grothoff.com - robtex.com

grothoff.com

DNSSEC⚠️ Not signed
NSns1100.ui-dns.org ⭐
A2001:8d8:fe:53:0:d9a0:5364:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1100.ui-dns.org
A217.160.83.100🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1100.ui-dns.org
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
NSns1100.ui-dns.com
A2001:8d8:fe:53:0:d9a0:5264:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1100.ui-dns.com
A217.160.82.100🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1100.ui-dns.com
NSns1100.ui-dns.de
A2607:f1c0:fe:53:185:132:32:100🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRns1100.ui-dns.de
A185.132.32.100🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRns1100.ui-dns.de
A217.160.80.100🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1100.ui-dns.de
MXmx00.ionos.de ⭐
A212.227.15.41🇩🇪 IONOS-AS212.227.0.0/16 IONOS-PA-2
PTRmx00.kundenserver.de
MXmx01.ionos.de ⭐
A217.72.192.67🇩🇪 IONOS-AS217.72.192.0/20 Web.de
PTRmx01.kundenserver.de
TXTv=spf1 include:_spf-eu.ionos.com ~all
SOAns1100.ui-dns.orghostmaster@1und1.de 2016-08-11 #17

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1776251812
WOT: SAFE (61/100)

Same first word

grothoff.com
grothoff.org
grothoff.de

DNS History

12 records (6 active, 6 former)

200920112013201520172019202120232025NSns1100.ui-dns.bizns1100.ui-dns.comns1100.ui-dns.dens1100.ui-dns.orgns39.1und1.dens40.1und1.deMXmx00.ionos.demx01.ionos.demx00.kundenserver.demx01.kundenserver.deA217.160.0.6882.165.80.225
●NSns1100.ui-dns.biz2026-04-04 → 2026-04-15 · 3 obs
○ 2017-01-10 01:49:16
● 2026-04-04 12:27:44
● 2026-04-15 11:43:16
●NSns1100.ui-dns.com2026-04-04 → 2026-04-15 · 3 obs
○ 2017-01-10 01:49:16
● 2026-04-04 12:27:44
● 2026-04-15 11:43:16
●NSns1100.ui-dns.de2026-04-04 → 2026-04-15 · 3 obs
○ 2017-01-10 01:49:16
● 2026-04-04 12:27:44
● 2026-04-15 11:43:16
●NSns1100.ui-dns.org2026-04-04 → 2026-04-15 · 3 obs
○ 2017-01-10 01:49:16
● 2026-04-04 12:27:44
● 2026-04-15 11:43:16
○NSns39.1und1.de2015-05-16 → 2017-01-10 · 5 obs
○ 2008-03-20 13:04:34
● 2015-05-16 08:18:46
● 2017-01-10 01:49:16
○ 2026-04-04 12:27:44
○ 2026-04-15 11:43:16
○NSns40.1und1.de2015-05-16 → 2017-01-10 · 5 obs
○ 2008-03-20 13:04:34
● 2015-05-16 08:18:46
● 2017-01-10 01:49:16
○ 2026-04-04 12:27:44
○ 2026-04-15 11:43:16
●MXmx00.ionos.de2026-04-04 → 2026-04-15 · 3 obs
○ 2017-01-10 01:49:16
● 2026-04-04 12:27:44
● 2026-04-15 11:43:16
○MXmx00.kundenserver.de2015-05-16 → 2017-01-10 · 5 obs
○ 2008-03-20 13:04:34
● 2015-05-16 08:18:46
● 2017-01-10 01:49:16
○ 2026-04-04 12:27:44
○ 2026-04-15 11:43:16
●MXmx01.ionos.de2026-04-04 → 2026-04-15 · 3 obs
○ 2017-01-10 01:49:16
● 2026-04-04 12:27:44
● 2026-04-15 11:43:16
○MXmx01.kundenserver.de2015-05-16 → 2017-01-10 · 5 obs
○ 2008-03-20 13:04:34
● 2015-05-16 08:18:46
● 2017-01-10 01:49:16
○ 2026-04-04 12:27:44
○ 2026-04-15 11:43:16
○A217.160.0.682017-01-10 → 2017-01-10 · 4 obs
○ 2016-04-24 01:17:34
● 2017-01-10 01:49:16
○ 2026-04-04 12:27:44
○ 2026-04-15 11:43:16
○A82.165.80.2252015-05-16 → 2016-04-24 · 5 obs
○ 2008-03-20 13:04:34
● 2015-05-16 08:18:46
● 2016-04-24 01:17:34
○ 2017-01-10 01:49:16
○ 2026-04-15 11:43:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comj.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net...-
grothoff.comns1100.ui-dns.de, ns1100.ui-dns.biz, ns1100.ui-dns.org, ns1100.ui-dns.com2 records

✅ Authoritative Response

Server:217.160.81.100

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for grothoff.com (unsigned zone)

⏱️ Timing

Total: 506ms | Queries: -

📄 Records

TypeCountSample Data
NS4ns1100.ui-dns.org, ns1100.ui-dns.com...
MX2mx00.ionos.de (pri: 10), mx01.ionos.de (pri: 10)
TXT1v=spf1 include:_spf-eu.ionos.com ~all
SOA1ns1100.ui-dns.org hostmaster.1und1.de

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1100.ui-dns.com, ns1100.ui-dns.com)

Analysis

Name Servers

grothoff.com delegates to four name servers: ns1100.ui-dns.biz, ns1100.ui-dns.com, ns1100.ui-dns.de and ns1100.ui-dns.org.

grothoff.com at least partially shares name servers with other domains, for instance lifebymeshelle.com, cigservice.tv, asseburg-software.de, peltiershop.de and collectivedance.co.uk.

These name servers are commonly used with ns1122.ui-dns.biz, ns1085.ui-dns.com, ns1016.ui-dns.org, ns1103.ui-dns.com, ns1125.ui-dns.de, ns1018.ui-dns.de, ns1067.ui-dns.com, ns1049.ui-dns.org and ns1047.ui-dns.com.

Host names by IP count:

Three IP numbers:

The host name ns1100.ui-dns.de points to: 2607:f1c0:fe:53:185:132:32:100, 185.132.32.100 and 217.160.80.100.

Two IP numbers:

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

The host name ns1100.ui-dns.com points to: 2001:8d8:fe:53:0:d9a0:5264:100 and 217.160.82.100.

The host name ns1100.ui-dns.org points to: 2001:8d8:fe:53:0:d9a0:5364:100 and 217.160.83.100.

Mail Servers

grothoff.com is handled by two mail servers: mx00.ionos.de and mx01.ionos.de.

grothoff.com uses the same mail server setup as other domains, for instance demographicchange.eu, aids-hilfe-offenburg.de, awniemeyer.at, land-des-friedens.de and aussenborder.net.

Host names with one IP:

mx00.ionos.de points to: 212.227.15.41

mx01.ionos.de points to: 217.72.192.67