`opc-certification.com`

DNSSEC	⚠️ Not signed
A	217.160.28.105^{🇩🇪 IONOS-AS217.160.0.0/16 IONOS-PA-3}
		PTR	`allmendinger.de`
NS	`ns1109.ui-dns.org` ⭐
		A	2001:8d8:fe:53:0:d9a0:536d:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1109.ui-dns.org`
		A	217.160.83.109^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1109.ui-dns.org`
NS	`ns1109.ui-dns.biz`
		A	2001:8d8:fe:53:0:d9a0:516d:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1109.ui-dns.biz`
		A	217.160.81.109^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1109.ui-dns.biz`
NS	`ns1109.ui-dns.com`
		A	2001:8d8:fe:53:0:d9a0:526d:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1109.ui-dns.com`
		A	217.160.82.109^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1109.ui-dns.com`
NS	`ns1109.ui-dns.de`
		A	2607:f1c0:fe:53:185:132:32:109^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns1109.ui-dns.de`
		A	185.132.32.109^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns1109.ui-dns.de`
		A	217.160.80.109^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1109.ui-dns.de`
MX	`mx00.ionos.de` ⭐
		A	212.227.15.41^{🇩🇪 IONOS-AS212.227.0.0/16 IONOS-PA-2}
			PTR	`mx00.kundenserver.de`
MX	`mx01.ionos.de` ⭐
		A	217.72.192.67^{🇩🇪 IONOS-AS217.72.192.0/20 Web.de}
			PTR	`mx01.kundenserver.de`
TXT	`v=spf1 include:_spf-eu.ionos.com ~all`
SOA	`ns1109.ui-dns.org`hostmaster@kundenserver.de 2016-11-04 #14

`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=1774748702

Same first word

opc-certification.com

DNS History

15 records (7 active, 8 former)

○NSns-de.1and1-dns.biz2016-12-20 → 2016-12-20 · 3 obs

● 2016-12-20 05:49:32
○ 2019-03-30 09:27:22
○ 2026-03-29 01:50:44

○NSns-de.1and1-dns.com2016-12-20 → 2016-12-20 · 3 obs

● 2016-12-20 05:49:32
○ 2019-03-30 09:27:22
○ 2026-03-29 01:50:44

○NSns-de.1and1-dns.de2016-12-20 → 2016-12-20 · 3 obs

● 2016-12-20 05:49:32
○ 2019-03-30 09:27:22
○ 2026-03-29 01:50:44

○NSns-de.1and1-dns.org2016-12-20 → 2016-12-20 · 3 obs

● 2016-12-20 05:49:32
○ 2019-03-30 09:27:22
○ 2026-03-29 01:50:44

●NSns1109.ui-dns.biz2019-03-30 → 2026-03-29 · 3 obs

○ 2016-12-20 05:49:32
● 2019-03-30 09:27:22
● 2026-03-29 01:50:44

●NSns1109.ui-dns.com2019-03-30 → 2026-03-29 · 3 obs

○ 2016-12-20 05:49:32
● 2019-03-30 09:27:22
● 2026-03-29 01:50:44

●NSns1109.ui-dns.de2019-03-30 → 2026-03-29 · 3 obs

○ 2016-12-20 05:49:32
● 2019-03-30 09:27:22
● 2026-03-29 01:50:44

●NSns1109.ui-dns.org2019-03-30 → 2026-03-29 · 3 obs

○ 2016-12-20 05:49:32
● 2019-03-30 09:27:22
● 2026-03-29 01:50:44

○MXallmendinger.de2016-12-20 → 2019-03-30 · 4 obs

● 2016-12-20 05:49:32
● 2019-03-30 09:27:22
○ 2026-02-22 22:57:10
○ 2026-03-29 01:50:44

