crefus.com - robtex.com

crefus.com

DNSSEC⚠️ Not signed
A202.254.238.5🇯🇵 XSERVER-AS
PTRsv4.xbiz.ne.jp
NSns1.xbiz.ne.jp ⭐
A157.112.182.247🇯🇵 XSERVER-AS
PTRns1.xbiz.ne.jp
NSns2.xbiz.ne.jp
A35.76.79.244🇯🇵 Amazon
PTRns2.xbiz.ne.jp
NSns3.xbiz.ne.jp
A157.112.191.237🇯🇵 XSERVER-AS
PTRns3.xbiz.ne.jp
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c19::1b🇺🇸 Google
PTRbk-in-f27.1e100.net
A172.253.62.27🇺🇸 Google
PTRbc-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4003:c30::1b🇺🇸 Google
PTRyutulis-in-f27.1e100.net
A74.125.27.26🇺🇸 Google
PTRyutulis-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2607:f8b0:4001:c70::1a🇺🇸 Google
PTRyucbful-in-f26.1e100.net
A192.178.209.26🇺🇸 Google
PTRyucbful-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2607:f8b0:4024:c0d::1b🇺🇸 Google
PTRmj-in-f27.1e100.net
A192.178.152.26🇺🇸 Google
PTRmj-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2607:f8b0:4023:403::1a🇺🇸 Google
PTRgg-in-f26.1e100.net
A142.250.96.27🇺🇸 Google
PTRgg-in-f27.1e100.net
TXTv=spf1 +a:sv4.xbiz.ne.jp +a:crefus.com +mx include:spf.sender.xserver.jp incl...
SOAns1.xbiz.ne.jproot@xbiz.ne.jp serial=0

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=1771291435
WOT: SAFE (61/100)

Up

a8clk.crefus.com

Same first word

crefus.com

Similar names

fsecur.com
cerfus.com
cesurf.es
crfuse.com
cesurf.com
fuserc.com
ecsurf.com
fersuc.com.gt

DNS History

17 records (9 active, 8 former)

200920112013201520172019202120232025NSns1.xbiz.ne.jpns2.xbiz.ne.jpns3.xbiz.ne.jpns1.sixcore.ne.jpns2.sixcore.ne.jpns3.sixcore.ne.jpMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.commail.crefus.commx1.firstserver.ne.jpmx2.firstserver.ne.jpA202.254.238.5120.136.9.227164.46.143.177
○NSns1.sixcore.ne.jp2015-07-05 → 2018-05-19 · 5 obs
○ 2008-03-19 19:59:36
● 2015-07-05 18:48:14
● 2018-05-19 17:10:34
○ 2026-02-21 03:28:46
○ 2026-02-21 08:18:14
●NSns1.xbiz.ne.jp2026-02-21 → 2026-02-21 · 3 obs
○ 2018-05-19 17:10:34
● 2026-02-21 03:28:46
● 2026-02-21 08:18:14
○NSns2.sixcore.ne.jp2015-07-05 → 2018-05-19 · 5 obs
○ 2008-03-19 19:59:36
● 2015-07-05 18:48:14
● 2018-05-19 17:10:34
○ 2026-02-21 03:28:46
○ 2026-02-21 08:18:14
●NSns2.xbiz.ne.jp2026-02-21 → 2026-02-21 · 3 obs
○ 2018-05-19 17:10:34
● 2026-02-21 03:28:46
● 2026-02-21 08:18:14
○NSns3.sixcore.ne.jp2015-07-05 → 2018-05-19 · 5 obs
○ 2008-03-19 19:59:36
● 2015-07-05 18:48:14
● 2018-05-19 17:10:34
○ 2026-02-21 03:28:46
○ 2026-02-21 08:18:14
●NSns3.xbiz.ne.jp2026-02-21 → 2026-02-21 · 3 obs
○ 2018-05-19 17:10:34
● 2026-02-21 03:28:46
● 2026-02-21 08:18:14
●MXalt1.aspmx.l.google.com2026-02-21 → 2026-02-21 · 3 obs
○ 2018-05-19 17:10:34
● 2026-02-21 03:28:46
● 2026-02-21 08:18:14
●MXalt2.aspmx.l.google.com2026-02-21 → 2026-02-21 · 3 obs
○ 2018-05-19 17:10:34
● 2026-02-21 03:28:46
● 2026-02-21 08:18:14
●MXalt3.aspmx.l.google.com2026-02-21 → 2026-02-21 · 3 obs
○ 2018-05-19 17:10:34
● 2026-02-21 03:28:46
● 2026-02-21 08:18:14
●MXalt4.aspmx.l.google.com2026-02-21 → 2026-02-21 · 3 obs
○ 2018-05-19 17:10:34
● 2026-02-21 03:28:46
● 2026-02-21 08:18:14
●MXaspmx.l.google.com2026-02-21 → 2026-02-21 · 3 obs
○ 2018-05-19 17:10:34
● 2026-02-21 03:28:46
● 2026-02-21 08:18:14
○MXmail.crefus.com2008-03-19 → 2018-05-19 · 4 obs
● 2008-03-19 19:59:36
● 2018-05-19 17:10:34
○ 2026-02-21 03:28:46
○ 2026-02-21 08:18:14
○MXmx1.firstserver.ne.jp2008-03-19 → 2008-03-19 · 3 obs
● 2008-03-19 19:59:36
○ 2015-07-05 18:48:14
○ 2026-02-21 08:18:14
○MXmx2.firstserver.ne.jp2008-03-19 → 2008-03-19 · 3 obs
● 2008-03-19 19:59:36
○ 2015-07-05 18:48:14
○ 2026-02-21 08:18:14
○A120.136.9.2272015-07-05 → 2018-05-19 · 5 obs
○ 2008-03-19 19:59:36
● 2015-07-05 18:48:14
● 2018-05-19 17:10:34
○ 2026-02-21 03:28:46
○ 2026-02-21 08:18:14
○A164.46.143.1772008-03-19 → 2008-03-19 · 3 obs
● 2008-03-19 19:59:36
○ 2015-07-05 18:48:14
○ 2026-02-21 08:18:14
●A202.254.238.52026-02-21 → 2026-02-21 · 3 obs
○ 2018-05-19 17:10:34
● 2026-02-21 03:28:46
● 2026-02-21 08:18:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comf.gtld-servers.net, h.gtld-servers.net, l.gtld-servers.net, d.gtld-servers.net...-
crefus.comns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp-

