`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	2607:f1c0:fe:53:185:132:32:2^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns-us.1and1-dns.de`
		A	185.132.32.2^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			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=1783824396

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.rest

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 → 2026-07-12 · 2 obs

● 2016-12-10 20:53:48
● 2026-07-12 03:32:34

●NSns-us.1and1-dns.de2016-12-10 → 2026-07-12 · 2 obs

● 2016-12-10 20:53:48
● 2026-07-12 03:32:34

●NSns-us.1and1-dns.org2016-12-10 → 2026-07-12 · 2 obs

● 2016-12-10 20:53:48
● 2026-07-12 03:32:34

●NSns-us.1and1-dns.us2016-12-10 → 2026-07-12 · 2 obs

● 2016-12-10 20:53:48
● 2026-07-12 03:32:34

○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
○ 2026-07-12 03:32:34

●MXmx00.ionos.com2026-02-18 → 2026-07-12 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-07-12 03:32:34

○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
○ 2026-07-12 03:32:34

●MXmx01.ionos.com2026-02-18 → 2026-07-12 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-07-12 03:32:34

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

● 2016-12-10 20:53:48
○ 2017-09-04 08:08:58
○ 2026-07-12 03:32:34

○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
○ 2026-07-12 03:32:34

○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
○ 2026-07-12 03:32:34

○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
○ 2026-07-12 03:32:34

●A2607:f1c0:100f:f000::2672026-02-18 → 2026-07-12 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-07-12 03:32:34

●A74.208.236.1462026-02-18 → 2026-07-12 · 3 obs

○ 2017-09-04 08:08:58
● 2026-02-18 00:06:34
● 2026-07-12 03:32:34

🔍 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.com, ns-us.1and1-dns.org, ns-us.1and1-dns.de, ns-us.1and1-dns.us	-

✅ Authoritative Response

Server:185.132.32.2

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: 1098ms | 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, v0n1.nic.school, v0n2.nic.school...)

Analysis

IP Addresses

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

Two other host names, along with happyhourdeliveries.com, bitterpenpress.com and thefishoffice.com, also share IP numbers with development.school.

Name Servers

The NS records for development.school point 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 at least some of its name servers with other domains, including biz-mark.com, pokemonpro.com, arslans.com and two others.

These name servers are frequently seen alongside ns57.1and1.com, ns58.1and1.com, ns51.1and1.com and 3 other name servers.

The host names ns-us.1and1-dns.com, ns-us.1and1-dns.de, ns-us.1and1-dns.org and ns-us.1and1-dns.us each resolve to two IP addresses: ns-us.1and1-dns.com resolves to 217.160.82.2 and 2001:8d8:fe:53:0:d9a0:5202:100; ns-us.1and1-dns.de resolves to 185.132.32.2 and 2607:f1c0:fe:53:185:132:32:2; ns-us.1and1-dns.org resolves to 217.160.83.2 and 2001:8d8:fe:53:0:d9a0:5302:100; ns-us.1and1-dns.us resolves to 217.160.81.2 and 2001:8d8:fe:53:0:d9a0:5102:100.

Mail Servers

development.school is served by two mail servers, mx00.ionos.com and mx01.ionos.com.

Among the domains sharing a mail server setup with development.school are film2u.com, ndtdirect.com, nraco.us and two others.

mx00.ionos.com and mx01.ionos.com each resolve to one IP number: mx00.ionos.com points to 74.208.5.3 and mx01.ionos.com points to 74.208.5.21.

development.school - robtex.com