brainnote.app - dns.ninja

`brainnote.app`

DNSSEC	⚠️ Not signed
A	3.162.103.45^{🇺🇸 Amazon3.162.96.0/21}
		PTR	`server-3-162-103-45.iad61.r.cloudfront.net`
A	3.162.103.51^{🇺🇸 Amazon3.162.96.0/21}
A	3.162.103.72^{🇺🇸 Amazon3.162.96.0/21}
A	3.162.103.112^{🇺🇸 Amazon3.162.96.0/21}
NS	`ns-1238.awsdns-26.org` ⭐
		A	2600:9000:5304:d600::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1238.awsdns-26.org`
		A	205.251.196.214^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1238.awsdns-26.org`
NS	`ns-118.awsdns-14.com`
		A	2600:9000:5300:7600::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-118.awsdns-14.com`
		A	205.251.192.118^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-118.awsdns-14.com`
NS	`ns-1573.awsdns-04.co.uk`
		A	2600:9000:5306:2500::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1573.awsdns-04.co.uk`
		A	205.251.198.37^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1573.awsdns-04.co.uk`
NS	`ns-772.awsdns-32.net`
		A	2600:9000:5303:400::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-772.awsdns-32.net`
		A	205.251.195.4^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-772.awsdns-32.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1d::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ww-in-f26.1e100.net`
		A	142.251.163.27^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.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::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`google-site-verification=EUdIN2fY6sRo4d-PJOYVV_dpByF2I8_WYJdak5f8rN8`
SOA	`ns-1238.awsdns-26.org`awsdns-hostmaster@amazon.com serial=1

`app`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=101427

🔒 HSTS Preload (+subdomains)

Subdomains

www.brainnote.app

qa.brainnote.app

Same first word

brainnote.app

brainnote.com

brainnote.li

Similar names

DNS History

89 records (13 active, 76 former)

●NSns-118.awsdns-14.com2026-02-16 → 2026-06-23 · 2 obs

● 2026-02-16 06:30:54
● 2026-06-23 00:34:42

●NSns-1238.awsdns-26.org2026-02-16 → 2026-06-23 · 2 obs

● 2026-02-16 06:30:54
● 2026-06-23 00:34:42

●NSns-1573.awsdns-04.co.uk2026-02-16 → 2026-06-23 · 2 obs

● 2026-02-16 06:30:54
● 2026-06-23 00:34:42

●NSns-772.awsdns-32.net2026-02-16 → 2026-06-23 · 2 obs

● 2026-02-16 06:30:54
● 2026-06-23 00:34:42

●MXalt1.aspmx.l.google.com2026-02-16 → 2026-06-23 · 5 obs

● 2026-02-16 06:30:54
● 2026-06-17 05:23:14
○ 2026-06-17 07:38:54
● 2026-06-17 08:21:18
● 2026-06-23 00:34:42

●MXalt2.aspmx.l.google.com2026-02-16 → 2026-06-23 · 5 obs

● 2026-02-16 06:30:54
● 2026-06-17 05:23:14
○ 2026-06-17 07:38:54
● 2026-06-17 08:21:18
● 2026-06-23 00:34:42

●MXalt3.aspmx.l.google.com2026-02-16 → 2026-06-23 · 5 obs

● 2026-02-16 06:30:54
● 2026-06-17 05:23:14
○ 2026-06-17 07:38:54
● 2026-06-17 08:21:18
● 2026-06-23 00:34:42

●MXalt4.aspmx.l.google.com2026-02-16 → 2026-06-23 · 5 obs

● 2026-02-16 06:30:54
● 2026-06-17 05:23:14
○ 2026-06-17 07:38:54
● 2026-06-17 08:21:18
● 2026-06-23 00:34:42

●MXaspmx.l.google.com2026-02-16 → 2026-06-23 · 5 obs

● 2026-02-16 06:30:54
● 2026-06-17 05:23:14
○ 2026-06-17 07:38:54
● 2026-06-17 08:21:18
● 2026-06-23 00:34:42

