rfr4.com - robtex.com

rfr4.com

DNSSEC⚠️ Not signed
A5.78.152.212🇺🇸 HETZNER-CLOUD3-AS5.78.152.0/24
PTRstatic.212.152.78.5.clients.your-server.de
NStutu2.ns1.tutu-caonima.com ⭐ ⚠️ Not in parent delegation
A45.76.172.126🇺🇸 AS-VULTR45.76.168.0/21 Vultr Assigned Prefix
PTR45.76.172.126.vultrusercontent.com
A104.238.141.130🇺🇸 AS-VULTR104.238.140.0/22 Vultr Assigned Prefix
PTR104.238.141.130.vultrusercontent.com
NSniuniu1.ns1.niuniu-dns.com ⚠️ Not in parent delegation
A45.76.172.126🇺🇸 AS-VULTR45.76.168.0/21 Vultr Assigned Prefix
PTR45.76.172.126.vultrusercontent.com
A104.238.141.130🇺🇸 AS-VULTR104.238.140.0/22 Vultr Assigned Prefix
PTR104.238.141.130.vultrusercontent.com
NSniuniu2.ns2.niuniu-dns.com ⚠️ Not in parent delegation
A45.76.172.126🇺🇸 AS-VULTR45.76.168.0/21 Vultr Assigned Prefix
PTR45.76.172.126.vultrusercontent.com
A104.238.141.130🇺🇸 AS-VULTR104.238.140.0/22 Vultr Assigned Prefix
PTR104.238.141.130.vultrusercontent.com
NSns1.niuniu-dns.com ⚠️ Not in zone NS records
A39.104.142.55🇨🇳 Alibaba-Cloud39.104.0.0/15 CT BeiJing IDC
A45.76.63.24🇺🇸 AS-VULTR45.76.60.0/22 Vultr Assigned Prefix
PTR45.76.63.24.vultrusercontent.com
A208.109.233.240🇺🇸 AS398101208.109.232.0/22
PTR240.233.109.208.host.secureserver.net
NSns1.smartdns.sbs ⚠️ Not in parent delegation
A45.76.172.126🇺🇸 AS-VULTR45.76.168.0/21 Vultr Assigned Prefix
PTR45.76.172.126.vultrusercontent.com
A104.238.141.130🇺🇸 AS-VULTR104.238.140.0/22 Vultr Assigned Prefix
PTR104.238.141.130.vultrusercontent.com
NSns2.niuniu-dns.com ⚠️ Not in zone NS records
A39.104.142.55🇨🇳 Alibaba-Cloud39.104.0.0/15 CT BeiJing IDC
A45.76.63.24🇺🇸 AS-VULTR45.76.60.0/22 Vultr Assigned Prefix
PTR45.76.63.24.vultrusercontent.com
A208.109.233.240🇺🇸 AS398101208.109.232.0/22
PTR240.233.109.208.host.secureserver.net
NSns2.smartdns.sbs ⚠️ Not in parent delegation
A45.76.172.126🇺🇸 AS-VULTR45.76.168.0/21 Vultr Assigned Prefix
PTR45.76.172.126.vultrusercontent.com
A104.238.141.130🇺🇸 AS-VULTR104.238.140.0/22 Vultr Assigned Prefix
PTR104.238.141.130.vultrusercontent.com
NStutu1.ns2.tutu-caonima.com ⚠️ Not in parent delegation
A45.76.172.126🇺🇸 AS-VULTR45.76.168.0/21 Vultr Assigned Prefix
PTR45.76.172.126.vultrusercontent.com
A104.238.141.130🇺🇸 AS-VULTR104.238.140.0/22 Vultr Assigned Prefix
PTR104.238.141.130.vultrusercontent.com
SOAtutu2.ns1.tutu-caonima.comhostmaster@rfr4.com 2026-05-14 #3

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1778815561

Same first word

rfr4.com

Similar names

frr4.com
fr4r.com

DNS History

15 records (9 active, 6 former)

