`cor-online.com`

DNSSEC	⚠️ Not signed
A	2607:f1c0:100f:f000::272^{🇺🇸 IONOS-AS2607:f1c0::/32 1&1 Internet Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
		PTR	`2607-f1c0-100f-f000-0000-0000-0000-0272.elastic-ssl.ui-r.com`
A	74.208.236.111^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
NS	`ns1122.ui-dns.biz` ⭐
		A	2001:8d8:fe:53:0:d9a0:517a:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1122.ui-dns.biz`
		A	217.160.81.122^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1122.ui-dns.biz`
NS	`ns1122.ui-dns.com`
		A	2001:8d8:fe:53:0:d9a0:527a:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1122.ui-dns.com`
		A	217.160.82.122^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1122.ui-dns.com`
NS	`ns1122.ui-dns.de`
		A	2607:f1c0:fe:53:185:132:32:122^{🇺🇸 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	`ns1122.ui-dns.de`
		A	217.160.80.122^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1122.ui-dns.de`
NS	`ns1122.ui-dns.org`
		A	2001:8d8:fe:53:0:d9a0:537a:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1122.ui-dns.org`
		A	217.160.83.122^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1122.ui-dns.org`
MX	`mx00.ionos.com` ⭐
		A	74.208.5.3^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx00.perfora.net`
MX	`mx01.ionos.com` ⭐
		A	74.208.5.21^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx01.perfora.net`
TXT	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	`ns1122.ui-dns.biz`hostmaster@1and1.com 2016-10-24 #12

`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=1774513307

Previously MX for

cor-online.com

Same first word

cor-online.com

Similar names

roc-online.de

color-nine.com

rco-online.com

online-ocr.de

orc-online.co.uk

ocr-online.com

cro-online.de

cro-online.pl

DNS History

18 records (8 active, 10 former)

○NSns-us.1and1-dns.com2016-12-31 → 2016-12-31 · 4 obs

○ 2016-04-29 12:43:12
● 2016-12-31 07:39:56
○ 2017-12-23 21:20:06
○ 2026-03-26 08:43:48

○NSns-us.1and1-dns.de2016-12-31 → 2016-12-31 · 4 obs

○ 2016-04-29 12:43:12
● 2016-12-31 07:39:56
○ 2017-12-23 21:20:06
○ 2026-03-26 08:43:48

○NSns-us.1and1-dns.org2016-12-31 → 2016-12-31 · 4 obs

○ 2016-04-29 12:43:12
● 2016-12-31 07:39:56
○ 2017-12-23 21:20:06
○ 2026-03-26 08:43:48

○NSns-us.1and1-dns.us2016-12-31 → 2016-12-31 · 4 obs

○ 2016-04-29 12:43:12
● 2016-12-31 07:39:56
○ 2017-12-23 21:20:06
○ 2026-03-26 08:43:48

○NSns1.ro-online.org2015-07-06 → 2015-07-06 · 3 obs

● 2015-07-06 08:28:40
○ 2016-04-29 12:43:12
○ 2026-03-26 08:43:48

●NSns1122.ui-dns.biz2017-12-23 → 2026-03-26 · 3 obs

○ 2016-12-31 07:39:56
● 2017-12-23 21:20:06
● 2026-03-26 08:43:48

●NSns1122.ui-dns.com2017-12-23 → 2026-03-26 · 3 obs

○ 2016-12-31 07:39:56
● 2017-12-23 21:20:06
● 2026-03-26 08:43:48

●NSns1122.ui-dns.de2017-12-23 → 2026-03-26 · 3 obs

○ 2016-12-31 07:39:56
● 2017-12-23 21:20:06
● 2026-03-26 08:43:48

●NSns1122.ui-dns.org2017-12-23 → 2026-03-26 · 3 obs

○ 2016-12-31 07:39:56
● 2017-12-23 21:20:06
● 2026-03-26 08:43:48

○NSns2.ro-online.org2015-07-06 → 2015-07-06 · 3 obs

● 2015-07-06 08:28:40
○ 2016-04-29 12:43:12
○ 2026-03-26 08:43:48

○MXcor-online.com2015-07-06 → 2015-07-06 · 3 obs

● 2015-07-06 08:28:40
○ 2016-04-29 12:43:12
○ 2026-03-26 08:43:48

○MXmx00.1and1.com2016-12-31 → 2017-12-23 · 5 obs

○ 2016-04-29 12:43:12
● 2016-12-31 07:39:56
● 2017-12-23 21:20:06
○ 2026-02-15 07:42:56
○ 2026-03-26 08:43:48

