teachprep.org - robtex.com

teachprep.org

DNSSEC⚠️ Not signed
A2001:8d8:100f:f000::200🇩🇪 IONOS-AS2001:8d8::/32 DE-IONOS-20020910
PTR2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com
A217.160.0.229🇩🇪 IONOS-AS217.160.0.0/16 IONOS-PA-3
NSns1100.ui-dns.biz ⭐
A2001:8d8:fe:53:0:d9a0:5164:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1100.ui-dns.biz
A217.160.81.100🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1100.ui-dns.biz
NSns1023.ui-dns.de
A2001:8d8:fe:53:0:d9a0:5017:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1023.ui-dns.de
A217.160.80.23🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1023.ui-dns.de
NSns1067.ui-dns.com
A2001:8d8:fe:53:0:d9a0:5243:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1067.ui-dns.com
A217.160.82.67🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1067.ui-dns.com
NSns1082.ui-dns.org
A2001:8d8:fe:53:0:d9a0:5352:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1082.ui-dns.org
A217.160.83.82🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1082.ui-dns.org
MXmx00.ionos.com ⭐
A74.208.5.3🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.
PTRmx00.perfora.net
MXmx01.ionos.com ⭐
A74.208.5.21🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.
PTRmx01.perfora.net
TXTv=spf1 include:_spf-us.ionos.com ~all
TXTgoogle-site-verification=n0GivHC9A_cmTVZ03eBui2bdkFw11qrYAt5Dkrs-cCo
SOAns1100.ui-dns.bizhostmaster@1und1.com 2017-06-01 #19

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1775128330

Same first word

teachprep.org

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DNS History

8 records (8 active, 0 former)

NSns1023.ui-dns.dens1067.ui-dns.comns1082.ui-dns.orgns1100.ui-dns.bizMXmx00.ionos.commx01.ionos.comA2001:8d8:100f:f000::200217.160.0.229
●NSns1023.ui-dns.de2026-03-14 → 2026-04-02 · 2 obs
● 2026-03-14 21:40:58
● 2026-04-02 11:38:14
●NSns1067.ui-dns.com2026-03-14 → 2026-04-02 · 2 obs
● 2026-03-14 21:40:58
● 2026-04-02 11:38:14
●NSns1082.ui-dns.org2026-03-14 → 2026-04-02 · 2 obs
● 2026-03-14 21:40:58
● 2026-04-02 11:38:14
●NSns1100.ui-dns.biz2026-03-14 → 2026-04-02 · 2 obs
● 2026-03-14 21:40:58
● 2026-04-02 11:38:14
●MXmx00.ionos.com2026-03-14 → 2026-04-02 · 2 obs
● 2026-03-14 21:40:58
● 2026-04-02 11:38:14
●MXmx01.ionos.com2026-03-14 → 2026-04-02 · 2 obs
● 2026-03-14 21:40:58
● 2026-04-02 11:38:14
●A2001:8d8:100f:f000::2002026-03-14 → 2026-04-02 · 2 obs
● 2026-03-14 21:40:58
● 2026-04-02 11:38:14
●A217.160.0.2292026-03-14 → 2026-04-02 · 2 obs
● 2026-03-14 21:40:58
● 2026-04-02 11:38:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org-
teachprep.orgns1100.ui-dns.biz, ns1067.ui-dns.com, ns1082.ui-dns.org, ns1023.ui-dns.de2 records

✅ Authoritative Response

Server:217.160.80.23

NS records: ns1100.ui-dns.biz, ns1067.ui-dns.com, ns1082.ui-dns.org, ns1023.ui-dns.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for teachprep.org (unsigned zone)

⏱️ Timing

Total: 582ms | Queries: -

📄 Records

TypeCountSample Data
A1217.160.0.229
AAAA12001:8d8:100f:f000::200
NS4ns1100.ui-dns.biz, ns1082.ui-dns.org...
MX2mx00.ionos.com (pri: 10), mx01.ionos.com (pri: 10)
TXT2v=spf1 include:_spf-us.ionos.com ~all, google-site-verification=n0GivHC9A_cmTVZ
SOA1ns1100.ui-dns.biz hostmaster.1und1.com

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1082.ui-dns.org, ns1082.ui-dns.org)

Analysis

IP Addresses

teachprep.org resolves to two IP numbers: 2001:8d8:100f:f000::200 and 217.160.0.229.

Other host names, for instance parketfabriek.be, golflogoball.de, ha-enterprise.com, screen-service.com and brinis.de share IP numbers with teachprep.org.

Name Servers

teachprep.org is delegated to four name servers: ns1100.ui-dns.biz, ns1067.ui-dns.com, ns1023.ui-dns.de and ns1082.ui-dns.org.

teachprep.org shares some name servers with other domains, for example lcc-travelservice.de, pizzerialatrattoria.com, cretadoro.com, zahnatorium.de and kmo24.de.

these name servers are often used with ns1023.ui-dns.biz, ns1100.ui-dns.org, ns1100.ui-dns.de, ns1100.ui-dns.com, ns1023.ui-dns.org, ns1023.ui-dns.com, ns1082.ui-dns.biz, ns1082.ui-dns.com, ns1082.ui-dns.de and ns1067.ui-dns.org.

Host names with two IP numbers

Two IPs per host:

ns1100.ui-dns.biz points to 2001:8d8:fe:53:0:d9a0:5164:100 and 217.160.81.100

ns1067.ui-dns.com points to 2001:8d8:fe:53:0:d9a0:5243:100 and 217.160.82.67

ns1023.ui-dns.de points to 2001:8d8:fe:53:0:d9a0:5017:100 and 217.160.80.23

ns1082.ui-dns.org points to 2001:8d8:fe:53:0:d9a0:5352:100 and 217.160.83.82

Mail Servers

teachprep.org is served by two mail servers: mx00.ionos.com and mx01.ionos.com.

teachprep.org shares the mail server setup with other domains, for example pavirtual.com, urbanreferee.com, clubkickass.com, casaverde.us and (0x787878)themepark.com.

teachprep.org shares some mail servers with other domains at least partially, for instance mx.fileconvoy.com and paxtonre.com.

Host names with a single IP:

mx00.ionos.com points to 74.208.5.3

mx01.ionos.com points to 74.208.5.21