rtfl.se - dns.ninja

`rtfl.se`

DNSSEC	🔒 Signed (DS record present)
A	31.216.36.139^{🇸🇪 Cygategroup31.216.32.0/21}
A	198.49.23.144^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
A	198.49.23.145^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
A	198.185.159.144^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
A	198.185.159.145^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
NS	`ns1.loopia.se` ⭐
		A	2a02:250:ffff::20^{🇸🇪 LOOPIA2a02:250:ffff::/48}
			PTR	`ns1.loopia.se`
		A	93.188.0.20^{🇸🇪 LOOPIA93.188.0.0/24 SE-LOOPIA Loopia AB}
			PTR	`ns1.loopia.se`
NS	`ns2.loopia.se`
		A	2a02:250:fffe::20^{🇸🇪 LOOPIA22a02:250:fffe::/48}
			PTR	`ns2.loopia.se`
		A	185.71.156.20^{🇸🇪 LOOPIA2185.71.156.0/24}
			PTR	`ns2.loopia.se`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c09::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bh-in-f26.1e100.net`
		A	192.178.155.27^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
		A	2800:3f0:4003:c14::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f26.1e100.net`
MX	`aspmx3.googlemail.com`⁽¹⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
TXT	`v=spf1 mx a include:spf.itmastaren.net include:_spf.google.com ~all`
TXT	`mandrill_verify.TWou8PqNZCNIf3l_E-qivQ`
TXT	`google-site-verification=kw77EV1KMRIOP_tWuxhjDduuGWxEY8CxlWPXso8at1I`
TXT	`google-site-verification=HOPmZpVNYuuRsmd_6Pd9wfFmFO7CfmwS8LYQcOFn0VA`
SOA	`ns1.loopia.se`registry@loopia.se serial=1785974400

`se`

	DNSSEC	🔒 Signed (DS record present)
	NS	`catcher-in-the-rye.nic.se` ⭐
	NS	`a.ns.se`
	NS	`b.ns.se`
	NS	`c.ns.se`
	NS	`f.ns.se`
	NS	`g.ns.se`
	NS	`i.ns.se`
	NS	`m.ns.se`
	NS	`x.ns.se`
	NS	`y.ns.se`
	NS	`z.ns.se`
	TXT	`id:3dfd13b4-cf1c-4a63-bbf5-9b96fe5b2890`
	TXT	`SE zone update: 2026-08-09 21:17:13 +0000 (EPOCH 1786310233) (auto)`
	SOA	`catcher-in-the-rye.nic.se`registry-default@nic.se serial=1786310576

Same first word

rtfl.com.cn

rtfl.net

rtfl.com

rtfl.se

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DNS History

23 records (14 active, 9 former)

○NSns01.one.com2015-06-16 → 2016-03-26 · 4 obs

● 2015-06-16 07:53:28
● 2016-03-26 09:28:32
○ 2016-07-15 05:16:02
○ 2026-08-09 22:11:56

○NSns02.one.com2015-06-16 → 2016-03-26 · 4 obs

● 2015-06-16 07:53:28
● 2016-03-26 09:28:32
○ 2016-07-15 05:16:02
○ 2026-08-09 22:11:56

●NSns1.loopia.se2016-07-15 → 2026-08-09 · 3 obs

○ 2016-03-26 09:28:32
● 2016-07-15 05:16:02
● 2026-08-09 22:11:56

●NSns2.loopia.se2016-07-15 → 2026-08-09 · 3 obs

○ 2016-03-26 09:28:32
● 2016-07-15 05:16:02
● 2026-08-09 22:11:56

●MXalt1.aspmx.l.google.com2016-11-23 → 2026-08-09 · 3 obs

○ 2016-07-15 05:16:02
● 2016-11-23 10:18:28
● 2026-08-09 22:11:56

●MXalt2.aspmx.l.google.com2016-11-23 → 2026-08-09 · 3 obs

○ 2016-07-15 05:16:02
● 2016-11-23 10:18:28
● 2026-08-09 22:11:56

●MXalt3.aspmx.l.google.com2026-02-27 → 2026-08-09 · 3 obs

○ 2016-11-30 08:20:38
● 2026-02-27 05:41:10
● 2026-08-09 22:11:56

●MXalt4.aspmx.l.google.com2026-02-27 → 2026-08-09 · 3 obs

○ 2016-11-30 08:20:38
● 2026-02-27 05:41:10
● 2026-08-09 22:11:56

●MXaspmx.l.google.com2016-11-23 → 2026-08-09 · 3 obs

○ 2016-07-15 05:16:02
● 2016-11-23 10:18:28
● 2026-08-09 22:11:56

●MXaspmx2.googlemail.com2016-11-23 → 2026-08-09 · 3 obs

○ 2016-07-15 05:16:02
● 2016-11-23 10:18:28
● 2026-08-09 22:11:56

●MXaspmx3.googlemail.com2016-11-23 → 2026-08-09 · 3 obs

○ 2016-07-15 05:16:02
● 2016-11-23 10:18:28
● 2026-08-09 22:11:56

○MXgw1.security.comendo.com2015-06-16 → 2016-03-26 · 4 obs

● 2015-06-16 07:53:28
● 2016-03-26 09:28:32
○ 2016-07-15 05:16:02
○ 2026-08-09 22:11:56

○MXgw2.security.comendo.com2015-06-16 → 2016-03-26 · 4 obs

● 2015-06-16 07:53:28
● 2016-03-26 09:28:32
○ 2016-07-15 05:16:02
○ 2026-08-09 22:11:56

