`backoffice.rufruf.cz`

DNSSEC	⚠️ Not signed
A	3.166.160.52^{🇺🇸 Amazon3.166.160.0/21}
		PTR	`server-3-166-160-52.mia50.r.cloudfront.net`
A	3.166.160.85^{🇺🇸 Amazon3.166.160.0/21}
A	3.166.160.95^{🇺🇸 Amazon3.166.160.0/21}
A	3.166.160.122^{🇺🇸 Amazon3.166.160.0/21}

`rufruf.cz`

	DNSSEC	⚠️ Not signed
	A	3.67.236.190^{🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix}
	A	3.68.26.114^{🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix}
	A	3.70.86.7^{🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix}
	NS	`ns-578.awsdns-08.net` ⭐
	NS	`ns-1380.awsdns-44.org`
	NS	`ns-1646.awsdns-13.co.uk`
	NS	`ns-243.awsdns-30.com`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`aspmx2.googlemail.com`⁽¹⁰⁾
	MX	`aspmx3.googlemail.com`⁽¹⁰⁾
	TXT	`MS=7AC566F99E528B7C348D7ABDF164489EA1797DCC`
	TXT	`apple-domain-verification=0JS0vHC5cXeuzJ0n`
	TXT	`facebook-domain-verification=cja0mf299do3cbtyhku5abusy7oncv`
	TXT	`google-site-verification=DTusK04p-Ae7LmjUe0nwHM4mWXWjpUd0m_aVaGVvokA`
	TXT	`google-site-verification=ehCDwxTTa9BeTNerUkffAemHx1WtBOPn4PeYyTjmycs`
	TXT	`v=spf1 include:_spf.google.com include:_emailing.heureka.cz ~all`
	SOA	`ns-578.awsdns-08.net`awsdns-hostmaster@amazon.com serial=1

Same first word

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backoffice.pt

backoffice.clinic

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backoffice.awsapps.com

backoffice.kinghost.net

backoffice.biz

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backoffice.army

backoffice.com.pe

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backoffice.no

backoffice.im

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backoffice.se

backoffice.koeln

backoffice.kz

DNS History

32 records (4 active, 28 former)

○A143.204.194.1202026-02-28 → 2026-02-28 · 4 obs

○ 2026-02-28 21:28:04
● 2026-02-28 23:15:16
○ 2026-03-02 14:22:30
○ 2026-04-11 20:33:28

○A143.204.194.42026-02-28 → 2026-02-28 · 4 obs

○ 2026-02-28 21:28:04
● 2026-02-28 23:15:16
○ 2026-03-02 14:22:30
○ 2026-04-11 20:33:28

○A143.204.194.842026-02-28 → 2026-02-28 · 4 obs

○ 2026-02-28 21:28:04
● 2026-02-28 23:15:16
○ 2026-03-02 14:22:30
○ 2026-04-11 20:33:28

○A143.204.194.882026-02-28 → 2026-02-28 · 4 obs

○ 2026-02-28 21:28:04
● 2026-02-28 23:15:16
○ 2026-03-02 14:22:30
○ 2026-04-11 20:33:28

○A18.239.168.1212026-03-09 → 2026-03-09 · 4 obs

○ 2026-03-08 23:25:22
● 2026-03-09 00:13:42
○ 2026-03-09 11:31:22
○ 2026-04-11 20:33:28

○A18.239.168.192026-03-09 → 2026-03-09 · 4 obs

○ 2026-03-08 23:25:22
● 2026-03-09 00:13:42
○ 2026-03-09 11:31:22
○ 2026-04-11 20:33:28

○A18.239.168.722026-03-09 → 2026-03-09 · 4 obs

○ 2026-03-08 23:25:22
● 2026-03-09 00:13:42
○ 2026-03-09 11:31:22
○ 2026-04-11 20:33:28

○A18.239.168.812026-03-09 → 2026-03-09 · 4 obs

○ 2026-03-08 23:25:22
● 2026-03-09 00:13:42
○ 2026-03-09 11:31:22
○ 2026-04-11 20:33:28

