`development.school`

DNSSEC	⚠️ Not signed
A	2607:f1c0:100f:f000::267^{🇺🇸 IONOS-AS2607:f1c0::/32 1&1 Internet Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
		PTR	`2607-f1c0-100f-f000-0000-0000-0000-0267.elastic-ssl.ui-r.com`
A	74.208.236.146^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
NS	`ns-us.1and1-dns.com` ⭐
		A	2001:8d8:fe:53:0:d9a0:5202:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns-us.1and1-dns.com`
		A	217.160.82.2^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns-us.1and1-dns.com`
NS	`ns-us.1and1-dns.de`
		A	2001:8d8:fe:53:0:d9a0:5002:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns-us.1and1-dns.de`
		A	217.160.80.2^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns-us.1and1-dns.de`
NS	`ns-us.1and1-dns.org`
		A	2001:8d8:fe:53:0:d9a0:5302:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns-us.1and1-dns.org`
		A	217.160.83.2^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns-us.1and1-dns.org`
NS	`ns-us.1and1-dns.us`
		A	2001:8d8:fe:53:0:d9a0:5102:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns-us.1and1-dns.us`
		A	217.160.81.2^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns-us.1and1-dns.us`
MX	`mx00.ionos.com` ⭐
		A	74.208.5.3^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx00.perfora.net`
MX	`mx01.ionos.com` ⭐
		A	74.208.5.21^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx01.perfora.net`
TXT	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	`ns-us.1and1-dns.com`hostmaster@1and1.com 2017-04-11 #4

`school`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.school` ⭐
	NS	`v0n1.nic.school`
	NS	`v0n2.nic.school`
	NS	`v0n3.nic.school`
	NS	`v2n0.nic.school`
	NS	`v2n1.nic.school`
	SOA	`v0n0.nic.school`hostmaster@donuts.email serial=1776966106

Same first word

development.support

development.ge

development.com

development.es

development.sy

development.s3.amazonaws.com

development.co.il

development.boutique

development.app

development.pro

development.vip

development.gold

development.lt

development.coach

development.guide

development.company

development.org.sg

development.am

development.be

development.cl

development.ws

development.co.za

development.gr

development.jp

development.org

development.no

development.by

development.lv

development.fund

development.capetown

development.me

development.org.uk

development.world

development.com.pl

development.school

development.kiev.ua

development.tas.gov.au

development.co.kr

development.or.jp

development.zone

development.at

development.az

development.coop

development.pl

development.dev

development.asia

development.net

development.awsapps.com

development.de

development.education

development.services

development.agency

development.red

development.tv

development.xyz

development.co.at

development.uk

development.training

development.pm

development.md

development.guru

development.plus

development.tips

development.wtf

development.hu

development.co.uk

development.com.au

development.limited

DNS History

14 records (8 active, 6 former)

●NSns-us.1and1-dns.com2016-12-10 → 2026-04-23 · 2 obs

● 2016-12-10 20:53:48
● 2026-04-23 17:53:42

●NSns-us.1and1-dns.de2016-12-10 → 2026-04-23 · 2 obs

● 2016-12-10 20:53:48
● 2026-04-23 17:53:42

●NSns-us.1and1-dns.org2016-12-10 → 2026-04-23 · 2 obs

● 2016-12-10 20:53:48
● 2026-04-23 17:53:42

●NSns-us.1and1-dns.us2016-12-10 → 2026-04-23 · 2 obs

● 2016-12-10 20:53:48
● 2026-04-23 17:53:42

○MXmx00.1and1.com2016-12-10 → 2017-09-04 · 4 obs

● 2016-12-10 20:53:48
● 2017-09-04 08:08:58
○ 2026-02-18 00:06:34
○ 2026-04-23 17:53:42

●MXmx00.ionos.com2026-02-18 → 2026-04-23 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-04-23 17:53:42

○MXmx01.1and1.com2016-12-10 → 2017-09-04 · 4 obs

● 2016-12-10 20:53:48
● 2017-09-04 08:08:58
○ 2026-02-18 00:06:34
○ 2026-04-23 17:53:42

