`optimum.engineering`

DNSSEC	🔒 Signed (DS record present)
A	81.19.154.98^{🇦🇹 IONOS-AS81.19.144.0/20 World4You.com}
		PTR	`redirect01.world4you.com`
NS	`ns1.world4you.at` ⭐
		A	2607:f1c0:fe:53:185:132:32:253^{🇺🇸 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	`ns1.world4you.at`
		A	185.132.32.253^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns1.world4you.at`
NS	`ns2.world4you.at`
		A	2001:8d8:fe:53:217:160:82:253^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns2.world4you.at`
		A	217.160.82.253^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns2.world4you.at`
MX	`optimum-engineering.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::7^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00307.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::4^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am0pr04cu00504.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::d^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as9pr05cu01305.inbound.protection.outlook.com`
		A	52.101.68.16^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db4pr02cu00400.inbound.protection.outlook.com`
		A	52.101.68.36^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db5pr02cu00104.inbound.protection.outlook.com`
		A	52.101.73.4^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr83cu00404.inbound.protection.outlook.com`
		A	52.101.73.28^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am7pr05cu00204.inbound.protection.outlook.com`
MX	`mail.optimum.engineering`⁽¹⁰⁾
		A	81.19.149.89^{🇦🇹 IONOS-AS81.19.144.0/20 World4You.com}
			PTR	`mail34.world4you.com`
TXT	`MS=ms67035613`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
SOA	`ns1.world4you.at`hostmaster@world4you.com 2025-03-26 #3

`engineering`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.engineering` ⭐
	NS	`v0n1.nic.engineering`
	NS	`v0n2.nic.engineering`
	NS	`v0n3.nic.engineering`
	NS	`v2n0.nic.engineering`
	NS	`v2n1.nic.engineering`
	SOA	`v0n0.nic.engineering`hostmaster@donuts.email serial=1778342647

Subdomains

mail.optimum.engineering

Same first word

optimum.engineering

optimum.at

optimum.co.uk

optimum.mobi

optimum.financial

optimum.co.at

optimum.com.tr

optimum.ee

optimum.media

optimum.edu.pl

optimum.az

optimum.nu

optimum.energy

optimum.solutions

optimum.am

optimum.li

optimum.org

optimum.name

optimum.icu

optimum.rs

optimum.info

optimum.in.ua

optimum.finance

optimum.vn

optimum.io

optimum.net

optimum.pro

optimum.bet

optimum.co.il

optimum.la

optimum.me

optimum.com.pl

optimum.com.ua

optimum.net.au

optimum.pl

optimum.ba

optimum.net.ua

optimum.tel

optimum.com

optimum.fr

optimum.no

optimum.management

optimum.us

optimum.coach

optimum.bg

optimum.digital

optimum.com.pk

optimum.nl

optimum.by

optimum.lol

optimum.co.za

optimum.life

optimum.ca

optimum.ch

optimum.wroclaw.pl

optimum.loans

optimum.koeln

optimum.biz

optimum.furniture

optimum.lv

optimum.blog

optimum.credit

optimum.zone

optimum.lu

optimum.tv

optimum.je

optimum.ge

optimum.clinic

optimum.gr

optimum.ie

optimum.in

optimum.krakow.pl

optimum.net.gr

optimum.wpmudev.host

optimum.nyc

optimum.lt

optimum.systems

optimum.aero

optimum.gen.tr

optimum.cz

optimum.asia

optimum.be

optimum.ru

optimum.ma

optimum.academy

optimum.business

optimum.co.in

Similar names

tompium.com

potimum.com

otpimum.com

potimum.net

opitmum.com

optumim.net

otpimum.net

optmium.com

topmium.com

DNS History

10 records (5 active, 5 former)

●NSns1.world4you.at2016-12-10 → 2026-05-09 · 2 obs

● 2016-12-10 18:49:56
● 2026-05-09 16:10:10

●NSns2.world4you.at2016-12-10 → 2026-05-09 · 2 obs

● 2016-12-10 18:49:56
● 2026-05-09 16:10:10

○MXalt1.aspmx.l.google.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 18:49:56
○ 2026-02-15 13:58:42
○ 2026-05-09 16:10:10

○MXalt2.aspmx.l.google.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 18:49:56
○ 2026-02-15 13:58:42
○ 2026-05-09 16:10:10

○MXalt3.aspmx.l.google.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 18:49:56
○ 2026-02-15 13:58:42
○ 2026-05-09 16:10:10

○MXalt4.aspmx.l.google.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 18:49:56
○ 2026-02-15 13:58:42
○ 2026-05-09 16:10:10

○MXaspmx.l.google.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 18:49:56
○ 2026-02-15 13:58:42
○ 2026-05-09 16:10:10

●MXmail.optimum.engineering2026-02-15 → 2026-05-09 · 3 obs

○ 2016-12-10 18:49:56
● 2026-02-15 13:58:42
● 2026-05-09 16:10:10

●MXoptimum-engineering.mail.protection.outlook.com2026-02-15 → 2026-05-09 · 3 obs

○ 2016-12-10 18:49:56
● 2026-02-15 13:58:42
● 2026-05-09 16:10:10

●A81.19.154.982016-12-10 → 2026-05-09 · 2 obs

● 2016-12-10 18:49:56
● 2026-05-09 16:10:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
engineering	v0n0.nic.engineering, v0n1.nic.engineering, v0n2.nic.engineering, v0n3.nic.engineering...	12 records
optimum.engineering	ns1.world4you.at, ns2.world4you.at	-

✅ Authoritative Response

Server:185.132.32.253

NS records: ns1.world4you.at, ns2.world4you.at

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 568ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.19.154.98`
NS	2	`ns1.world4you.at, ns2.world4you.at`
MX	2	`mail.optimum.engineering (pri: 10), optimum-engineering.mail.protection.outl`
TXT	2	`v=spf1 include:spf.protection.outlook.co, MS=ms67035613`
SOA	1	`ns1.world4you.at hostmaster.world4you.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

mail.optimum.engineering has optimum.engineering as its parent.

IP Addresses

optimum.engineering maps to IP address 81.19.154.98.

Other host names, for instance vitamine-source.at, amega.at, namor.at, intersport-shop.at and liafox.com share IP numbers with optimum.engineering.

Name Servers

Two name servers ns1.world4you.at and ns2.world4you.at are delegated to optimum.engineering.

optimum.engineering uses the same name server configuration as other domains, such as obauer.eu, franziskanerinnen-amstetten.at, herak.eu, albagroups.com and iotsys.org.

Host names with two IPs:

ns1.world4you.at points to 2607:f1c0:fe:53:185:132:32:253 and 185.132.32.253.

ns2.world4you.at points to 2001:8d8:fe:53:217:160:82:253 and 217.160.82.253.

Mail Servers

Two mail servers handle optimum.engineering: mail.optimum.engineering and optimum-engineering.mail.protection.outlook.com.

Hosts with eight IP numbers: optimum-engineering.mail.protection.outlook.com points to 2a01:111:f403:ca04::, 2a01:111:f403:ca04::7, 2a01:111:f403:ca09::4, 2a01:111:f403:ca09::d, 52.101.68.16, 52.101.68.36, 52.101.73.4 and 52.101.73.28.

Hosts with one IP number: mail.optimum.engineering points to 81.19.149.89.

optimum.engineering - robtex.com