`firstline.systems`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:cf82^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:256a^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.37.106^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.207.130^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`josh.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b7e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`josh.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c17e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`josh.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:217e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`josh.ns.cloudflare.com`
		A	108.162.193.126^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`josh.ns.cloudflare.com`
		A	172.64.33.126^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`josh.ns.cloudflare.com`
		A	173.245.59.126^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`josh.ns.cloudflare.com`
NS	`lisa.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a83^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c083^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lisa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2083^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lisa.ns.cloudflare.com`
		A	108.162.192.131^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	172.64.32.131^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	173.245.58.131^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
MX	`firstline-systems.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::d^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db6pr03cu00105.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::1^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as9pr07cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::2^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am0pr83cu00402.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::f^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00307.inbound.protection.outlook.com`
		A	52.101.68.16^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db4pr02cu00400.inbound.protection.outlook.com`
		A	52.101.73.15^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.73.19^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as8pr04cu00803.inbound.protection.outlook.com`
		A	52.101.73.26^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as9pr05cu01302.inbound.protection.outlook.com`
TXT	`MS=ms36950381`
TXT	`google-site-verification=-9RQw5neXLMtAwrYzJ7_oGW5zwRlev0VG8SzKkDFRpM`
TXT	`v=spf1 include:spf.protection.outlook.com include:amazonses.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.37.106, 172.67.207.130
		IPv6 hints	2606:4700:3030::ac43:cf82, 2606:4700:3036::6815:256a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=166, name=cloudflare-ech.com
SOA	`josh.ns.cloudflare.com`dns@cloudflare.com serial=2402860695

`systems`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.systems` ⭐
	NS	`v0n1.nic.systems`
	NS	`v0n2.nic.systems`
	NS	`v0n3.nic.systems`
	NS	`v2n0.nic.systems`
	NS	`v2n1.nic.systems`
	SOA	`v0n0.nic.systems`hostmaster@donuts.email serial=1778791228

Same first word

Similar names

sinfilter.com

firstlein.com

fitliners.de

fitliners.com

insfilter.com

sliterfin.com

linefirst.ru

firstlien.com

linefirst.com

DNS History

17 records (7 active, 10 former)

●NSjosh.ns.cloudflare.com2026-05-04 → 2026-05-14 · 3 obs

○ 2017-06-29 18:44:28
● 2026-05-04 11:41:06
● 2026-05-14 21:20:28

●NSlisa.ns.cloudflare.com2026-05-04 → 2026-05-14 · 3 obs

○ 2017-06-29 18:44:28
● 2026-05-04 11:41:06
● 2026-05-14 21:20:28

○NSns1.eurodns.com2016-12-10 → 2017-06-29 · 4 obs

● 2016-12-10 21:07:38
● 2017-06-29 18:44:28
○ 2026-05-04 11:41:06
○ 2026-05-14 21:20:28

○NSns2.eurodns.com2016-12-10 → 2017-06-29 · 4 obs

● 2016-12-10 21:07:38
● 2017-06-29 18:44:28
○ 2026-05-04 11:41:06
○ 2026-05-14 21:20:28

○NSns3.eurodns.com2016-12-10 → 2017-06-29 · 4 obs

● 2016-12-10 21:07:38
● 2017-06-29 18:44:28
○ 2026-05-04 11:41:06
○ 2026-05-14 21:20:28

○NSns4.eurodns.com2016-12-10 → 2017-06-29 · 4 obs

● 2016-12-10 21:07:38
● 2017-06-29 18:44:28
○ 2026-05-04 11:41:06
○ 2026-05-14 21:20:28

●MXfirstline-systems.mail.protection.outlook.com2026-05-04 → 2026-05-14 · 3 obs

○ 2017-06-29 18:44:28
● 2026-05-04 11:41:06
● 2026-05-14 21:20:28

○MXmfwd.eurodns.com2016-12-10 → 2017-06-29 · 4 obs

● 2016-12-10 21:07:38
● 2017-06-29 18:44:28
○ 2026-05-04 11:41:06
○ 2026-05-14 21:20:28