●MXmx00.ionos.de2026-02-22 → 2026-03-29 · 3 obs

○ 2019-03-30 09:27:22
● 2026-02-22 22:57:10
● 2026-03-29 01:50:44

○MXmx00.kundenserver.de2016-12-20 → 2019-03-30 · 4 obs

● 2016-12-20 05:49:32
● 2019-03-30 09:27:22
○ 2026-02-22 22:57:10
○ 2026-03-29 01:50:44

●MXmx01.ionos.de2026-02-22 → 2026-03-29 · 3 obs

○ 2019-03-30 09:27:22
● 2026-02-22 22:57:10
● 2026-03-29 01:50:44

○MXmx01.kundenserver.de2016-12-20 → 2019-03-30 · 4 obs

● 2016-12-20 05:49:32
● 2019-03-30 09:27:22
○ 2026-02-22 22:57:10
○ 2026-03-29 01:50:44

●A217.160.28.1052019-03-30 → 2026-03-29 · 3 obs

○ 2016-12-20 05:49:32
● 2019-03-30 09:27:22
● 2026-03-29 01:50:44

○A87.106.61.1112016-12-20 → 2016-12-20 · 3 obs

● 2016-12-20 05:49:32
○ 2019-03-30 09:27:22
○ 2026-03-29 01:50:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, d.gtld-servers.net, f.gtld-servers.net, j.gtld-servers.net...	-
opc-certification.com	ns1109.ui-dns.de, ns1109.ui-dns.biz, ns1109.ui-dns.org, ns1109.ui-dns.com	2 records

✅ Authoritative Response

Server:217.160.82.109

NS records: ns1109.ui-dns.de, ns1109.ui-dns.biz, ns1109.ui-dns.org, ns1109.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opc-certification.com (unsigned zone)

⏱️ Timing

Total: 496ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`217.160.28.105`
NS	4	`ns1109.ui-dns.com, ns1109.ui-dns.biz...`
MX	2	`mx00.ionos.de (pri: 10), mx01.ionos.de (pri: 10)`
TXT	1	`v=spf1 include:_spf-eu.ionos.com ~all`
SOA	1	`ns1109.ui-dns.org hostmaster.kundenserve`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1109.ui-dns.com, ns1109.ui-dns.com)

Analysis

IP Addresses

opc-certification.com resolves to a single IP: 217.160.28.105.

Other host names, for instance allmendinger.de, webmail.allmendinger.de, mail.allmendinger.de, wotus.de and www.allmendinger.de share IP numbers with opc-certification.com.

Name Servers

opc-certification.com is delegated to four name servers: ns1109.ui-dns.biz, ns1109.ui-dns.com, ns1109.ui-dns.de and ns1109.ui-dns.org.

opc-certification.com shares some name servers with other domains, for example bms-koehler.de, apro10.com, magro.me, themeissners.de and proskenet.de.

These name servers are often used together with ns1080.ui-dns.com, ns1119.ui-dns.com, ns1084.ui-dns.org, ns1061.ui-dns.de, ns1044.ui-dns.de, ns1065.ui-dns.biz, ns1123.ui-dns.com, ns1090.ui-dns.org and ns1033.ui-dns.com.

Host names with three IP numbers:

ns1109.ui-dns.de points to 2607:f1c0:fe:53:185:132:32:109, 185.132.32.109 and 217.160.80.109.

Host names with two IP numbers:

ns1109.ui-dns.biz points to 2001:8d8:fe:53:0:d9a0:516d:100 and 217.160.81.109.

ns1109.ui-dns.com points to 2001:8d8:fe:53:0:d9a0:526d:100 and 217.160.82.109.

ns1109.ui-dns.org points to 2001:8d8:fe:53:0:d9a0:536d:100 and 217.160.83.109.

Mail Servers

opc-certification.com is served by two mail servers: mx00.ionos.de and mx01.ionos.de.

opc-certification.com shares the mail server setup with other domains, for example beton8.de, arneli.com, eigenhaendig.org, cosh.computer and medipro.info.

Host names with a single IP:

mx00.ionos.de points to 212.227.15.41

mx01.ionos.de points to 217.72.192.67

opc-certification.com - robtex.com