`roundcubesoftware.com`

DNSSEC	🔒 Signed (DS record present)
A	185.110.175.67^{🇳🇱 XL-AS185.110.172.0/22 XL Network}
		PTR	`unassigned.ams.resource.cloud`
NS	`ns11.kpn.net` ⭐
		A	2a02:a47f:ac:1::1153^{🇳🇱 KPN2a02:a400::/25 B.V.}
			PTR	`ns11.kpn.net`
			PTR	`ns1.widexs.net`
			PTR	`ns01.is.nl`
			PTR	`ns1.widexs.nl`
		A	213.75.63.33^{🇳🇱 PT213.75.0.0/17 PIADDR}
			PTR	`ns11.kpn.net`
			PTR	`ns1.widexs.net`
			PTR	`ns01.is.nl`
			PTR	`ns1.widexs.nl`
NS	`ns1.kpn.net`
		A	2a02:a47f:ac:1::153^{🇳🇱 KPN2a02:a400::/25 B.V.}
			PTR	`ns1.kpn.net`
		A	194.151.228.10^{🇩🇪 KPN194.151.224.0/19 B.V.}
			PTR	`ns1.kpn.net`
TXT	`v=spf1 -all`
TXT	`C0O0M14206`
SOA	`ns1.kpn.net`zonemaster@kpn.com 2026-03-19 #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=1771291435

PTR for

205.150.172.193.in-addr.arpa

Same first word

roundcubesoftware.com

DNS History

9 records (3 active, 6 former)

●NSns1.kpn.net2016-12-16 → 2026-03-23 · 2 obs

● 2016-12-16 17:04:02
● 2026-03-23 16:42:12

●NSns11.kpn.net2026-03-05 → 2026-03-23 · 3 obs

○ 2017-07-06 08:06:04
● 2026-03-05 09:54:18
● 2026-03-23 16:42:12

○NSns2.kpn.net2016-12-16 → 2017-07-06 · 4 obs

● 2016-12-16 17:04:02
● 2017-07-06 08:06:04
○ 2026-03-05 09:54:18
○ 2026-03-23 16:42:12

○MX.2026-03-05 → 2026-03-23 · 2 obs

○ 2026-03-05 09:54:18
○ 2026-03-23 16:42:12

○MXcluster4.eu.messagelabs.com2016-12-16 → 2017-07-06 · 4 obs

● 2016-12-16 17:04:02
● 2017-07-06 08:06:04
○ 2026-03-05 09:54:18
○ 2026-03-23 16:42:12

○MXcluster4a.eu.messagelabs.com2016-12-16 → 2017-07-06 · 4 obs

● 2016-12-16 17:04:02
● 2017-07-06 08:06:04
○ 2026-03-05 09:54:18
○ 2026-03-23 16:42:12

●A185.110.175.672026-03-05 → 2026-03-23 · 3 obs

○ 2017-07-06 08:06:04
● 2026-03-05 09:54:18
● 2026-03-23 16:42:12

○A193.172.150.2052017-07-06 → 2017-07-06 · 4 obs

○ 2016-12-16 17:04:02
● 2017-07-06 08:06:04
○ 2026-03-05 09:54:18
○ 2026-03-23 16:42:12

○A37.60.237.1112016-12-16 → 2016-12-16 · 3 obs

● 2016-12-16 17:04:02
○ 2017-07-06 08:06:04
○ 2026-03-23 16:42:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, m.gtld-servers.net, g.gtld-servers.net, i.gtld-servers.net...	-
roundcubesoftware.com	ns1.kpn.net, ns11.kpn.net	-

✅ Authoritative Response

Server:194.151.228.10

NS records: ns1.kpn.net, ns11.kpn.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 742ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.110.175.67`
NS	2	`ns11.kpn.net, ns1.kpn.net`
MX	1	`. (pri: 0)`
TXT	2	`C0O0M14206, v=spf1 -all`
SOA	1	`ns1.kpn.net zonemaster.kpn.com`

Analysis

IP Addresses

roundcubesoftware.com points to IP number 185.110.175.67.

Other host names, for example nierdonatiebijleven.nl and www.nierdonatiebijleven.nl, share IPs with roundcubesoftware.com.

Name Servers

roundcubesoftware.com is delegated to two name servers: ns11.kpn.net and ns1.kpn.net.

roundcubesoftware.com uses the same name server setup as other domains such as telfort.nl, piqa.nl, isalaouderenziekenhuis.nl, glashart-media.com and mijnpconline.eu.

roundcubesoftware.com shares name servers with other domains at least partially, for instance hierinloggen.nl and biz.kpn.net.

Host names with two IP numbers:

ns11.kpn.net points to 2a02:a47f:ac:1::1153 and 213.75.63.33; ns1.kpn.net points to 2a02:a47f:ac:1::153 and 194.151.228.10.

roundcubesoftware.com - robtex.com