●A104.21.37.1062026-05-14 → 2026-05-14 · 3 obs

○ 2026-05-04 11:41:06
● 2026-05-14 21:20:26
● 2026-05-14 21:20:28

●A172.67.207.1302026-05-14 → 2026-05-14 · 3 obs

○ 2026-05-04 11:41:06
● 2026-05-14 21:20:26
● 2026-05-14 21:20:28

○A188.114.96.02026-05-04 → 2026-05-04 · 4 obs

○ 2017-06-29 18:44:28
● 2026-05-04 11:41:06
○ 2026-05-14 21:20:26
○ 2026-05-14 21:20:28

○A188.114.97.02026-05-04 → 2026-05-04 · 4 obs

○ 2017-06-29 18:44:28
● 2026-05-04 11:41:06
○ 2026-05-14 21:20:26
○ 2026-05-14 21:20:28

●A2606:4700:3030::ac43:cf822026-05-14 → 2026-05-14 · 3 obs

○ 2026-05-04 11:41:06
● 2026-05-14 21:20:26
● 2026-05-14 21:20:28

●A2606:4700:3036::6815:256a2026-05-14 → 2026-05-14 · 3 obs

○ 2026-05-04 11:41:06
● 2026-05-14 21:20:26
● 2026-05-14 21:20:28

○A2a06:98c1:3120::2026-05-04 → 2026-05-04 · 4 obs

○ 2017-06-29 18:44:28
● 2026-05-04 11:41:06
○ 2026-05-14 21:20:26
○ 2026-05-14 21:20:28

○A2a06:98c1:3121::2026-05-04 → 2026-05-04 · 4 obs

○ 2017-06-29 18:44:28
● 2026-05-04 11:41:06
○ 2026-05-14 21:20:26
○ 2026-05-14 21:20:28

○A80.92.65.1442016-12-10 → 2017-06-29 · 4 obs

● 2016-12-10 21:07:38
● 2017-06-29 18:44:28
○ 2026-05-04 11:41:06
○ 2026-05-14 21:20:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
systems	v0n0.nic.systems, v0n1.nic.systems, v0n2.nic.systems, v0n3.nic.systems...	12 records
firstline.systems	lisa.ns.cloudflare.com, josh.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.131

NS records: lisa.ns.cloudflare.com, josh.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstline.systems (unsigned zone)

⏱️ Timing

Total: 718ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.207.130, 104.21.37.106`
AAAA	2	`2606:4700:3036::6815:256a, 2606:4700:3030::ac43:cf82`
NS	2	`josh.ns.cloudflare.com, lisa.ns.cloudflare.com`
MX	1	`firstline-systems.mail.protection.outloo`
TXT	3	`MS=ms36950381, google-site-verification=-9RQw5neXLMtAwr...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`josh.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.systems, v0n1.nic.systems, v0n2.nic.systems...)

Analysis

IP Addresses

firstline.systems maps to four IP numbers: 2606:4700:3030::ac43:cf82, 2606:4700:3036::6815:256a, 104.21.37.106 and 172.67.207.130.

Other host names, for instance ceilingcassette.com, storyanonimo.io, schwinnbike.us, sswkj.com and andesshsdfg5.com share IP numbers with firstline.systems.

Name Servers

Two name servers josh.ns.cloudflare.com and lisa.ns.cloudflare.com are delegated to firstline.systems.

firstline.systems uses the same name server configuration as other domains, such as wakeboats.com, pi-china.org, myip.com.tw, optimeringsguiden.dk and gbox.tw.

firstline.systems at least partially shares name servers with other domains such as outboundspamprotection.com, feurio.net, schindeler.nl, tv10.gr and drozdoff.com.

these name servers are commonly used with the name servers ken.ns.cloudflare.com.

Host names with six IP numbers: Host name josh.ns.cloudflare.com points to 2606:4700:58::adf5:3b7e, 2803:f800:50::6ca2:c17e, 2a06:98c1:50::ac40:217e, 108.162.193.126, 172.64.33.126 and 173.245.59.126; host name lisa.ns.cloudflare.com points to 2606:4700:50::adf5:3a83, 2803:f800:50::6ca2:c083, 2a06:98c1:50::ac40:2083, 108.162.192.131, 172.64.32.131 and 173.245.58.131.

Mail Servers

firstline.systems is handled by a single mail server, firstline-systems.mail.protection.outlook.com.

firstline-systems.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::d, 2a01:111:f403:ca09::1, 2a01:111:f403:ca09::2, 2a01:111:f403:ca09::f, 52.101.68.16, 52.101.73.15, 52.101.73.19 and 52.101.73.26.

firstline.systems - robtex.com