○A108.156.46.192026-02-16 → 2026-06-21 · 22 obs

● 2026-02-16 06:30:54
● 2026-02-17 00:13:44
○ 2026-02-18 10:33:14
○ 2026-03-31 11:24:38
● 2026-04-01 01:32:14
● 2026-04-07 00:47:24
○ 2026-04-08 20:35:22
○ 2026-05-01 08:59:34
● 2026-05-02 01:48:46
● 2026-05-12 09:14:56
○ 2026-05-15 12:58:22
○ 2026-06-08 21:44:26
● 2026-06-10 03:19:00
● 2026-06-16 04:42:24
○ 2026-06-20 02:06:18
● 2026-06-20 10:06:58
○ 2026-06-20 21:32:36
● 2026-06-21 16:23:30
○ 2026-06-21 20:39:14
● 2026-06-21 21:15:48
○ 2026-06-22 18:46:54
○ 2026-06-23 00:34:42

○A108.156.46.402026-02-16 → 2026-06-21 · 22 obs

○A108.156.46.752026-02-16 → 2026-06-21 · 22 obs

○A108.156.46.792026-02-16 → 2026-06-21 · 22 obs

○A13.33.109.1082026-04-27 → 2026-05-19 · 20 obs

○ 2026-04-26 10:25:22
● 2026-04-27 01:15:50
● 2026-04-27 03:59:06
○ 2026-04-27 05:49:22
○ 2026-04-29 02:35:42
● 2026-04-30 03:56:42
○ 2026-04-30 07:50:52
○ 2026-05-06 13:45:30
● 2026-05-07 01:24:38
○ 2026-05-07 05:10:38
○ 2026-05-08 20:27:58
● 2026-05-09 11:07:42
○ 2026-05-09 17:54:32
○ 2026-05-13 14:19:30
● 2026-05-14 05:18:22
○ 2026-05-15 04:06:48
○ 2026-05-18 22:31:18
● 2026-05-19 02:48:02
○ 2026-05-19 03:31:10
○ 2026-06-23 00:34:42

○A13.33.109.162026-04-27 → 2026-05-19 · 20 obs

○A13.33.109.282026-04-27 → 2026-05-19 · 20 obs

○A13.33.109.632026-04-27 → 2026-05-19 · 20 obs

○A13.35.107.1282026-04-15 → 2026-06-12 · 7 obs

○ 2026-04-14 11:27:12
● 2026-04-15 00:34:50
○ 2026-04-15 03:00:16
○ 2026-06-12 17:23:16
● 2026-06-12 20:11:00
○ 2026-06-12 20:56:22
○ 2026-06-23 00:34:42

○A13.35.107.332026-04-15 → 2026-06-12 · 7 obs

○ 2026-04-14 11:27:12
● 2026-04-15 00:34:50
○ 2026-04-15 03:00:16
○ 2026-06-12 17:23:16
● 2026-06-12 20:11:00
○ 2026-06-12 20:56:22
○ 2026-06-23 00:34:42

○A13.35.107.812026-04-15 → 2026-06-12 · 7 obs

○ 2026-04-14 11:27:12
● 2026-04-15 00:34:50
○ 2026-04-15 03:00:16
○ 2026-06-12 17:23:16
● 2026-06-12 20:11:00
○ 2026-06-12 20:56:22
○ 2026-06-23 00:34:42

○A13.35.107.882026-04-15 → 2026-06-12 · 7 obs

○ 2026-04-14 11:27:12
● 2026-04-15 00:34:50
○ 2026-04-15 03:00:16
○ 2026-06-12 17:23:16
● 2026-06-12 20:11:00
○ 2026-06-12 20:56:22
○ 2026-06-23 00:34:42

