4weeks.co - robtex.com

4weeks.co

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
A217.160.0.18🇩🇪 IONOS-AS217.160.0.0/16 IONOS-PA-3
NSns1033.ui-dns.biz ⭐
A2001:8d8:fe:53:0:d9a0:5121:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1033.ui-dns.biz
A217.160.81.33🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1033.ui-dns.biz
NSns1063.ui-dns.org
A2001:8d8:fe:53:0:d9a0:533f:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1063.ui-dns.org
A217.160.83.63🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1063.ui-dns.org
NSns1070.ui-dns.com
A2001:8d8:fe:53:0:d9a0:5246:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1070.ui-dns.com
A217.160.82.70🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1070.ui-dns.com
NSns1094.ui-dns.de
A2607:f1c0:fe:53:185:132:32:94🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRns1094.ui-dns.de
A217.160.80.94🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1094.ui-dns.de
MXaspmx.l.google.com ⭐
A2a00:1450:400c:c0b::1b🇧🇪 Google2a00:1450:400c::/48
PTRwa-in-f27.1e100.net
PTRwa-in-x1b.1e100.net
A172.217.76.27🇺🇸 Google172.217.76.0/24
PTRyulhrp-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c0f::1b🇨🇱 Google2800:3f0:4003::/48
A108.177.123.26🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1b🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f27.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.26🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:4025:c01::1a🇵🇱 Google2a00:1450:4025::/48
PTRrd-in-f26.1e100.net
A142.250.147.26🇺🇸 Google142.250.147.0/24
PTRrd-in-f26.1e100.net
TXTv=spf1 include:_spf.google.com ~all
TXTgoogle-site-verification=5itCF41--3VH2rLaSQ0GcOux3qH86h4B4236KYhvJFA
SOAns1033.ui-dns.bizhostmaster@1und1.com 2017-06-01 #27

co

DNSSEC🔒 Signed (DS record present)
NSns0.centralnic.net ⭐
NSa.registrydns.co
NSb.registrydns.co
NSc.registrydns.co
NSd.registrydns.co
SOAns0.centralnic.nethostmaster@centralnic.net serial=1759617366

Same first word

4weeks.com
4weeks.nl
4weeks.co
4weeks.ru
4weeks.dev

DNS History

11 records (11 active, 0 former)

NSns1033.ui-dns.bizns1063.ui-dns.orgns1070.ui-dns.comns1094.ui-dns.deMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA2001:8d8:100f:f000::200217.160.0.18
●NSns1033.ui-dns.biz2026-02-28 → 2026-03-24 · 2 obs
● 2026-02-28 16:13:28
● 2026-03-24 22:12:38
●NSns1063.ui-dns.org2026-02-28 → 2026-03-24 · 2 obs
● 2026-02-28 16:13:28
● 2026-03-24 22:12:38
●NSns1070.ui-dns.com2026-02-28 → 2026-03-24 · 2 obs
● 2026-02-28 16:13:28
● 2026-03-24 22:12:38
●NSns1094.ui-dns.de2026-02-28 → 2026-03-24 · 2 obs
● 2026-02-28 16:13:28
● 2026-03-24 22:12:38
●MXalt1.aspmx.l.google.com2026-02-28 → 2026-03-24 · 2 obs
● 2026-02-28 16:13:28
● 2026-03-24 22:12:38
●MXalt2.aspmx.l.google.com2026-02-28 → 2026-03-24 · 2 obs
● 2026-02-28 16:13:28
● 2026-03-24 22:12:38
●MXalt3.aspmx.l.google.com2026-02-28 → 2026-03-24 · 2 obs
● 2026-02-28 16:13:28
● 2026-03-24 22:12:38
●MXalt4.aspmx.l.google.com2026-02-28 → 2026-03-24 · 2 obs
● 2026-02-28 16:13:28
● 2026-03-24 22:12:38
●MXaspmx.l.google.com2026-02-28 → 2026-03-24 · 2 obs
● 2026-02-28 16:13:28
● 2026-03-24 22:12:38
●A2001:8d8:100f:f000::2002026-02-28 → 2026-03-24 · 2 obs
● 2026-02-28 16:13:28
● 2026-03-24 22:12:38
●A217.160.0.182026-02-28 → 2026-03-24 · 2 obs
● 2026-02-28 16:13:28
● 2026-03-24 22:12:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coa.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co-
4weeks.cons1033.ui-dns.biz, ns1063.ui-dns.org, ns1070.ui-dns.com, ns1094.ui-dns.de-

