfgroup.com | ns87.worldnic.com, ns88.worldnic.com | 2 records |
✅ Authoritative Response
Server:162.159.27.117
NS records: ns87.worldnic.com, ns88.worldnic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rtfgroup.com (unsigned zone)
⏱️ Timing
Total: 247ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 23.236.62.147 |
| NS | 2 | ns88.worldnic.com, ns87.worldnic.com |
| MX | 5 | alt1.aspmx.l.google.com (pri: 5), alt2.aspmx.l.google.com (pri: 5)... |
| TXT | 1 | v=spf1 ip4:205.178.152.18 include:_spf.g |
| SOA | 1 | NS87.WORLDNIC.com namehost.WORLDNIC.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns87.worldnic.com, ns88.worldnic.com)
Analysis
Hierarchy
mail.rtfgroup.com is a subdomain of rtfgroup.com.
IP Addresses
rtfgroup.com points to a single IP number: 23.236.62.147.
Additional host names — rossiandrea.it, kulven.com, shermanfarmnh.com and two others — share IP numbers with rtfgroup.com.
Name Servers
Two name servers handle the delegation for rtfgroup.com: ns87.worldnic.com and ns88.worldnic.com.
rtfgroup.com shares its name server setup with other domains, including edu-prize.org, rpgfocus.com, usliinsured.com and two others.
Both ns87.worldnic.com and ns88.worldnic.com have a single IP address each — ns87.worldnic.com resolves to 162.159.26.131 while ns88.worldnic.com resolves to 162.159.27.117.
Mail Servers
Five mail servers handle rtfgroup.com: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.
rtfgroup.com shares mail servers — at least in part — with other domains, including ns500754.ns500671.ns500754.ns500731.ns500742.ns500704.ns500742.ns500688.ns500688.ns500671.ns500291.ns500678.ns500649.ns500291.ns500153.tenderladiesbz.com, anglicanwestmalaysia.org.my, woolworths.co.nz and two others.
These mail servers are frequently used alongside mail servers alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 other.
Host names with two IP numbers:
aspmx2.googlemail.com resolves to two addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1b.
aspmx3.googlemail.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1a.
aspmx.l.google.com resolves to two addresses: 192.178.155.27 and 2607:f8b0:4004:c21::1a.
alt1.aspmx.l.google.com resolves to two addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1b.
alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.27 and 2a00:1450:400b:c02::1b.
aspmx2.googlemail.com along with alt1.aspmx.l.google.com each resolve to 2800:3f0:4003:c0f::1b IP addresses.
aspmx2.googlemail.com along with alt1.aspmx.l.google.com each resolve to 108.177.123.27 IP addresses.