citystudygroup.com - robtex.com

citystudygroup.com

DNSSEC⚠️ Not signed
A2a07:7800::172🇬🇧 TWENTYI2a07:7800::/48
A185.151.30.172🇬🇧 TWENTYI185.151.30.0/24
NSns1.stackdns.com ⭐
A35.197.225.59🇬🇧 Google35.197.224.0/20
PTR59.225.197.35.bc.googleusercontent.com
NSns2.stackdns.com
A146.148.28.88🇧🇪 Google146.148.16.0/20
PTR88.28.148.146.bc.googleusercontent.com
NSns3.stackdns.com
A35.198.79.191🇩🇪 Google35.198.64.0/20
PTR191.79.198.35.bc.googleusercontent.com
NSns4.stackdns.com
A104.196.137.209🇺🇸 Google104.196.128.0/20
PTR209.137.196.104.bc.googleusercontent.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4023:c0b::1a🇺🇸 Google2607:f8b0::/32
PTRdd-in-f26.1e100.net
A142.250.141.27🇺🇸 Google142.250.141.0/24
PTRdd-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2a00:1450:4025:402::1a🇳🇱 Google2a00:1450:4025::/48
PTRrb-in-f26.1e100.net
A142.250.102.27🇺🇸 Google142.250.102.0/24
PTRrb-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.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)
A2607:f8b0:4001:c70::1b🇺🇸 Google2607:f8b0:4001::/48
PTRyucbful-in-f27.1e100.net
A192.178.209.26🇺🇸 Google192.178.209.0/24
PTRyucbful-in-f26.1e100.net
TXTgoogle-site-verification=s2TFuOnBCv1fVtuc4V_7QNuxckLR5QUjHnLRy0LVZxw
TXTv=spf1 include:_spf.google.com include:spf.stackmail.com -all
SOAns1.stackdns.comhostmaster@stackdns.com serial=1684246978

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=1778347571

Same first word

citystudygroup.com

DNS History

16 records (11 active, 5 former)

20162017201820192020202120222023202420252026NSns1.stackdns.comns2.stackdns.comns3.stackdns.comns4.stackdns.comns183.websitewelcome.comns184.websitewelcome.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA185.151.30.1722a07:7800::172192.185.103.198
●NSns1.stackdns.com2026-05-09 → 2026-05-09 · 2 obs
○ 2017-06-06 13:31:34
● 2026-05-09 17:51:12
○NSns183.websitewelcome.com2015-06-07 → 2017-06-06 · 3 obs
● 2015-06-07 10:20:34
● 2017-06-06 13:31:34
○ 2026-05-09 17:51:12
○NSns184.websitewelcome.com2015-06-07 → 2017-06-06 · 3 obs
● 2015-06-07 10:20:34
● 2017-06-06 13:31:34
○ 2026-05-09 17:51:12
●NSns2.stackdns.com2026-05-09 → 2026-05-09 · 2 obs
○ 2017-06-06 13:31:34
● 2026-05-09 17:51:12
●NSns3.stackdns.com2026-05-09 → 2026-05-09 · 2 obs
○ 2017-06-06 13:31:34
● 2026-05-09 17:51:12
●NSns4.stackdns.com2026-05-09 → 2026-05-09 · 2 obs
○ 2017-06-06 13:31:34
● 2026-05-09 17:51:12
●MXalt1.aspmx.l.google.com2015-06-07 → 2026-05-09 · 2 obs
● 2015-06-07 10:20:34
● 2026-05-09 17:51:12
●MXalt2.aspmx.l.google.com2015-06-07 → 2026-05-09 · 2 obs
● 2015-06-07 10:20:34
● 2026-05-09 17:51:12
●MXalt3.aspmx.l.google.com2026-05-09 → 2026-05-09 · 2 obs
○ 2017-06-06 13:31:34
● 2026-05-09 17:51:12
●MXalt4.aspmx.l.google.com2026-05-09 → 2026-05-09 · 2 obs
○ 2017-06-06 13:31:34
● 2026-05-09 17:51:12
●MXaspmx.l.google.com2015-06-07 → 2026-05-09 · 2 obs
● 2015-06-07 10:20:34
● 2026-05-09 17:51:12
○MXaspmx2.googlemail.com2015-06-07 → 2017-06-06 · 3 obs
● 2015-06-07 10:20:34
● 2017-06-06 13:31:34
○ 2026-05-09 17:51:12
○MXaspmx3.googlemail.com2015-06-07 → 2017-06-06 · 3 obs
● 2015-06-07 10:20:34
● 2017-06-06 13:31:34
○ 2026-05-09 17:51:12
●A185.151.30.1722026-05-09 → 2026-05-09 · 2 obs
○ 2017-06-06 13:31:34
● 2026-05-09 17:51:12
○A192.185.103.1982015-06-07 → 2017-06-06 · 3 obs
● 2015-06-07 10:20:34
● 2017-06-06 13:31:34
○ 2026-05-09 17:51:12
●A2a07:7800::1722026-05-09 → 2026-05-09 · 2 obs
○ 2017-06-06 13:31:34
● 2026-05-09 17:51:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comj.gtld-servers.net, l.gtld-servers.net, f.gtld-servers.net, c.gtld-servers.net...-
citystudygroup.comns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com, ns4.stackdns.com4 records

