refrec.com - dns.ninja

`refrec.com`

DNSSEC	⚠️ Not signed
A	163.43.80.21^{🇯🇵 SAKURA-B163.43.0.0/16 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan}
		PTR	`www3711.sakura.ne.jp`
NS	`master.dns.ne.jp` ⭐
		A	210.224.172.18^{🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`master.dns.ne.jp`
NS	`ns1.dns.ne.jp`
		A	61.211.236.1^{🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`ns1.dns.ne.jp`
NS	`ns2.dns.ne.jp`
		A	133.167.21.1^{🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan}
			PTR	`ns2.dns.ne.jp`
MX	`refrec.com` ⭐
		A	163.43.80.21^{🇯🇵 SAKURA-B163.43.0.0/16 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan}
			PTR	`www3711.sakura.ne.jp`
TXT	`v=spf1 ip4:210.134.58.188 ip4:133.18.38.188 a:www3711.sakura.ne.jp include:_s...`
TXT	`MS=ms94950879`
SOA	`master.dns.ne.jp`tech@sakura.ad.jp 2026-06-03 #1

`com`

	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=1783273336

MX for

refrec.com

Same first word

refrec.jp

refrec.com

Similar names

freecr.me

recref.com

rcfree.me

rcfree.de

crefre.net

freecr.com

cfreer.org

creerf.com

cerfer.com

crfree.ir

ceerrf.fr

crefre.com

ferrec.fr

ceerrf.com

freerc.com

fercer.com

frerec.com

frecer.com

ferrec.eu

recfer.com

recref.co.kr

cfreer.com

cfreer.net

crefer.com

rcfree.com

frecre.com

cerfer.org

crfree.com

creref.com

fercre.com

DNS History

11 records (5 active, 6 former)

○NSdns.interq.or.jp2008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 00:01:54
○ 2015-05-27 05:21:36
○ 2026-07-05 17:42:44

○NSdns1.interq.or.jp2008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 00:01:54
○ 2015-05-27 05:21:36
○ 2026-07-05 17:42:44

●NSmaster.dns.ne.jp2015-05-27 → 2026-07-05 · 3 obs

○ 2008-03-20 00:01:54
● 2015-05-27 05:21:36
● 2026-07-05 17:42:44

●NSns1.dns.ne.jp2015-05-27 → 2026-07-05 · 3 obs

○ 2008-03-20 00:01:54
● 2015-05-27 05:21:36
● 2026-07-05 17:42:44

●NSns2.dns.ne.jp2015-05-27 → 2026-07-05 · 3 obs

○ 2008-03-20 00:01:54
● 2015-05-27 05:21:36
● 2026-07-05 17:42:44

●MXrefrec.com2015-05-27 → 2026-07-05 · 3 obs

○ 2008-03-20 00:01:54
● 2015-05-27 05:21:36
● 2026-07-05 17:42:44

○MXsmtp.refrec.com2008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 00:01:54
○ 2015-05-27 05:21:36
○ 2026-07-05 17:42:44

○MXvs.mailsystems.net2008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 00:01:54
○ 2015-05-27 05:21:36
○ 2026-07-05 17:42:44

●A163.43.80.212026-02-23 → 2026-07-05 · 3 obs

○ 2018-06-10 17:00:00
● 2026-02-23 22:10:24
● 2026-07-05 17:42:44

○A211.125.95.1872008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 00:01:54
○ 2015-05-27 05:21:36
○ 2026-07-05 17:42:44

○A59.106.171.442015-05-27 → 2018-06-10 · 5 obs

○ 2008-03-20 00:01:54
● 2015-05-27 05:21:36
● 2018-06-10 17:00:00
○ 2026-02-23 22:10:24
○ 2026-07-05 17:42:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
refrec.com	ns1.dns.ne.jp, ns2.dns.ne.jp	-

✅ Authoritative Response

Server:133.167.21.1

NS records: ns1.dns.ne.jp, ns2.dns.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for refrec.com (unsigned zone)

⏱️ Timing

Total: 827ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`163.43.80.21`
NS	2	`ns1.dns.ne.jp, ns2.dns.ne.jp`
MX	1	`refrec.com (pri: 10)`
TXT	2	`v=spf1 ip4:210.134.58.188 ip4:133.18.38., MS=ms94950879`
SOA	1	`master.dns.ne.jp tech.sakura.ad.jp`

Analysis

Mail Server Role

refrec.com is listed as a mail server for itself.

IP Addresses

refrec.com resolves to one IP address: 163.43.80.21.

jpk-trust.com, www3711.sakura.ne.jp, aquatech.biz and two other host names share IP numbers with refrec.com.

Name Servers

refrec.com is served by three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

refrec.com shares at least some of its name servers with other domains, including tryfull.co.jp, rea-ch.jp, shochan.sakura.ne.jp and two others.

These name servers are frequently seen alongside the name servers dns.sakura.ad.jp.

master.dns.ne.jp has IP address 210.224.172.18, ns1.dns.ne.jp has IP address 61.211.236.1 and ns2.dns.ne.jp has IP address 133.167.21.1 — one address each.

Mail Servers

Mail for refrec.com is handled by one mail server — refrec.com.

refrec.com resolves to 163.43.80.21 and no other IP number.