rtk0.net - dns.ninja

`rtk0.net`

DNSSEC	⚠️ Not signed
A	45.79.10.221^{🇺🇸 AKAMAI-LINODE-AP45.79.8.0/22 Akamai Technologies}
		PTR	`overbeck.rtk0.net`
NS	`ns1.linode.com` ⭐
		A	2600:14c0:6::2^{🇺🇸 Akamai2600:14c0:6::/48 Technologies}
			PTR	`c1-2.akashield.net`
		A	92.123.94.2^{🇳🇱 Akamai92.123.94.0/24 Technologies}
			PTR	`c1-2.akashield.net`
NS	`ns2.linode.com`
		A	2600:14c0:6::3^{🇺🇸 Akamai2600:14c0:6::/48 Technologies}
			PTR	`c1-3.akashield.net`
		A	92.123.94.3^{🇳🇱 Akamai92.123.94.0/24 Technologies}
			PTR	`c1-3.akashield.net`
NS	`ns3.linode.com`
		A	2600:14c0:7::3^{🇺🇸 Akamai2600:14c0:7::/48 Technologies}
			PTR	`c2-3.akashield.net`
		A	92.123.95.3^{🇳🇱 Akamai92.123.95.0/24 Technologies}
			PTR	`c2-3.akashield.net`
NS	`ns4.linode.com`
		A	2600:14c0:7::4^{🇺🇸 Akamai2600:14c0:7::/48 Technologies}
			PTR	`c2-4.akashield.net`
		A	92.123.95.4^{🇳🇱 Akamai92.123.95.0/24 Technologies}
			PTR	`c2-4.akashield.net`
NS	`ns5.linode.com`
		A	2600:14c0:7::2^{🇺🇸 Akamai2600:14c0:7::/48 Technologies}
			PTR	`c2-2.akashield.net`
		A	92.123.95.2^{🇳🇱 Akamai92.123.95.0/24 Technologies}
			PTR	`c2-2.akashield.net`
MX	`in1.smtp.messagingengine.com` ⭐
		A	103.168.172.216^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-01.messagingengine.com`
		A	103.168.172.217^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-02.messagingengine.com`
		A	103.168.172.218^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-03.messagingengine.com`
		A	103.168.172.219^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-04.messagingengine.com`
		A	103.168.172.220^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-05.messagingengine.com`
		A	103.168.172.221^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-06.messagingengine.com`
		A	103.168.172.222^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-07.messagingengine.com`
		A	103.168.172.223^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-08.messagingengine.com`
MX	`in2.smtp.messagingengine.com`⁽²⁰⁾
		A	202.12.124.216^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-01.messagingengine.com`
		A	202.12.124.217^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-02.messagingengine.com`
		A	202.12.124.218^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-03.messagingengine.com`
		A	202.12.124.219^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-04.messagingengine.com`
TXT	`v=spf1 a mx a:overbeck.rtk0.net a:underbeck.rtk0.net a:mail.rtk0.net a:mail.f...`
SOA	`ns1.linode.com`zonemaster@bdragon.rtk0.net serial=2021000108

`net`

	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.net`nstld@verisign-grs.com serial=1784139587

Subdomains

overbeck.rtk0.net

underbeck-legacy.rtk0.net

underbeck.rtk0.net

Same first word

rtk0.net

Similar names

r0tk.com

k0rt.nl

kt0r.com

t0rk.com

0trk.com

DNS History

14 records (8 active, 6 former)

●NSns1.linode.com2026-02-15 → 2026-07-15 · 3 obs

○ 2016-12-14 14:58:20
● 2026-02-15 08:40:44
● 2026-07-15 18:48:24

○NSns1.mydyndns.org2015-06-03 → 2016-12-14 · 4 obs

● 2015-06-03 12:56:14
● 2016-12-14 14:58:20
○ 2026-02-15 08:40:44
○ 2026-07-15 18:48:24

○NSns1145.dns.dyn.com2015-06-03 → 2016-12-14 · 4 obs

● 2015-06-03 12:56:14
● 2016-12-14 14:58:20
○ 2026-02-15 08:40:44
○ 2026-07-15 18:48:24

●NSns2.linode.com2026-02-15 → 2026-07-15 · 3 obs

○ 2016-12-14 14:58:20
● 2026-02-15 08:40:44
● 2026-07-15 18:48:24

○NSns2174.dns.dyn.com2015-06-03 → 2016-12-14 · 4 obs

● 2015-06-03 12:56:14
● 2016-12-14 14:58:20
○ 2026-02-15 08:40:44
○ 2026-07-15 18:48:24