○A18.245.162.1262026-02-16 → 2026-04-08 · 68 obs

● 2026-02-16 22:07:54
● 2026-02-19 01:43:08
○ 2026-02-21 06:07:48
○ 2026-02-24 13:31:22
● 2026-02-24 17:28:58
○ 2026-02-25 05:22:56
● 2026-02-25 23:10:54
○ 2026-02-27 19:36:16
● 2026-02-28 17:33:38
○ 2026-02-28 21:28:04
○ 2026-03-02 14:22:30
● 2026-03-02 23:25:20
● 2026-03-04 23:25:14
○ 2026-03-06 16:05:12
● 2026-03-06 23:16:28
○ 2026-03-07 01:11:04
○ 2026-03-07 09:24:46
● 2026-03-07 10:26:52
○ 2026-03-07 16:23:40
○ 2026-03-07 22:35:36
● 2026-03-08 23:25:22
○ 2026-03-09 00:13:42
● 2026-03-09 11:31:22
● 2026-03-09 19:18:50
○ 2026-03-10 00:14:36
● 2026-03-10 03:07:00
● 2026-03-11 12:34:32
○ 2026-03-12 00:15:30
● 2026-03-12 07:21:46
○ 2026-03-12 10:18:12
● 2026-03-12 15:00:20
○ 2026-03-14 11:43:24
● 2026-03-14 14:36:54
○ 2026-03-14 17:30:12
○ 2026-03-14 18:30:22
● 2026-03-14 21:22:52
● 2026-03-15 21:38:28
○ 2026-03-16 04:40:58
● 2026-03-16 09:08:22
● 2026-03-17 23:40:02
○ 2026-03-18 22:02:18
● 2026-03-18 23:47:08
○ 2026-03-19 15:10:50
● 2026-03-19 20:54:52
○ 2026-03-21 00:15:12
○ 2026-03-21 12:54:34
● 2026-03-21 23:13:24
● 2026-03-23 01:43:34
○ 2026-03-23 02:20:20
○ 2026-03-23 07:51:32
● 2026-03-24 04:07:48
● 2026-03-24 09:15:42
○ 2026-03-26 05:03:24
○ 2026-03-27 09:35:06
● 2026-03-27 20:12:16
● 2026-03-30 13:47:30
○ 2026-03-30 14:49:12
● 2026-03-30 16:45:30
○ 2026-03-31 11:01:48
● 2026-03-31 19:19:22
● 2026-04-05 01:48:10
○ 2026-04-05 23:10:36
● 2026-04-06 11:56:52
○ 2026-04-07 14:23:14
● 2026-04-07 17:01:00
● 2026-04-08 14:36:18
○ 2026-04-10 21:04:08
○ 2026-04-11 20:33:28

○A18.245.162.282026-02-16 → 2026-04-08 · 68 obs

○A18.245.162.702026-02-16 → 2026-04-08 · 68 obs

○A18.245.162.962026-02-16 → 2026-04-08 · 68 obs

●A3.166.160.1222026-03-31 → 2026-04-11 · 6 obs

○ 2026-03-30 16:45:30
● 2026-03-31 11:01:48
○ 2026-03-31 19:19:22
○ 2026-04-11 09:58:20
● 2026-04-11 20:33:26
● 2026-04-11 20:33:28

●A3.166.160.522026-03-31 → 2026-04-11 · 6 obs

○ 2026-03-30 16:45:30
● 2026-03-31 11:01:48
○ 2026-03-31 19:19:22
○ 2026-04-11 09:58:20
● 2026-04-11 20:33:26
● 2026-04-11 20:33:28

●A3.166.160.852026-03-31 → 2026-04-11 · 6 obs

○ 2026-03-30 16:45:30
● 2026-03-31 11:01:48
○ 2026-03-31 19:19:22
○ 2026-04-11 09:58:20
● 2026-04-11 20:33:26
● 2026-04-11 20:33:28

●A3.166.160.952026-03-31 → 2026-04-11 · 6 obs

○ 2026-03-30 16:45:30
● 2026-03-31 11:01:48
○ 2026-03-31 19:19:22
○ 2026-04-11 09:58:20
● 2026-04-11 20:33:26
● 2026-04-11 20:33:28

○A3.171.85.1012026-02-21 → 2026-04-07 · 47 obs

○ 2026-02-21 12:42:50
● 2026-02-21 14:04:48
● 2026-02-24 13:31:22
○ 2026-02-24 17:28:58
○ 2026-02-25 23:10:54
● 2026-02-27 19:36:16
○ 2026-02-28 17:33:38
○ 2026-02-28 23:15:16
● 2026-03-02 14:22:30
○ 2026-03-02 23:25:20
○ 2026-03-06 23:16:28
● 2026-03-07 01:11:04
● 2026-03-07 09:24:46
○ 2026-03-07 10:26:52
○ 2026-03-09 19:18:50
● 2026-03-10 00:14:36
○ 2026-03-10 03:07:00
○ 2026-03-11 12:34:32
● 2026-03-12 00:15:30
○ 2026-03-12 07:21:46
○ 2026-03-14 14:36:54
● 2026-03-14 17:30:12
○ 2026-03-14 18:30:22
○ 2026-03-15 21:38:28
● 2026-03-16 04:40:58
○ 2026-03-16 09:08:22
○ 2026-03-17 23:40:02
● 2026-03-18 22:02:18
○ 2026-03-18 23:47:08
○ 2026-03-19 20:54:52
● 2026-03-21 00:15:12
○ 2026-03-21 12:54:34
○ 2026-03-23 01:43:34
● 2026-03-23 02:20:20
● 2026-03-23 07:51:32
○ 2026-03-24 04:07:48
○ 2026-03-26 16:52:02
● 2026-03-27 01:14:52
● 2026-03-27 09:35:06
○ 2026-03-27 20:12:16
○ 2026-03-30 13:47:30
● 2026-03-30 14:49:12
○ 2026-03-30 16:45:30
○ 2026-04-06 11:56:52
● 2026-04-07 14:23:14
○ 2026-04-07 17:01:00
○ 2026-04-11 20:33:28