✅ Authoritative Response

Server: 35.76.79.244

NS records: ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for crefus.com (unsigned zone)

⏱️ Timing

Total: 1341ms | Queries: -

📄 Records

TypeCountSample Data
A1202.254.238.5
NS3ns2.xbiz.ne.jp, ns3.xbiz.ne.jp...
MX5ASPMX.L.GOOGLE.com (pri: 1), ALT4.ASPMX.L.GOOGLE.com (pri: 10)...
TXT1v=spf1 +a:sv4.xbiz.ne.jp +a:crefus.com +
SOA1ns1.xbiz.ne.jp root.xbiz.ne.jp

AI analysis

crefus.com is the parent of a8clk.crefus.com.

crefus.com resolves to one IP number: 202.254.238.5.

other host names including mail.orange-ntwk.com, sv4.xbiz.ne.jp, nichiyaku-di.jp, kamita.org and www.frontier-pr.jp share IP numbers with crefus.com.

crefus.com is delegated to three name servers ns1.xbiz.ne.jp, ns2.xbiz.ne.jp and ns3.xbiz.ne.jp.

crefus.com at least partially shares name servers with other domains, for instance skiphop.jp, kagaworld.or.jp, soil-net.jp, izu-oshima.or.jp and uonofukushikai.or.jp.

Host names with one IP number: ns1.xbiz.ne.jp points to 157.112.182.247; ns2.xbiz.ne.jp points to 35.76.79.244; ns3.xbiz.ne.jp points to 157.112.191.237.

crefus.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

crefus.com shares some mail servers with other domains, at least partially, for instance ns500671.ns500731.ns500754.ns500742.ns500671.ns500671.ns500704.ns500704.ns500671.ns500666.ns500291.ns500291.ns500131.lustychickser.com, ns500742.ns500671.ns500754.ns500671.ns500671.ns500671.ns500671.ns500649.ns500678.ns500678.tenderladiesbz.com, ns500671.ns500754.ns500742.ns500742.ns500671.ns500704.ns500731.ns500731.ns500688.ns500705.ns500671.ns500291.ns500678.ns500666.ns500653.ns500153.tenderladiesbz.com, ns500754.ns500754.ns500742.ns500704.ns500731.ns500705.ns500704.ns500688.ns500678.ns500666.ns500291.ns500131.lustychickser.com and ns500698.ns500698.ns500698.ns500735.ns500698.ns500736.ns500736.ns500708.ns500708.ns500576.ns500686.ns500686.ns500619.ns500619.trackreceptor.com.

These mail servers are commonly used alongside aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com points to 2607:f8b0:4004:c19::1b and 172.253.62.27

alt1.aspmx.l.google.com points to 2607:f8b0:4003:c30::1b and 74.125.27.26

alt2.aspmx.l.google.com points to 2607:f8b0:4001:c70::1a and 192.178.209.26

alt3.aspmx.l.google.com points to 2607:f8b0:4024:c0d::1b and 192.178.152.26

alt4.aspmx.l.google.com points to 2607:f8b0:4023:403::1a and 142.250.96.27