●NSns3.linode.com2026-02-15 → 2026-07-15 · 3 obs

○ 2016-12-14 14:58:20
● 2026-02-15 08:40:44
● 2026-07-15 18:48:24

○NSns3152.dns.dyn.com2015-06-03 → 2016-12-14 · 4 obs

● 2015-06-03 12:56:14
● 2016-12-14 14:58:20
○ 2026-02-15 08:40:44
○ 2026-07-15 18:48:24

●NSns4.linode.com2026-02-15 → 2026-07-15 · 3 obs

○ 2016-12-14 14:58:20
● 2026-02-15 08:40:44
● 2026-07-15 18:48:24

○NSns4190.dns.dyn.com2015-06-03 → 2016-12-14 · 4 obs

● 2015-06-03 12:56:14
● 2016-12-14 14:58:20
○ 2026-02-15 08:40:44
○ 2026-07-15 18:48:24

●NSns5.linode.com2026-02-15 → 2026-07-15 · 3 obs

○ 2016-12-14 14:58:20
● 2026-02-15 08:40:44
● 2026-07-15 18:48:24

●MXin1.smtp.messagingengine.com2015-06-03 → 2026-07-15 · 2 obs

● 2015-06-03 12:56:14
● 2026-07-15 18:48:24

●MXin2.smtp.messagingengine.com2015-06-03 → 2026-07-15 · 2 obs

● 2015-06-03 12:56:14
● 2026-07-15 18:48:24

●A45.79.10.2212026-02-15 → 2026-07-15 · 3 obs

○ 2016-12-14 14:58:20
● 2026-02-15 08:40:44
● 2026-07-15 18:48:24

○A70.85.129.2152015-06-03 → 2016-12-14 · 4 obs

● 2015-06-03 12:56:14
● 2016-12-14 14:58:20
○ 2026-02-15 08:40:44
○ 2026-07-15 18:48:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	i.gtld-servers.net, k.gtld-servers.net, h.gtld-servers.net, e.gtld-servers.net...	-
rtk0.net	ns1.linode.com, ns2.linode.com, ns3.linode.com, ns4.linode.com...	-

✅ Authoritative Response

Server:92.123.95.3

NS records: ns1.linode.com, ns2.linode.com, ns3.linode.com, ns4.linode.com, ns5.linode.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rtk0.net (unsigned zone)

⏱️ Timing

Total: 875ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`45.79.10.221`
NS	5	`ns3.linode.com, ns2.linode.com...`
MX	2	`in1.smtp.messagingengine.com (pri: 10), in2.smtp.messagingengine.com (pri: 20)`
TXT	1	`v=spf1 a mx a:overbeck.rtk0.net a:underb`
SOA	1	`ns1.linode.com zonemaster.bdragon.rtk0.n`

Analysis

Hierarchy

overbeck.rtk0.net, underbeck-legacy.rtk0.net and underbeck.rtk0.net are all subdomains of rtk0.net.

IP Addresses

rtk0.net resolves to just one IP address, 45.79.10.221.

bergren.name and overbeck.rtk0.net are among other host names that share IP numbers with rtk0.net.

Name Servers

rtk0.net delegates to five name servers: ns1.linode.com, ns2.linode.com, ns3.linode.com and two others.

The name servers of rtk0.net overlap at least partially with those of other domains — among them bloomingvase.com, apogee.ie, imvbackend.com and two more.

These name servers commonly appear alongside the name servers ns4.linode.com and ns5.linode.com.

Host names that have two IP addresses:

ns1.linode.com points to 92.123.94.2 and 2600:14c0:6::2.

ns2.linode.com points to 92.123.94.3 and 2600:14c0:6::3.

ns3.linode.com points to 92.123.95.3 and 2600:14c0:7::3.

ns4.linode.com points to 92.123.95.4 and 2600:14c0:7::4.

ns5.linode.com points to 92.123.95.2 and 2600:14c0:7::2.

Mail Servers

rtk0.net is served by two mail servers, in1.smtp.messagingengine.com and in2.smtp.messagingengine.com.

Among the domains sharing a mail server setup with rtk0.net are uent.in, howtoworkintravel.com, premier-dns.com and two others.

There is at least a partial MX overlap between rtk0.net and other domains, including martinot.info, stricom.us, nrw.milanovic.biz and two others.

DNS names with 8 IP addresses:

in1.smtp.messagingengine.com resolves to 103.168.172.216, 103.168.172.217, 103.168.172.218 and 5 other IP addresses.

Host names that resolve to four IP numbers:

in2.smtp.messagingengine.com resolves to 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.