○A3.171.85.1222026-02-21 → 2026-04-07 · 47 obs

○A3.171.85.132026-02-21 → 2026-04-07 · 47 obs

○A3.171.85.912026-02-21 → 2026-04-07 · 47 obs

○A3.174.113.1062026-03-26 → 2026-03-26 · 5 obs

○ 2026-03-24 09:15:42
● 2026-03-26 05:03:24
● 2026-03-26 16:52:02
○ 2026-03-27 01:14:52
○ 2026-04-11 20:33:28

○A3.174.113.112026-03-26 → 2026-03-26 · 5 obs

○ 2026-03-24 09:15:42
● 2026-03-26 05:03:24
● 2026-03-26 16:52:02
○ 2026-03-27 01:14:52
○ 2026-04-11 20:33:28

○A3.174.113.342026-03-26 → 2026-03-26 · 5 obs

○ 2026-03-24 09:15:42
● 2026-03-26 05:03:24
● 2026-03-26 16:52:02
○ 2026-03-27 01:14:52
○ 2026-04-11 20:33:28

○A3.174.113.642026-03-26 → 2026-03-26 · 5 obs

○ 2026-03-24 09:15:42
● 2026-03-26 05:03:24
● 2026-03-26 16:52:02
○ 2026-03-27 01:14:52
○ 2026-04-11 20:33:28

○A52.84.20.1232026-02-21 → 2026-03-21 · 30 obs

○ 2026-02-16 22:07:54
○ 2026-02-19 01:43:08
● 2026-02-21 06:07:48
● 2026-02-21 12:42:50
○ 2026-02-21 14:04:48
○ 2026-02-24 17:28:58
● 2026-02-25 05:22:56
○ 2026-02-25 23:10:54
○ 2026-02-28 17:33:38
● 2026-02-28 21:28:04
○ 2026-02-28 23:15:16
○ 2026-03-04 23:25:14
● 2026-03-06 16:05:12
○ 2026-03-06 23:16:28
○ 2026-03-07 10:26:52
● 2026-03-07 16:23:40
○ 2026-03-07 21:31:36
○ 2026-03-12 07:21:46
● 2026-03-12 10:18:12
○ 2026-03-12 15:00:20
○ 2026-03-14 17:30:12
● 2026-03-14 18:30:22
○ 2026-03-14 21:22:52
○ 2026-03-18 23:47:08
● 2026-03-19 15:10:50
○ 2026-03-19 20:54:52
○ 2026-03-21 00:15:12
● 2026-03-21 12:54:34
○ 2026-03-21 23:13:24
○ 2026-04-11 20:33:28

○A52.84.20.352026-02-21 → 2026-03-21 · 30 obs

○A52.84.20.692026-02-21 → 2026-03-21 · 30 obs

○A52.84.20.832026-02-21 → 2026-03-21 · 30 obs

○A52.85.61.212026-03-07 → 2026-04-11 · 15 obs

○ 2026-03-07 16:23:40
● 2026-03-07 21:31:36
● 2026-03-07 22:35:36
○ 2026-03-08 23:25:22
○ 2026-03-12 15:00:20
● 2026-03-14 11:43:24
○ 2026-03-14 14:36:54
○ 2026-04-05 01:48:10
● 2026-04-05 23:10:36
○ 2026-04-06 11:56:52
○ 2026-04-08 14:36:18
● 2026-04-10 21:04:08
● 2026-04-11 09:58:20
○ 2026-04-11 20:33:26
○ 2026-04-11 20:33:28

○A52.85.61.282026-03-07 → 2026-04-11 · 15 obs

○A52.85.61.62026-03-07 → 2026-04-11 · 15 obs

○A52.85.61.652026-03-07 → 2026-04-11 · 15 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	c.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz	-
rufruf.cz	ns-578.awsdns-08.net, ns-1646.awsdns-13.co.uk, ns-243.awsdns-30.com, ns-1380.awsdns-44.org	-

✅ Authoritative Response

Server:205.251.194.66

NS records: ns-578.awsdns-08.net, ns-1646.awsdns-13.co.uk, ns-243.awsdns-30.com, ns-1380.awsdns-44.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rufruf.cz (unsigned zone)

⏱️ Timing

Total: 636ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.166.160.85, 3.166.160.95...`

Analysis

IP Addresses

backoffice.rufruf.cz points to four IP numbers: 3.166.160.52, 3.166.160.85, 3.166.160.95 and 3.166.160.122.

Other host names, for instance www.bankszamlakivonat.hu, blog.coachai.com, etlms.de, thinslices.com and snaplisted.com share IP numbers with backoffice.rufruf.cz.

backoffice.rufruf.cz - robtex.com