20162017201820192020202120222023202420252026NSniuniu1.ns1.niuniu-dns.comniuniu2.ns2.niuniu-dns.comns1.niuniu-dns.comns1.smartdns.sbsns2.niuniu-dns.comns2.smartdns.sbstutu1.ns2.tutu-caonima.comtutu2.ns1.tutu-caonima.comns41.domaincontrol.comns42.domaincontrol.comMXmailstore1.secureserver.netsmtp.secureserver.netA5.78.152.21250.63.202.81CNAMEddd42.4xxtt.com
●NSniuniu1.ns1.niuniu-dns.com2026-05-15 → 2026-05-15 · 2 obs
○ 2017-02-18 21:57:54
● 2026-05-15 03:29:38
●NSniuniu2.ns2.niuniu-dns.com2026-05-15 → 2026-05-15 · 2 obs
○ 2017-02-18 21:57:54
● 2026-05-15 03:29:38
●NSns1.niuniu-dns.com2026-05-15 → 2026-05-15 · 2 obs
○ 2017-02-18 21:57:54
● 2026-05-15 03:29:38
●NSns1.smartdns.sbs2026-05-15 → 2026-05-15 · 2 obs
○ 2017-02-18 21:57:54
● 2026-05-15 03:29:38
●NSns2.niuniu-dns.com2026-05-15 → 2026-05-15 · 2 obs
○ 2017-02-18 21:57:54
● 2026-05-15 03:29:38
●NSns2.smartdns.sbs2026-05-15 → 2026-05-15 · 2 obs
○ 2017-02-18 21:57:54
● 2026-05-15 03:29:38
○NSns41.domaincontrol.com2015-06-07 → 2016-05-06 · 4 obs
● 2015-06-07 13:50:10
● 2016-05-06 12:20:12
○ 2017-02-18 21:57:54
○ 2026-05-15 03:29:38
○NSns42.domaincontrol.com2015-06-07 → 2016-05-06 · 4 obs
● 2015-06-07 13:50:10
● 2016-05-06 12:20:12
○ 2017-02-18 21:57:54
○ 2026-05-15 03:29:38
●NStutu1.ns2.tutu-caonima.com2026-05-15 → 2026-05-15 · 2 obs
○ 2017-02-18 21:57:54
● 2026-05-15 03:29:38
●NStutu2.ns1.tutu-caonima.com2026-05-15 → 2026-05-15 · 2 obs
○ 2017-02-18 21:57:54
● 2026-05-15 03:29:38
○MXmailstore1.secureserver.net2015-06-07 → 2016-05-06 · 4 obs
● 2015-06-07 13:50:10
● 2016-05-06 12:20:12
○ 2017-02-18 21:57:54
○ 2026-05-15 03:29:38
○MXsmtp.secureserver.net2015-06-07 → 2016-05-06 · 4 obs
● 2015-06-07 13:50:10
● 2016-05-06 12:20:12
○ 2017-02-18 21:57:54
○ 2026-05-15 03:29:38
●A5.78.152.2122026-05-15 → 2026-05-15 · 2 obs
○ 2017-02-18 21:57:54
● 2026-05-15 03:29:38
○A50.63.202.812015-06-07 → 2016-05-06 · 4 obs
● 2015-06-07 13:50:10
● 2016-05-06 12:20:12
○ 2017-02-18 21:57:54
○ 2026-05-15 03:29:38
○CNAMEddd42.4xxtt.com2026-05-15 → 2026-05-15 · 1 obs
○ 2026-05-15 03:29:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
rfr4.comns1.niuniu-dns.com, ns2.niuniu-dns.com2 records

✅ Authoritative Response

Server:104.238.141.130

NS records: ns1.niuniu-dns.com, ns2.niuniu-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rfr4.com (unsigned zone)

⏱️ Timing

Total: 401ms | Queries: -

📄 Records

TypeCountSample Data
A15.78.152.212
NS6ns1.smartdns.sbs, tutu1.ns2.tutu-caonima.com...
SOA1tutu2.ns1.tutu-caonima.com hostmaster.rf

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.niuniu-dns.com, ns2.niuniu-dns.com)

Analysis

IP Addresses

rfr4.com points to a single IP address: 5.78.152.212.

Other host names such as 89xa.com, 36zhu.com, rh61.com, 36tei.com and 36tie.com share IPs with rfr4.com.

Name Servers

rfr4.com is delegated to eight name servers: ns1.niuniu-dns.com, ns2.niuniu-dns.com, ns1.smartdns.sbs, ns2.smartdns.sbs, niuniu1.ns1.niuniu-dns.com, niuniu2.ns2.niuniu-dns.com, tutu2.ns1.tutu-caonima.com and tutu1.ns2.tutu-caonima.com.

rfr4.com at least partially shares name servers with other domains, for example 922kxw.com, 331hp.com, 22ddss.com, 98san.com and 29kui.com.

Host names with three IP numbers:

ns1.niuniu-dns.com points to: 39.104.142.55, 45.76.63.24 and 208.109.233.240

ns2.niuniu-dns.com points to: 39.104.142.55, 45.76.63.24 and 208.109.233.240

Host names with two IP numbers:

ns1.smartdns.sbs points to: 45.76.172.126 and 104.238.141.130

ns2.smartdns.sbs points to: 45.76.172.126 and 104.238.141.130

niuniu1.ns1.niuniu-dns.com points to: 45.76.172.126 and 104.238.141.130

niuniu2.ns2.niuniu-dns.com points to: 45.76.172.126 and 104.238.141.130

tutu2.ns1.tutu-caonima.com points to: 45.76.172.126 and 104.238.141.130

tutu1.ns2.tutu-caonima.com points to: 45.76.172.126 and 104.238.141.130

Host names that point to 39.104.142.55: ns1.niuniu-dns.com and ns2.niuniu-dns.com

Host names that point to 45.76.63.24: ns1.niuniu-dns.com and ns2.niuniu-dns.com

Host names that point to 208.109.233.240: ns1.niuniu-dns.com and ns2.niuniu-dns.com

Host names that point to 45.76.172.126: ns1.smartdns.sbs, ns2.smartdns.sbs, niuniu1.ns1.niuniu-dns.com, niuniu2.ns2.niuniu-dns.com, tutu2.ns1.tutu-caonima.com and tutu1.ns2.tutu-caonima.com

Host names that point to 104.238.141.130: ns1.smartdns.sbs, ns2.smartdns.sbs, niuniu1.ns1.niuniu-dns.com, niuniu2.ns2.niuniu-dns.com, tutu2.ns1.tutu-caonima.com and tutu1.ns2.tutu-caonima.com