✅ Authoritative Response

Server:35.198.79.191

NS records: ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com, ns4.stackdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for citystudygroup.com (unsigned zone)

⏱️ Timing

Total: 461ms | Queries: -

📄 Records

TypeCountSample Data
A1185.151.30.172
AAAA12a07:7800::172
NS4ns4.stackdns.com, ns2.stackdns.com...
MX5ALT1.ASPMX.L.GOOGLE.com (pri: 5), ASPMX.L.GOOGLE.com (pri: 1)...
TXT2v=spf1 include:_spf.google.com include:s, google-site-verification=s2TFuOnBCv1fVtu
SOA1ns1.stackdns.com hostmaster.stackdns.com

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com...)

Analysis

IP Addresses

citystudygroup.com points to two IPs: 2a07:7800::172 and 185.151.30.172.

Other host names including nshc.co.uk, ns1astran.level-cloud.com, emporium-hungerford.co.uk, watsons-ea.co.uk and totally4bikers.com share IP numbers with citystudygroup.com.

Name Servers

citystudygroup.com is delegated to four name servers: ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com and ns4.stackdns.com.

citystudygroup.com at least partially shares name servers with other domains, including pressrecognitionpanel.org.uk, abbascombe.co.uk, isd-tech.com, lanesschoolofmotoring.co.uk and jacquiporter.co.uk.

Hostnames with a single IP:

ns1.stackdns.com points to 35.197.225.59

ns2.stackdns.com points to 146.148.28.88

ns3.stackdns.com points to 35.198.79.191

ns4.stackdns.com points to 104.196.137.209

Mail Servers

citystudygroup.com is handled by five mail servers: 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.

The mail servers for citystudygroup.com are shared with other domains, for instance arepederjohnsrud.com, matoushoracek.cz, rakosell.com, ns500768.ns500758.ns500759.ns500698.ns500758.ns500759.ns500698.ns500698.ns500735.ns500698.ns500708.ns500576.ns500576.ns500619.ns500652.trackreceptor.com and ns500724.ns500599.ns500737.ns500599.ns500737.ns500599.ns500724.ns500724.ns500599.ns500724.ns500724.ns500724.ns500724.ns500599.ns500583.ns500583.yummyflingsfinder.com.

These mail servers are commonly used alongside aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com points to 2607:f8b0:4023:c0b::1a and 142.250.141.27.

alt1.aspmx.l.google.com points to 2a00:1450:4025:402::1a and 142.250.102.27.

alt2.aspmx.l.google.com points to 2a00:1450:400b:c02::1a 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 2607:f8b0:4001:c70::1b and 192.178.209.26.