21er.at - robtex.com

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21er.at checked at 2026-01-20T20:10:39.426Z 0ms 99/99/99 100% R:0 allDone:true timedOut:false cfaller:17f36201/21:b5598a42:6:15680:-:-:-

21er.at

NSns1.world4you.at
A2607:f1c0:fe:53:185:132:32:253🇺🇸 IONOS-ANYCAST
PTRns1.world4you.at
A185.132.32.253🇩🇪 IONOS-ANYCAST
PTRns1.world4you.at
NSns2.world4you.at
A2001:8d8:fe:53:217:160:82:253🇩🇪 IONOS-AS
PTRns2.world4you.at
A217.160.82.253🇩🇪 IONOS-AS
PTRns2.world4you.at
MX21er-at.mail.protection.outlook.com
A2a01:111:f403:ca04::4🇮🇪 Microsoft
PTRmail-db4pr02cu00204.inbound.protection.outlook.com
A2a01:111:f403:ca04::8🇮🇪 Microsoft
PTRmail-db5pr02cu00100.inbound.protection.outlook.com
A2a01:111:f403:ca04::a🇮🇪 Microsoft
PTRmail-du0pr03cu00102.inbound.protection.outlook.com
A2a01:111:f403:ca09::a🇳🇱 Microsoft
PTRmail-as8pr05cu00202.inbound.protection.outlook.com
A52.101.73.21🇳🇱 Microsoft
PTRmail-as8pr05cu00205.inbound.protection.outlook.com
A52.101.73.22🇳🇱 Microsoft
PTRmail-am7pr05cu00106.inbound.protection.outlook.com
A52.101.73.24🇳🇱 Microsoft
PTRmail-as8pr05cu00300.inbound.protection.outlook.com
A52.101.73.28🇳🇱 Microsoft
PTRmail-am7pr05cu00204.inbound.protection.outlook.com
A81.19.159.14🇦🇹 IONOS-AS
PTRwww14sni.world4you.com

at

NSd.ns.at
NSj.ns.at
NSn.ns.at
NSr.ns.at
NSu.ns.at
NSns1.univie.ac.at
NSns2.univie.ac.at

Starts with same word

21er.com
21er.cn
21er.net
21er.at
21er.de
21er.org

Starts similarily

12re.net
12er.eu
12er.info
re21.it
12re.com
12er.org
21er.cn
er12.com
21er.net
re21.net
er21.com
12er.at
12er.net
r21e.net
21re.services
re21.com
21er.at
12er.dk
1er2.org
21re.de
1e2r.com
21er.de
21er.org
12er.de
r12e.com
21re.com
21er.com
re12.ru

AI analysis

21er.at points to a single IP: 81.19.159.14.

Other host names, for instance zone1.co.at, cloudblogger.at, plessl-med.at, girard.at and creativecontent.media share IP numbers with 21er.at.

21er.at's delegation is to two name servers ns1.world4you.at and ns2.world4you.at.

21er.at shares the same name server configuration as other domains, such as push-email.at, mworga.com, berndlorenz.com, azwei.at and leisch-kiesl.com.

Host names with two IP numbers: ns1.world4you.at points to 2607:f1c0:fe:53:185:132:32:253 and 185.132.32.253; ns2.world4you.at points to 2001:8d8:fe:53:217:160:82:253 and 217.160.82.253

21er.at is served by a single mail server, 21er-at.mail.protection.outlook.com.

The host name 21er-at.mail.protection.outlook.com resolves to eight IP numbers: 2a01:111:f403:ca04::4, 2a01:111:f403:ca04::8, 2a01:111:f403:ca04::a, 2a01:111:f403:ca09::a, 52.101.73.21, 52.101.73.22, 52.101.73.24 and 52.101.73.28.