○A18.165.43.112026-03-30 → 2026-03-30 · 5 obs

○ 2026-03-30 05:05:00
● 2026-03-30 12:01:08
● 2026-03-30 12:38:42
○ 2026-03-30 14:18:00
○ 2026-06-23 00:34:42

○A18.165.43.1172026-03-30 → 2026-03-30 · 5 obs

○ 2026-03-30 05:05:00
● 2026-03-30 12:01:08
● 2026-03-30 12:38:42
○ 2026-03-30 14:18:00
○ 2026-06-23 00:34:42

○A18.165.43.1182026-03-30 → 2026-03-30 · 5 obs

○ 2026-03-30 05:05:00
● 2026-03-30 12:01:08
● 2026-03-30 12:38:42
○ 2026-03-30 14:18:00
○ 2026-06-23 00:34:42

○A18.165.43.302026-03-30 → 2026-03-30 · 5 obs

○ 2026-03-30 05:05:00
● 2026-03-30 12:01:08
● 2026-03-30 12:38:42
○ 2026-03-30 14:18:00
○ 2026-06-23 00:34:42

○A18.239.183.1112026-05-07 → 2026-05-07 · 4 obs

○ 2026-05-07 05:10:38
● 2026-05-07 13:42:14
○ 2026-05-07 14:13:38
○ 2026-06-23 00:34:42

○A18.239.183.672026-05-07 → 2026-05-07 · 4 obs

○ 2026-05-07 05:10:38
● 2026-05-07 13:42:14
○ 2026-05-07 14:13:38
○ 2026-06-23 00:34:42

○A18.239.183.722026-05-07 → 2026-05-07 · 4 obs

○ 2026-05-07 05:10:38
● 2026-05-07 13:42:14
○ 2026-05-07 14:13:38
○ 2026-06-23 00:34:42

○A18.239.183.852026-05-07 → 2026-05-07 · 4 obs

○ 2026-05-07 05:10:38
● 2026-05-07 13:42:14
○ 2026-05-07 14:13:38
○ 2026-06-23 00:34:42

○A18.65.25.1132026-02-18 → 2026-03-20 · 19 obs

○ 2026-02-17 00:13:44
● 2026-02-18 10:33:14
○ 2026-02-18 14:16:22
○ 2026-02-19 19:27:20
● 2026-02-20 00:32:12
○ 2026-02-20 11:22:48
○ 2026-02-24 16:21:14
● 2026-02-25 06:41:48
○ 2026-02-26 04:07:10
○ 2026-02-28 08:34:32
● 2026-03-01 07:44:38
○ 2026-03-02 05:32:08
● 2026-03-02 19:03:28
● 2026-03-04 09:27:14
○ 2026-03-04 13:31:02
○ 2026-03-20 18:26:14
● 2026-03-20 19:02:44
○ 2026-03-20 20:16:38
○ 2026-06-23 00:34:42

○A18.65.25.1172026-02-18 → 2026-03-20 · 19 obs

○A18.65.25.862026-02-18 → 2026-03-20 · 19 obs

○A18.65.25.92026-02-18 → 2026-03-20 · 19 obs

○A216.137.53.1142026-06-17 → 2026-06-18 · 9 obs

○ 2026-06-16 04:42:24
● 2026-06-17 05:23:14
○ 2026-06-17 07:38:54
○ 2026-06-17 13:27:22
● 2026-06-17 15:18:08
○ 2026-06-17 19:30:12
● 2026-06-18 05:46:22
○ 2026-06-18 11:02:00
○ 2026-06-23 00:34:42

