authusb.com - dns.ninja

`authusb.com`

DNSSEC	⚠️ Not signed
A	104.21.75.218^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`dns49.servidoresdns.net` ⭐
		A	217.76.128.165^{🇪🇸 IONOS-AS217.76.128.0/19 arsys.es}
			PTR	`dns49.servidoresdns.net`
NS	`dns50.servidoresdns.net`
		A	82.223.218.165^{🇪🇸 IONOS-AS82.223.0.0/16 arsys.es}
			PTR	`dns50.servidoresdns.net`
MX	`authusb-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::b^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-dbbpr03cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::9^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as8pr04cu00801.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::b^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::e^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00206.inbound.protection.outlook.com`
		A	52.101.68.8^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-du0pr03cu00100.inbound.protection.outlook.com`
		A	52.101.73.4^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr83cu00404.inbound.protection.outlook.com`
		A	52.101.73.6^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am6pr04cu00306.inbound.protection.outlook.com`
		A	52.101.73.30^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am7pr05cu00306.inbound.protection.outlook.com`
TXT	`MS=ms41486203`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
TXT	`google-site-verification=i8QaQh5zARVPxxNN-JHL1CIMXI2aFbpmPrb0ab0PUBw`
SOA	`dns49.servidoresdns.net`hostmaster@servidoresdns.net 2021-01-15 #60

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1785847012

Same first word

authusb.com

authusb.net

Similar names

authsub.com

tushuba.com

batushu.com

usathub.com

authbus.com

subauth.com

suhubat.com

subathu.com

tubashu.cn

usbauth.com

shabutu.jp

ustahub.com

DNS History

10 records (4 active, 6 former)

●NSdns49.servidoresdns.net2026-03-03 → 2026-08-04 · 3 obs

○ 2018-05-08 19:34:58
● 2026-03-03 09:59:40
● 2026-08-04 13:02:00

●NSdns50.servidoresdns.net2026-03-03 → 2026-08-04 · 3 obs

○ 2018-05-08 19:34:58
● 2026-03-03 09:59:40
● 2026-08-04 13:02:00

○NSns1.wordpress.com2018-05-08 → 2018-05-08 · 3 obs

● 2018-05-08 19:34:58
○ 2026-03-03 09:59:40
○ 2026-08-04 13:02:00

○NSns2.wordpress.com2018-05-08 → 2018-05-08 · 3 obs

● 2018-05-08 19:34:58
○ 2026-03-03 09:59:40
○ 2026-08-04 13:02:00

○NSns3.wordpress.com2018-05-08 → 2018-05-08 · 3 obs

● 2018-05-08 19:34:58
○ 2026-03-03 09:59:40
○ 2026-08-04 13:02:00

●MXauthusb-com.mail.protection.outlook.com2026-03-03 → 2026-08-04 · 2 obs

● 2026-03-03 09:59:40
● 2026-08-04 13:02:00

●A104.21.75.2182026-07-13 → 2026-08-04 · 3 obs

○ 2026-04-20 19:07:14
● 2026-07-13 00:45:34
● 2026-08-04 13:02:00

○A192.0.78.242018-05-08 → 2018-05-08 · 3 obs

● 2018-05-08 19:34:58
○ 2026-03-03 09:59:40
○ 2026-08-04 13:02:00

○A192.0.78.252018-05-08 → 2018-05-08 · 3 obs

● 2018-05-08 19:34:58
○ 2026-03-03 09:59:40
○ 2026-08-04 13:02:00

○A217.76.128.352026-03-03 → 2026-04-20 · 5 obs

○ 2018-05-08 19:34:58
● 2026-03-03 09:59:40
● 2026-04-20 19:07:14
○ 2026-07-13 00:45:34
○ 2026-08-04 13:02:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
authusb.com	dns50.servidoresdns.net, dns49.servidoresdns.net	-

✅ Authoritative Response

Server:217.76.128.165

NS records: dns50.servidoresdns.net, dns49.servidoresdns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for authusb.com (unsigned zone)

⏱️ Timing

Total: 493ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`104.21.75.218`
NS	2	`dns49.servidoresdns.net, dns50.servidoresdns.net`
MX	1	`authusb-com.mail.protection.outlook.com`
TXT	3	`v=spf1 include:spf.protection.outlook.co, google-site-verification=i8QaQh5zARVPxxN...`
SOA	1	`dns49.servidoresdns.net hostmaster.servi`

Analysis

IP Addresses

authusb.com resolves to just one IP address, 104.21.75.218.

Two other host names, along with tariandunia2.com, ruisiedu.com and ps-pct.com, also share IP numbers with authusb.com.

Name Servers

DNS delegation for authusb.com points to two name servers: dns49.servidoresdns.net and dns50.servidoresdns.net.

authusb.com shares its NS records with other domains, for example engrama.com, gestoriacarabanchel.es, aratria.com and two others.

authusb.com has at least partial name server overlap with other domains, such as chiruca.es, feribex.com, recambios-condes.com and two others.

dns49.servidoresdns.net directs to 217.76.128.165 and dns50.servidoresdns.net directs to 82.223.218.165; each host name points to exactly one IP number.

Mail Servers

The sole mail server for authusb.com is authusb-com.mail.protection.outlook.com.

With 8 IP addresses total, authusb-com.mail.protection.outlook.com resolves to 52.101.68.8, 52.101.73.4, 52.101.73.6 and 5 others.