○MXgw3.security.comendo.com2015-06-16 → 2016-03-26 · 4 obs

● 2015-06-16 07:53:28
● 2016-03-26 09:28:32
○ 2016-07-15 05:16:02
○ 2026-08-09 22:11:56

○MXrtfl-se.mx1.comendosystems.com2016-07-15 → 2016-11-30 · 5 obs

○ 2016-03-26 09:28:32
● 2016-07-15 05:16:02
● 2016-11-30 08:20:38
○ 2026-02-27 05:41:10
○ 2026-08-09 22:11:56

○MXrtfl-se.mx2.comendosystems.net2016-07-15 → 2016-11-30 · 5 obs

○ 2016-03-26 09:28:32
● 2016-07-15 05:16:02
● 2016-11-30 08:20:38
○ 2026-02-27 05:41:10
○ 2026-08-09 22:11:56

●A198.185.159.1442026-02-27 → 2026-08-09 · 3 obs

○ 2016-11-30 08:20:38
● 2026-02-27 05:41:10
● 2026-08-09 22:11:56

●A198.185.159.1452026-02-27 → 2026-08-09 · 3 obs

○ 2016-11-30 08:20:38
● 2026-02-27 05:41:10
● 2026-08-09 22:11:56

●A198.49.23.1442026-02-27 → 2026-08-09 · 3 obs

○ 2016-11-30 08:20:38
● 2026-02-27 05:41:10
● 2026-08-09 22:11:56

●A198.49.23.1452026-02-27 → 2026-08-09 · 3 obs

○ 2016-11-30 08:20:38
● 2026-02-27 05:41:10
● 2026-08-09 22:11:56

●A31.216.36.1392026-02-27 → 2026-08-09 · 3 obs

○ 2016-11-30 08:20:38
● 2026-02-27 05:41:10
● 2026-08-09 22:11:56

○A46.30.212.942015-06-16 → 2016-07-15 · 4 obs

● 2015-06-16 07:53:28
● 2016-07-15 05:16:02
○ 2016-11-23 10:18:28
○ 2026-08-09 22:11:56

○A46.30.215.172016-11-23 → 2016-11-30 · 5 obs

○ 2016-07-15 05:16:02
● 2016-11-23 10:18:28
● 2016-11-30 08:20:38
○ 2026-02-27 05:41:10
○ 2026-08-09 22:11:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
se	a.ns.se, b.ns.se, c.ns.se, f.ns.se...	-
rtfl.se	ns2.loopia.se, ns1.loopia.se	4 records

✅ Authoritative Response

Server:93.188.0.20

NS records: ns2.loopia.se, ns1.loopia.se

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1735ms | Queries: -

📄 Records

Type	Count	Sample Data
A	5	`198.49.23.144, 198.185.159.144...`
NS	2	`ns2.loopia.se, ns1.loopia.se`
MX	7	`alt4.aspmx.l.google.com (pri: 10), ALT2.aspmx.l.google.com (pri: 5)...`
TXT	4	`v=spf1 mx a include:spf.itmastaren.net i, mandrill_verify.TWou8PqNZCNIf3l_E-qivQ...`
SOA	1	`ns1.loopia.se registry.loopia.se`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns2.loopia.se, ns1.loopia.se, ns2.loopia.se...)

Analysis

IP Addresses

rtfl.se has five IP addresses, specifically 31.216.36.139, 198.49.23.144, 198.49.23.145 and two more

Among the host names that share IP numbers with rtfl.se are belliscollection.com, cancerdriver.com, educationresourcehub.com and two others.

Name Servers

Two name servers handle the delegation for rtfl.se: ns1.loopia.se and ns2.loopia.se.

rtfl.se has the same name server delegation as a number of other domains, such as jardmark.se, acount.co, mobilx.se and two more.

rtfl.se shares at least some of its name servers with other domains, for example edge-concept.net, ippalinteractive.com, idband.se and elomraden.se.

These name servers tend to be deployed in combination with the name servers ns3.loopia.se and ns4.loopia.se.

ns1.loopia.se and ns2.loopia.se both carry two IP addresses. The A records for ns1.loopia.se are 93.188.0.20 and 2a02:250:ffff::20; the A records for ns2.loopia.se are 185.71.156.20 and 2a02:250:fffe::20.

Mail Servers

rtfl.se uses 7 mail servers for delivery: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and 4 other.

rtfl.se shares at least some of its mail servers with other domains — for example ns500758.ns500758.ns500759.ns500698.ns500698.ns500698.ns500735.ns500698.ns500735.ns500736.ns500576.ns500708.ns500619.ns500576.trackreceptor.com, pbfclick.co.uk, studiofivedesign.com and two more.

It is common to find these mail servers paired with mail servers alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 more.

Hosts with two IP numbers each:

aspmx2.googlemail.com resolves to two addresses: 192.178.234.26 and 2800:3f0:4003:c14::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:c09::1a.

alt1.aspmx.l.google.com resolves to two addresses: 192.178.234.26 and 2800:3f0:4003:c14::1b.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com resolves to two addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com resolves to two addresses: 172.253.157.27 and 2a00:1450:400c:c23::1b.

aspmx2.googlemail.com along with alt1.aspmx.l.google.com each resolve to 2800:3f0:4003:c14::1b IP addresses.

aspmx2.googlemail.com along with alt1.aspmx.l.google.com each resolve to 192.178.234.26 IP addresses.

aspmx3.googlemail.com along with alt2.aspmx.l.google.com each resolve to 172.253.116.26 IP addresses.