●MXmx01.ionos.com2026-02-18 → 2026-04-23 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-04-23 17:53:42

○A192.195.77.1552016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:53:48
○ 2017-09-04 08:08:58
○ 2026-04-23 17:53:42

○A216.250.120.632017-09-04 → 2017-09-04 · 4 obs

○ 2016-12-10 20:53:48
● 2017-09-04 08:08:58
○ 2026-02-18 00:06:34
○ 2026-04-23 17:53:42

○A2607:f1c0:1000:6077:580a:9d24:8c53:68122016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:53:48
○ 2017-09-04 08:08:58
○ 2026-04-23 17:53:42

○A2607:f1c0:1000:7075:87d5:f6c4:4168:88312017-09-04 → 2017-09-04 · 4 obs

○ 2016-12-10 20:53:48
● 2017-09-04 08:08:58
○ 2026-02-18 00:06:34
○ 2026-04-23 17:53:42

●A2607:f1c0:100f:f000::2672026-02-18 → 2026-04-23 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-04-23 17:53:42

●A74.208.236.1462026-02-18 → 2026-04-23 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-04-23 17:53:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
school	v0n0.nic.school, v0n1.nic.school, v0n2.nic.school, v0n3.nic.school...	12 records
development.school	ns-us.1and1-dns.us, ns-us.1and1-dns.com, ns-us.1and1-dns.de, ns-us.1and1-dns.org	-

✅ Authoritative Response

Server:217.160.82.2

NS records: ns-us.1and1-dns.us, ns-us.1and1-dns.com, ns-us.1and1-dns.de, ns-us.1and1-dns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for development.school (unsigned zone)

⏱️ Timing

Total: 628ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`74.208.236.146`
AAAA	1	`2607:f1c0:100f:f000::267`
NS	4	`ns-us.1and1-dns.us, ns-us.1and1-dns.com...`
MX	2	`mx00.ionos.com (pri: 10), mx01.ionos.com (pri: 10)`
TXT	1	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	1	`ns-us.1and1-dns.com hostmaster.1and1.com`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.school, v0n0.nic.school, v0n1.nic.school...)

Analysis

IP Addresses

The entity development.school points to two IP numbers: 2607:f1c0:100f:f000::267 and 74.208.236.146.

For instance, other host names happyhourdeliveries.com, bitterpenpress.com, sheely-pants-live.online, thefishoffice.com and appleiphoneschool.com share IP numbers with development.school.

Name Servers

development.school is delegated to four name servers: ns-us.1and1-dns.com, ns-us.1and1-dns.de, ns-us.1and1-dns.org and ns-us.1and1-dns.us.

development.school shares name servers with other domains at least partially, for example biz-mark.com, pokemonpro.com, arslans.com, variluxcinefrances.com and t-mobilearena.co.

These name servers are often used together with the name servers ns51.1and1.com, ns52.1and1.com, ns1045.ui-dns.com, ns1045.ui-dns.org and ns1045.ui-dns.biz.

Host names with two IP numbers:

ns-us.1and1-dns.com points to: 2001:8d8:fe:53:0:d9a0:5202:100 and 217.160.82.2

ns-us.1and1-dns.de points to: 2001:8d8:fe:53:0:d9a0:5002:100 and 217.160.80.2

ns-us.1and1-dns.org points to: 2001:8d8:fe:53:0:d9a0:5302:100 and 217.160.83.2

ns-us.1and1-dns.us points to: 2001:8d8:fe:53:0:d9a0:5102:100 and 217.160.81.2

Mail Servers

Two mail servers mx00.ionos.com and mx01.ionos.com handle development.school.

development.school shares the same mail server setup as other domains, for instance film2u.com, ndtdirect.com, nraco.us, hstopsed.com and rainatingey.com.

Host names with one IP number:

mx00.ionos.com points to: 74.208.5.3.

mx01.ionos.com points to: 74.208.5.21.

development.school - robtex.com