○A216.137.53.212026-06-17 → 2026-06-18 · 9 obs

○A216.137.53.482026-06-17 → 2026-06-18 · 9 obs

○A216.137.53.502026-06-17 → 2026-06-18 · 9 obs

○A3.160.188.282026-05-26 → 2026-06-05 · 16 obs

○ 2026-05-25 06:51:04
● 2026-05-26 22:03:48
○ 2026-05-27 06:42:54
● 2026-05-27 14:04:58
○ 2026-05-27 15:30:00
● 2026-05-28 09:04:20
● 2026-05-28 10:37:58
○ 2026-05-28 11:39:10
○ 2026-05-31 09:28:08
● 2026-06-01 11:41:20
● 2026-06-01 13:08:00
○ 2026-06-01 17:14:40
○ 2026-06-04 12:24:08
● 2026-06-05 06:51:28
○ 2026-06-05 07:45:24
○ 2026-06-23 00:34:42

○A3.160.188.732026-05-26 → 2026-06-05 · 16 obs

○A3.160.188.892026-05-26 → 2026-06-05 · 16 obs

○A3.160.188.942026-05-26 → 2026-06-05 · 16 obs

○A3.161.213.1202026-04-12 → 2026-04-12 · 4 obs

○ 2026-04-12 08:55:34
● 2026-04-12 10:52:32
○ 2026-04-12 11:58:04
○ 2026-06-23 00:34:42

○A3.161.213.292026-04-12 → 2026-04-12 · 4 obs

○ 2026-04-12 08:55:34
● 2026-04-12 10:52:32
○ 2026-04-12 11:58:04
○ 2026-06-23 00:34:42

○A3.161.213.472026-04-12 → 2026-04-12 · 4 obs

○ 2026-04-12 08:55:34
● 2026-04-12 10:52:32
○ 2026-04-12 11:58:04
○ 2026-06-23 00:34:42

○A3.161.213.902026-04-12 → 2026-04-12 · 4 obs

○ 2026-04-12 08:55:34
● 2026-04-12 10:52:32
○ 2026-04-12 11:58:04
○ 2026-06-23 00:34:42

●A3.162.103.1122026-02-18 → 2026-06-23 · 19 obs

○ 2026-02-16 06:30:54
○ 2026-02-18 10:33:14
● 2026-02-18 14:16:22
○ 2026-02-18 23:42:40
● 2026-02-19 04:40:26
● 2026-02-23 04:44:12
○ 2026-02-23 08:27:18
○ 2026-03-20 11:20:36
● 2026-03-20 18:26:14
● 2026-03-23 14:46:00
○ 2026-03-25 05:44:04
○ 2026-06-18 13:36:26
● 2026-06-19 13:09:10
○ 2026-06-19 14:48:28
● 2026-06-20 22:08:12
○ 2026-06-21 16:23:30
● 2026-06-21 20:39:14
○ 2026-06-21 21:15:48
● 2026-06-23 00:34:42

●A3.162.103.452026-02-18 → 2026-06-23 · 19 obs

●A3.162.103.512026-02-18 → 2026-06-23 · 19 obs

●A3.162.103.722026-02-18 → 2026-06-23 · 19 obs

○A3.166.135.1122026-04-29 → 2026-05-19 · 11 obs

○ 2026-04-27 22:13:56
● 2026-04-29 01:44:14
● 2026-04-29 02:35:42
○ 2026-04-30 03:56:42
○ 2026-04-30 07:50:52
● 2026-04-30 21:34:30
○ 2026-04-30 23:39:36
○ 2026-05-19 02:48:02
● 2026-05-19 03:31:10
○ 2026-05-21 01:56:42
○ 2026-06-23 00:34:42

○A3.166.135.592026-04-29 → 2026-05-19 · 11 obs

○A3.166.135.62026-04-29 → 2026-05-19 · 11 obs

○A3.166.135.72026-04-29 → 2026-05-19 · 11 obs

○A3.170.185.1012026-05-21 → 2026-06-07 · 20 obs

○ 2026-05-19 03:31:10
● 2026-05-21 01:56:42
● 2026-05-21 12:42:52
○ 2026-05-21 21:16:34
○ 2026-05-21 22:08:22
● 2026-05-22 09:44:58
● 2026-05-27 15:30:00
○ 2026-05-28 09:04:20
○ 2026-05-30 04:07:50
● 2026-05-30 14:28:22
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○ 2026-06-01 13:08:00
● 2026-06-01 17:14:40
● 2026-06-04 12:24:08
○ 2026-06-05 06:51:28
○ 2026-06-05 23:01:26
● 2026-06-06 08:44:00
● 2026-06-07 22:13:38
○ 2026-06-08 00:22:04
○ 2026-06-23 00:34:42

