`firstline.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3108::ac42:2876^{🇺🇸 Cloudflare2606:4700:3108::/48 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3108::ac42:2b8a^{🇺🇸 Cloudflare2606:4700:3108::/48 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.66.40.118^{🇺🇸 Cloudflare172.66.40.0/21 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.66.43.138^{🇺🇸 Cloudflare172.66.40.0/21 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`brad.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b69^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brad.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c169^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`brad.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2169^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`brad.ns.cloudflare.com`
		A	108.162.193.105^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brad.ns.cloudflare.com`
		A	172.64.33.105^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brad.ns.cloudflare.com`
		A	173.245.59.105^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brad.ns.cloudflare.com`
NS	`gwen.ns.cloudflare.com`
		A	2606:4700:50::adf5:3aa0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0a0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`gwen.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20a0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`gwen.ns.cloudflare.com`
		A	108.162.192.160^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
		A	172.64.32.160^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
		A	173.245.58.160^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c08::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bi-in-f26.1e100.net`
		A	142.251.167.27^{🇺🇸 Google142.251.167.0/24}
			PTR	`ww-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`1password-site-verification=Q3BEBGH2AJCWXEJ6ICTE26ZCRQ`
TXT	`MS=ms60706525`
TXT	`google-site-verification=4EViutKzncSlpirQO_P7GFcSR_gStXpYxcKEZK8Thrs`
TXT	`google-site-verification=bMp8OIPyEIWXT-ESFn49fZ5ROvlZHpoJ15Ni3q0MAPU`
TXT	`google-site-verification=tkUovXC9PXjU4gn6Qo65I-D91Jv3PD2MUugd0-NYuAo`
TXT	`linear-domain-verification=66nhyjzk45ky`
TXT	`nordpass-domain-verification=917add3fd795040f53f7322c05d71cd9ca1b1be7b38f6dfd...`
TXT	`slack-domain-verification=KIsDCOwNSLddkvz0u1gRuJTgeKGBukeDrYuFyuJp`
TXT	`v=spf1 mx include:_spf.google.com include:sendgrid.net include:spf.protection...`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	172.66.40.118, 172.66.43.138
		IPv6 hints	2606:4700:3108::ac42:2876, 2606:4700:3108::ac42:2b8a
SOA	`brad.ns.cloudflare.com`dns@cloudflare.com serial=2406868344

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1781661797

Subdomains

marlin.firstline.org

app.firstline.org

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 (11 active, 6 former)

●NSbrad.ns.cloudflare.com2026-05-16 → 2026-06-17 · 3 obs

○ 2017-04-19 11:06:44
● 2026-05-16 18:57:10
● 2026-06-17 02:31:46

○NSbuy.internettraffic.com2015-06-08 → 2016-04-02 · 4 obs

● 2015-06-08 06:02:24
● 2016-04-02 00:00:00
○ 2016-09-15 17:35:06
○ 2026-06-17 02:31:46

●NSgwen.ns.cloudflare.com2026-05-16 → 2026-06-17 · 3 obs

○ 2017-04-19 11:06:44
● 2026-05-16 18:57:10
● 2026-06-17 02:31:46

○NSns1.uniregistrymarket.link2016-09-15 → 2017-04-19 · 5 obs

○ 2016-04-02 00:00:00
● 2016-09-15 17:35:06
● 2017-04-19 11:06:44
○ 2026-05-16 18:57:10
○ 2026-06-17 02:31:46

○NSns2.uniregistrymarket.link2016-09-15 → 2017-04-19 · 5 obs

○ 2016-04-02 00:00:00
● 2016-09-15 17:35:06
● 2017-04-19 11:06:44
○ 2026-05-16 18:57:10
○ 2026-06-17 02:31:46

○NSsell.internettraffic.com2015-06-08 → 2016-04-02 · 4 obs

● 2015-06-08 06:02:24
● 2016-04-02 00:00:00
○ 2016-09-15 17:35:06
○ 2026-06-17 02:31:46

