development.school - dns.ninja

`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=1781509046

Same first word

development.support

development.ge

development.com

development.es

development.istanbul

development.sy

development.s3.amazonaws.com

development.co.il

development.boutique

development.app

development.pro

development.spdns.de

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.golf

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.run

development.training

development.pm

development.md

development.guru

development.li

development.plus

development.tips

development.wtf

development.hu

development.co.uk

development.com.au

development.id

development.limited

DNS History

14 records (8 active, 6 former)

●NSns-us.1and1-dns.com2016-12-10 → 2026-06-15 · 2 obs

● 2016-12-10 20:53:48
● 2026-06-15 08:23:16

●NSns-us.1and1-dns.de2016-12-10 → 2026-06-15 · 2 obs

● 2016-12-10 20:53:48
● 2026-06-15 08:23:16

●NSns-us.1and1-dns.org2016-12-10 → 2026-06-15 · 2 obs

● 2016-12-10 20:53:48
● 2026-06-15 08:23:16

●NSns-us.1and1-dns.us2016-12-10 → 2026-06-15 · 2 obs

● 2016-12-10 20:53:48
● 2026-06-15 08:23:16

○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
○ 2026-06-15 08:23:16

●MXmx00.ionos.com2026-02-18 → 2026-06-15 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-06-15 08:23:16

○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
○ 2026-06-15 08:23:16

●MXmx01.ionos.com2026-02-18 → 2026-06-15 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-06-15 08:23:16

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

● 2016-12-10 20:53:48
○ 2017-09-04 08:08:58
○ 2026-06-15 08:23:16

○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
○ 2026-06-15 08:23:16

○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
○ 2026-06-15 08:23:16

○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
○ 2026-06-15 08:23:16

●A2607:f1c0:100f:f000::2672026-02-18 → 2026-06-15 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-06-15 08:23:16

●A74.208.236.1462026-02-18 → 2026-06-15 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-06-15 08:23:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
school	v2n0.nic.school, v0n2.nic.school, v0n0.nic.school, v0n3.nic.school...	-
development.school	ns-us.1and1-dns.com, ns-us.1and1-dns.org, ns-us.1and1-dns.de, ns-us.1and1-dns.us	-

✅ Authoritative Response

Server:217.160.81.2

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for development.school (unsigned zone)

⏱️ Timing

Total: 1341ms | 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.de, 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`

Analysis

IP Addresses

development.school directs to two IP numbers, 74.208.236.146 and 2607:f1c0:100f:f000::267

Additional host names — happyhourdeliveries.com, bitterpenpress.com, thefishoffice.com and two others — share IP numbers with development.school.

Name Servers

development.school has four authoritative 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 partially shares its NS delegation with several other domains, including biz-mark.com, pokemonpro.com, arslans.com and two others.

The name servers ns57.1and1.com, ns58.1and1.com, ns51.1and1.com and ns52.1and1.com are often found in use alongside these name servers.

ns-us.1and1-dns.com, ns-us.1and1-dns.de, ns-us.1and1-dns.org and ns-us.1and1-dns.us each carry two IP addresses. ns-us.1and1-dns.com has 217.160.82.2 and 2001:8d8:fe:53:0:d9a0:5202:100; ns-us.1and1-dns.de has 217.160.80.2 and 2001:8d8:fe:53:0:d9a0:5002:100; ns-us.1and1-dns.org has 217.160.83.2 and 2001:8d8:fe:53:0:d9a0:5302:100; ns-us.1and1-dns.us has 217.160.81.2 and 2001:8d8:fe:53:0:d9a0:5102:100.

Mail Servers

development.school has two mail servers: mx00.ionos.com and mx01.ionos.com.

development.school shares the same mail server setup as other domains, including film2u.com, ndtdirect.com, nraco.us and two others.

mx00.ionos.com resolves to 74.208.5.3. mx01.ionos.com resolves to 74.208.5.21. Both host names point to a single IP number.