doubleyou.de - robtex.com

doubleyou.de

DNSSEC⚠️ Not signed
A217.5.169.171🇩🇪 DTAG217.0.0.0/13 Deutsche Telekom AG, Internet service provider
NSns.udag.de ⭐
A2001:8d8:fe:53:217:160:80:253🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns.udag.de
A217.160.80.253🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns.udag.de
NSns.udag.net
A2607:f1c0:fe:53:185:132:33:253🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRns.udag.net
A185.132.33.253🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRns.udag.net
NSns.udag.org
A2607:f1c0:fe:53:185:132:34:253🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRns.udag.org
A185.132.34.253🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRns.udag.org
MXdoubleyou-de.mail.protection.outlook.com ⭐
A2a01:111:f403:ca27::🇩🇪 Microsoft2a01:111:f000::/36
PTRmail-beup281cu00100.inbound.protection.outlook.com
A2a01:111:f403:ca2d::🇩🇪 Microsoft2a01:111:f000::/36
PTRmail-fr5p281cu00500.inbound.protection.outlook.com
A2a01:111:f403:ca2d::1🇩🇪 Microsoft2a01:111:f000::/36
PTRmail-fr4p281cu03101.inbound.protection.outlook.com
A2a01:111:f403:ca2d::2🇩🇪 Microsoft2a01:111:f000::/36
PTRmail-fr6p281cu00202.inbound.protection.outlook.com
A52.101.168.0🇩🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-beup281cu00100.inbound.protection.outlook.com
A52.101.170.0🇩🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-fr5p281cu00500.inbound.protection.outlook.com
A52.101.170.1🇩🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-fr4p281cu03101.inbound.protection.outlook.com
A52.101.170.2🇩🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-fr6p281cu00202.inbound.protection.outlook.com
TXTv=spf1 ip4:217.5.169.0/24 ip4:62.159.31.128/25 ip4:217.89.68.112 include:spf....
SOAns.udag.dehostmaster@united-domains.de 2026-03-20 #61

de

DNSSEC🔒 Signed (DS record present)
NSf.nic.de ⭐
NSa.nic.de
NSl.de.net ⚠️ Not in parent delegation
NSn.de.net ⚠️ Not in parent delegation
NSs.de.net ⚠️ Not in parent delegation
NSz.nic.de
SOAf.nic.dedns-operations@denic.de serial=1774506384

Same first word

doubleyou.cz
doubleyou.de
doubleyou.kr
doubleyou.it
doubleyou.com
doubleyou.me
doubleyou.net

Similar names

youdouble.com

DNS History

12 records (5 active, 7 former)

20162017201820192020202120222023202420252026NSns.udag.dens.udag.netns.udag.orgns.types.depns.dtag.desecondary004.dtag.netsecondary006.dtag.netMXdoubleyou-de.mail.protection.outlook.commail.doubleyou.demforward.dtag.deA217.5.169.171217.5.169.135
○NSns.types.de2015-07-12 → 2020-02-16 · 3 obs
● 2015-07-12 23:32:30
● 2020-02-16 20:06:04
○ 2026-03-26 06:41:18
●NSns.udag.de2026-03-26 → 2026-03-26 · 2 obs
○ 2020-02-16 20:06:04
● 2026-03-26 06:41:18
●NSns.udag.net2026-03-26 → 2026-03-26 · 2 obs
○ 2020-02-16 20:06:04
● 2026-03-26 06:41:18
●NSns.udag.org2026-03-26 → 2026-03-26 · 2 obs
○ 2020-02-16 20:06:04
● 2026-03-26 06:41:18
○NSpns.dtag.de2015-07-12 → 2020-02-16 · 3 obs
● 2015-07-12 23:32:30
● 2020-02-16 20:06:04
○ 2026-03-26 06:41:18
○NSsecondary004.dtag.net2026-03-26 → 2026-03-26 · 1 obs
○ 2026-03-26 06:41:18
○NSsecondary006.dtag.net2015-07-12 → 2020-02-16 · 3 obs
● 2015-07-12 23:32:30
● 2020-02-16 20:06:04
○ 2026-03-26 06:41:18
●MXdoubleyou-de.mail.protection.outlook.com2026-03-26 → 2026-03-26 · 2 obs
○ 2020-02-16 20:06:04
● 2026-03-26 06:41:18
○MXmail.doubleyou.de2015-07-12 → 2020-02-16 · 3 obs
● 2015-07-12 23:32:30
● 2020-02-16 20:06:04
○ 2026-03-26 06:41:18
○MXmforward.dtag.de2015-07-12 → 2020-02-16 · 3 obs
● 2015-07-12 23:32:30
● 2020-02-16 20:06:04
○ 2026-03-26 06:41:18
○A217.5.169.1352015-07-12 → 2020-02-16 · 3 obs
● 2015-07-12 23:32:30
● 2020-02-16 20:06:04
○ 2026-03-26 06:41:18
●A217.5.169.1712026-03-26 → 2026-03-26 · 2 obs
○ 2020-02-16 20:06:04
● 2026-03-26 06:41:18

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dea.nic.de, f.nic.de, z.nic.de-
doubleyou.dens.udag.org, ns.udag.net, ns.udag.de2 records

✅ Authoritative Response

Server:185.132.33.253

NS records: ns.udag.org, ns.udag.net, ns.udag.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for doubleyou.de (unsigned zone)

⏱️ Timing

Total: 660ms | Queries: -

📄 Records

TypeCountSample Data
A1217.5.169.171
NS3ns.udag.net, ns.udag.org...
MX1doubleyou-de.mail.protection.outlook.com
TXT1v=spf1 ip4:217.5.169.0/24 ip4:62.159.31.
SOA1ns.udag.de hostmaster.united-domains.de

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns.udag.de, ns.udag.de)

Analysis

IP Addresses

doubleyou.de points to a single IP address: 217.5.169.171.

Other host names, for instance netsdirekt.de, share IP numbers with doubleyou.de.

Name Servers

doubleyou.de is delegated to three name servers: ns.udag.de, ns.udag.net and ns.udag.org.

At least part of the name servers for doubleyou.de are shared with other domains, for instance telefon(0x736578).fan, matthies.in, lzclocks.com, physiosummit.com and easygo.tv.

Host names with two IP numbers:

ns.udag.de points to 2001:8d8:fe:53:217:160:80:253 and 217.160.80.253

ns.udag.net points to 2607:f1c0:fe:53:185:132:33:253 and 185.132.33.253

ns.udag.org points to 2607:f1c0:fe:53:185:132:34:253 and 185.132.34.253

Mail Servers

The mail server for doubleyou.de is doubleyou-de.mail.protection.outlook.com.

doubleyou-de.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca27::, 2a01:111:f403:ca2d::, 2a01:111:f403:ca2d::1, 2a01:111:f403:ca2d::2, 52.101.168.0, 52.101.170.0, 52.101.170.1 and 52.101.170.2.