opt1dev.nl - dns.ninja

`opt1dev.nl`

DNSSEC	🔒 Signed (DS record present)
A	2a01:238:20a:202:1094::^{🇩🇪 STRATO2a01:238:20a::/48 Strato AG}
		PTR	`w8e.rzone.de`
A	81.169.145.94^{🇩🇪 STRATO81.169.144.0/22 AG}
NS	`docks15.rzone.de` ⭐
		A	2001:8d8:fe:53:5747:2a74:d:15^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`docks15.rzone.de`
		A	217.160.80.142^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`docks15.rzone.de`
NS	`shades20.rzone.de`
		A	2607:f1c0:fe:53:185:132:34:147^{🇺🇸 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	`shades20.rzone.de`
		A	185.132.34.147^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`shades20.rzone.de`
MX	`opt1dev-nl.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::b^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-dbbpr03cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::f^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db7pr03cu00507.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::3^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am6pr04cu00303.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::f^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00307.inbound.protection.outlook.com`
		A	52.101.68.8^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-du0pr03cu00100.inbound.protection.outlook.com`
		A	52.101.68.29^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dbapr03cu00105.inbound.protection.outlook.com`
		A	52.101.73.15^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.73.26^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as9pr05cu01302.inbound.protection.outlook.com`
TXT	`atlassian-domain-verification=E0W8RRQxpfs9I1QakipTxW/1kKqaR2YpxgYSgnhhWg6DzsB...`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
TXT	`MS=ms42473017`
TXT	`google-site-verification=K03zb3HpNVmlaGK39pwrx8kn1RLjUPLtrgBFnVs74-o`
SOA	`docks15.rzone.de`hostmaster@strato-rz.de serial=2020063804

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-07-19 03:30:01 +0000 (EPOCH 1784431801)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-07-19 #7

Same first word

opt1dev.nl

DNS History

5 records (5 active, 0 former)

●NSdocks15.rzone.de2026-04-03 → 2026-07-19 · 2 obs

● 2026-04-03 00:15:22
● 2026-07-19 04:37:00

●NSshades20.rzone.de2026-04-03 → 2026-07-19 · 2 obs

● 2026-04-03 00:15:22
● 2026-07-19 04:37:00

●MXopt1dev-nl.mail.protection.outlook.com2026-04-03 → 2026-07-19 · 2 obs

● 2026-04-03 00:15:22
● 2026-07-19 04:37:00

●A2a01:238:20a:202:1094::2026-04-03 → 2026-07-19 · 2 obs

● 2026-04-03 00:15:22
● 2026-07-19 04:37:00

●A81.169.145.942026-04-03 → 2026-07-19 · 2 obs

● 2026-04-03 00:15:22
● 2026-07-19 04:37:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns4.dns.nl, ns3.dns.nl, ns1.dns.nl	-
opt1dev.nl	docks15.rzone.de, shades20.rzone.de	-

✅ Authoritative Response

Server:185.132.34.147

NS records: docks15.rzone.de, shades20.rzone.de

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 745ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.169.145.94`
AAAA	1	`2a01:238:20a:202:1094::`
NS	2	`docks15.rzone.de, shades20.rzone.de`
MX	1	`opt1dev-nl.mail.protection.outlook.com (`
TXT	4	`atlassian-domain-verification=E0W8RRQxpf, v=spf1 include:spf.protection.outlook.co...`
SOA	1	`docks15.rzone.de hostmaster.strato-rz.de`

Analysis

IP Addresses

opt1dev.nl resolves to the IP addresses 81.169.145.94 and 2a01:238:20a:202:1094::

cramer-stuben.de, massing.info, slowretail.de plus two other host names have IP numbers in common with opt1dev.nl.

Name Servers

DNS delegation for opt1dev.nl points to two name servers: docks15.rzone.de and shades20.rzone.de.

The name server configuration of opt1dev.nl is shared with other domains, for instance assmanns.com, mona-moon.com, asesorialuishervas.com and two others.

opt1dev.nl has at least partial name server overlap with other domains, such as automobile-mueller.info, air-bs.com, easydigit.de and two others.

docks17.rzone.de, shades16.rzone.de and shades02.rzone.de — plus 7 other name servers — are commonly paired with these name servers.

docks15.rzone.de directs to 217.160.80.142 and 2001:8d8:fe:53:5747:2a74:d:15. shades20.rzone.de directs to 185.132.34.147 and 2607:f1c0:fe:53:185:132:34:147. Each host name carries two IP addresses.

Mail Servers

opt1dev.nl uses one mail server — opt1dev-nl.mail.protection.outlook.com.

opt1dev-nl.mail.protection.outlook.com has 8 IP addresses: 52.101.68.8, 52.101.68.29, 52.101.73.15 plus 5 more.