●MXalt1.aspmx.l.google.com2026-05-16 → 2026-06-17 · 2 obs

● 2026-05-16 18:57:10
● 2026-06-17 02:31:46

●MXalt2.aspmx.l.google.com2026-05-16 → 2026-06-17 · 2 obs

● 2026-05-16 18:57:10
● 2026-06-17 02:31:46

●MXalt3.aspmx.l.google.com2026-05-16 → 2026-06-17 · 2 obs

● 2026-05-16 18:57:10
● 2026-06-17 02:31:46

●MXalt4.aspmx.l.google.com2026-05-16 → 2026-06-17 · 2 obs

● 2026-05-16 18:57:10
● 2026-06-17 02:31:46

●MXaspmx.l.google.com2026-05-16 → 2026-06-17 · 2 obs

● 2026-05-16 18:57:10
● 2026-06-17 02:31:46

●A172.66.40.1182026-05-16 → 2026-06-17 · 3 obs

○ 2017-04-19 11:06:44
● 2026-05-16 18:57:10
● 2026-06-17 02:31:46

●A172.66.43.1382026-05-16 → 2026-06-17 · 3 obs

○ 2017-04-19 11:06:44
● 2026-05-16 18:57:10
● 2026-06-17 02:31:46

●A2606:4700:3108::ac42:28762026-05-16 → 2026-06-17 · 3 obs

○ 2017-04-19 11:06:44
● 2026-05-16 18:57:10
● 2026-06-17 02:31:46

●A2606:4700:3108::ac42:2b8a2026-05-16 → 2026-06-17 · 3 obs

○ 2017-04-19 11:06:44
● 2026-05-16 18:57:10
● 2026-06-17 02:31:46

○A69.172.201.1532016-09-15 → 2017-04-19 · 5 obs

○ 2016-04-02 00:00:00
● 2016-09-15 17:35:06
● 2017-04-19 11:06:44
○ 2026-05-16 18:57:10
○ 2026-06-17 02:31:46

○A69.172.201.2082015-06-08 → 2016-04-02 · 4 obs

● 2015-06-08 06:02:24
● 2016-04-02 00:00:00
○ 2016-09-15 17:35:06
○ 2026-06-17 02:31:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
firstline.org	gwen.ns.cloudflare.com, brad.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.160

NS records: gwen.ns.cloudflare.com, brad.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstline.org (unsigned zone)

⏱️ Timing

Total: 835ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.66.43.138, 172.66.40.118`
AAAA	2	`2606:4700:3108::ac42:2876, 2606:4700:3108::ac42:2b8a`
NS	2	`brad.ns.cloudflare.com, gwen.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	9	`1password-site-verification=Q3BEBGH2AJCW, MS=ms60706525...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`brad.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

marlin.firstline.org and app.firstline.org each fall under firstline.org as their parent domain.

IP Addresses

firstline.org directs to four IP numbers, which are 172.66.40.118, 172.66.43.138, 2606:4700:3108::ac42:2876 and 2606:4700:3108::ac42:2b8a.

Two other host names, along with unlimitedhost.id, phonecasewiz.com and http.fuyin.tv, also share IP numbers with firstline.org.

Name Servers

firstline.org is served by two delegated name servers, brad.ns.cloudflare.com and gwen.ns.cloudflare.com.

firstline.org shares its NS records with other domains, for example sjgroup.top, zaigersa.co.za, ccgn.co and two others.

There is at least partial name server overlap between firstline.org and other domains — yzn6b.xyz, graces5.com, hamperville.com and two more among them.

These name servers frequently co-occur with the name servers theo.ns.cloudflare.com and emma.ns.cloudflare.com.

DNS names with 6 IP addresses:

brad.ns.cloudflare.com carries IP addresses 108.162.193.105, 172.64.33.105 and 173.245.59.105, with 3 other addresses beyond those.

gwen.ns.cloudflare.com carries IP addresses 108.162.192.160, 172.64.32.160 and 173.245.58.160, with 3 other addresses beyond those.

Mail Servers

Five mail servers handle firstline.org: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

There is at least a partial MX overlap between firstline.org and other domains, including eileenscookieslincoln.com, cheerfulhearts.com, myfilin.com and two others.

These mail servers tend to appear in combination with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 others.

Host names that have two IP addresses:

aspmx.l.google.com maps to two IP addresses — 142.251.167.27 and 2607:f8b0:4004:c08::1a.

alt1.aspmx.l.google.com maps to two IP addresses — 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.26 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com maps to two IP addresses — 192.178.223.26 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com maps to two IP addresses — 172.253.157.27 and 2a00:1450:400c:c23::1b.