●MXmx00.ionos.com2026-02-15 → 2026-03-26 · 3 obs

○ 2017-12-23 21:20:06
● 2026-02-15 07:42:56
● 2026-03-26 08:43:48

○MXmx01.1and1.com2016-12-31 → 2017-12-23 · 5 obs

○ 2016-04-29 12:43:12
● 2016-12-31 07:39:56
● 2017-12-23 21:20:06
○ 2026-02-15 07:42:56
○ 2026-03-26 08:43:48

●MXmx01.ionos.com2026-02-15 → 2026-03-26 · 3 obs

○ 2017-12-23 21:20:06
● 2026-02-15 07:42:56
● 2026-03-26 08:43:48

○A209.105.241.1942015-07-06 → 2015-07-06 · 3 obs

● 2015-07-06 08:28:40
○ 2016-04-29 12:43:12
○ 2026-03-26 08:43:48

●A2607:f1c0:100f:f000::2722016-12-31 → 2026-03-26 · 3 obs

○ 2016-04-29 12:43:12
● 2016-12-31 07:39:56
● 2026-03-26 08:43:48

●A74.208.236.1112016-12-31 → 2026-03-26 · 3 obs

○ 2016-04-29 12:43:12
● 2016-12-31 07:39:56
● 2026-03-26 08:43:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, a.gtld-servers.net, j.gtld-servers.net, f.gtld-servers.net...	-
cor-online.com	ns1122.ui-dns.de, ns1122.ui-dns.biz, ns1122.ui-dns.org, ns1122.ui-dns.com	2 records

✅ Authoritative Response

Server:217.160.82.122

NS records: ns1122.ui-dns.de, ns1122.ui-dns.biz, ns1122.ui-dns.org, ns1122.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cor-online.com (unsigned zone)

⏱️ Timing

Total: 767ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`74.208.236.111`
AAAA	1	`2607:f1c0:100f:f000::272`
NS	4	`ns1122.ui-dns.de, ns1122.ui-dns.biz...`
MX	2	`mx00.ionos.com (pri: 10), mx01.ionos.com (pri: 10)`
TXT	1	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	1	`ns1122.ui-dns.biz hostmaster.1and1.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1122.ui-dns.com, ns1122.ui-dns.com)

Analysis

IP Addresses

cor-online.com resolves to two IP numbers: 2607:f1c0:100f:f000::272 and 74.208.236.111.

Other host names, for instance www.cedat.com.mx, djacapellas.com, howdenmedicalclinic.com, www.easyviewer.net and bobw.us share IP numbers with cor-online.com.

Name Servers

cor-online.com's delegation is handled by four name servers: ns1122.ui-dns.biz, ns1122.ui-dns.com, ns1122.ui-dns.de and ns1122.ui-dns.org.

cor-online.com partially shares name servers with other domains; examples include phonecardmuseum.org, blacksheep-store.it, spsims.com, tefholdings.com and pflegedienst-care.com.

These name servers commonly accompany ns1085.ui-dns.com, ns1100.ui-dns.de, ns1016.ui-dns.org and ns1022.ui-dns.com.

Host names with two IPs:

ns1122.ui-dns.biz points to 2001:8d8:fe:53:0:d9a0:517a:100 and 217.160.81.122

ns1122.ui-dns.com points to 2001:8d8:fe:53:0:d9a0:527a:100 and 217.160.82.122

ns1122.ui-dns.de points to 2607:f1c0:fe:53:185:132:32:122 and 217.160.80.122

ns1122.ui-dns.org points to 2001:8d8:fe:53:0:d9a0:537a:100 and 217.160.83.122

Mail Servers

cor-online.com is handled by two mail servers: mx00.ionos.com and mx01.ionos.com.

cor-online.com has the same mail server setup as other domains, including privacy.im, j5l.org, httpfiles.com, maxsierra.com and mervil.com.

Host names with one IP number: The host name mx00.ionos.com points to 74.208.5.3 and the host name mx01.ionos.com points to 74.208.5.21.

cor-online.com - robtex.com

cor-online.com

com

Previously MX for

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`cor-online.com`

`com`