✅ Authoritative Response

Server:217.160.82.70

NS records: ns1033.ui-dns.biz, ns1063.ui-dns.org, ns1070.ui-dns.com, ns1094.ui-dns.de

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

Validation error at co: Error: DNS query timeout: 194.169.218.57 for DNSKEY co

⏱️ Timing

Total: 3427ms | Queries: -

📄 Records

TypeCountSample Data
A1217.160.0.18
AAAA12001:8d8:100f:f000::200
NS4ns1033.ui-dns.biz, ns1063.ui-dns.org...
MX5alt3.aspmx.l.google.com (pri: 10), alt4.aspmx.l.google.com (pri: 10)...
TXT2google-site-verification=5itCF41--3VH2rL, v=spf1 include:_spf.google.com ~all
SOA1ns1033.ui-dns.biz hostmaster.1und1.com

Analysis

IP Addresses

4weeks.co resolves to two IP numbers: 2001:8d8:100f:f000::200 and 217.160.0.18.

Other host names, for instance scananddonate.com, gioioso.de, automobile-schuster.de, balik.be and station-nullzwei.de share IP numbers with 4weeks.co.

Name Servers

4weeks.co's delegation is handled by four name servers: ns1033.ui-dns.biz, ns1070.ui-dns.com, ns1094.ui-dns.de and ns1063.ui-dns.org.

4weeks.co partially shares name servers with other domains; examples include hybridwerkzeug.com, audiosos.com, milch-maedchen.de, chamberfilterpress.net and ferienwohnungen-buesum-holm.de.

These name servers are commonly used alongside ns1033.ui-dns.com, ns1033.ui-dns.org, ns1033.ui-dns.de, ns1094.ui-dns.org, ns1094.ui-dns.biz, ns1094.ui-dns.com, ns1070.ui-dns.biz, ns1070.ui-dns.de, ns1070.ui-dns.org and ns1063.ui-dns.de.

Host names with two IPs:

ns1033.ui-dns.biz points to 2001:8d8:fe:53:0:d9a0:5121:100 and 217.160.81.33

ns1070.ui-dns.com points to 2001:8d8:fe:53:0:d9a0:5246:100 and 217.160.82.70

ns1094.ui-dns.de points to 2607:f1c0:fe:53:185:132:32:94 and 217.160.80.94

ns1063.ui-dns.org points to 2001:8d8:fe:53:0:d9a0:533f:100 and 217.160.83.63

Mail Servers

Five mail servers handle 4weeks.co: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

4weeks.co shares some mail servers with other domains, at least partially, such as remaker.jp, clickthenconvert.com, nashville49.org, ns500821.ns500821.ns500821.ns500841.ns500841.ns500821.ns500821.ns500795.ns500794.ns500821.ns500821.ns500790.ns500795.lustypartnersfinder.com and mansaali.com.

These mail servers are often used together with aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com points to: 2a00:1450:400c:c0b::1b and 172.217.76.27

alt1.aspmx.l.google.com points to: 2800:3f0:4003:c0f::1b and 108.177.123.26

alt2.aspmx.l.google.com points to: 2a00:1450:400b:c02::1b and 172.253.116.27

alt3.aspmx.l.google.com points to: 2a00:1450:4009:c0f::1a and 192.178.223.26

alt4.aspmx.l.google.com points to: 2a00:1450:4025:c01::1a and 142.250.147.26