○A3.170.185.382026-05-21 → 2026-06-07 · 20 obs

○A3.170.185.642026-05-21 → 2026-06-07 · 20 obs

○A3.170.185.932026-05-21 → 2026-06-07 · 20 obs

○A3.171.171.1042026-03-29 → 2026-06-22 · 19 obs

○ 2026-03-29 13:56:04
● 2026-03-29 23:50:04
● 2026-03-30 05:05:00
○ 2026-03-30 12:01:08
○ 2026-04-15 20:16:24
● 2026-04-16 08:31:28
○ 2026-04-16 16:25:32
● 2026-04-17 04:32:32
○ 2026-04-17 08:38:14
● 2026-04-19 01:30:52
○ 2026-04-19 14:59:36
○ 2026-05-25 06:51:04
● 2026-06-18 13:36:26
● 2026-06-20 02:06:18
○ 2026-06-20 10:06:58
● 2026-06-20 21:32:36
○ 2026-06-20 22:08:12
● 2026-06-22 18:46:54
○ 2026-06-23 00:34:42

○A3.171.171.392026-03-29 → 2026-06-22 · 19 obs

○A3.171.171.722026-03-29 → 2026-06-22 · 19 obs

○A3.171.171.942026-03-29 → 2026-06-22 · 19 obs

○A3.174.113.1102026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-25 05:44:04
● 2026-03-27 17:20:40
○ 2026-03-28 02:15:28
○ 2026-06-23 00:34:42

○A3.174.113.1132026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-25 05:44:04
● 2026-03-27 17:20:40
○ 2026-03-28 02:15:28
○ 2026-06-23 00:34:42

○A3.174.113.1142026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-25 05:44:04
● 2026-03-27 17:20:40
○ 2026-03-28 02:15:28
○ 2026-06-23 00:34:42

○A3.174.113.952026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-25 05:44:04
● 2026-03-27 17:20:40
○ 2026-03-28 02:15:28
○ 2026-06-23 00:34:42

○A3.174.193.1142026-05-28 → 2026-05-28 · 5 obs

○ 2026-05-28 11:39:10
● 2026-05-28 18:45:00
● 2026-05-28 23:34:20
○ 2026-05-29 12:32:34
○ 2026-06-23 00:34:42

○A3.174.193.262026-05-28 → 2026-05-28 · 5 obs

○ 2026-05-28 11:39:10
● 2026-05-28 18:45:00
● 2026-05-28 23:34:20
○ 2026-05-29 12:32:34
○ 2026-06-23 00:34:42

○A3.174.193.292026-05-28 → 2026-05-28 · 5 obs

○ 2026-05-28 11:39:10
● 2026-05-28 18:45:00
● 2026-05-28 23:34:20
○ 2026-05-29 12:32:34
○ 2026-06-23 00:34:42

○A3.174.193.562026-05-28 → 2026-05-28 · 5 obs

○ 2026-05-28 11:39:10
● 2026-05-28 18:45:00
● 2026-05-28 23:34:20
○ 2026-05-29 12:32:34
○ 2026-06-23 00:34:42

○A52.84.45.1022026-05-30 → 2026-05-30 · 4 obs

○ 2026-05-29 12:32:34
● 2026-05-30 02:24:46
○ 2026-05-30 03:10:00
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○A52.85.78.1172026-03-28 → 2026-06-17 · 20 obs

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○A99.84.160.772026-03-08 → 2026-04-10 · 11 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com...	10 records
brainnote.app	ns-772.awsdns-32.net, ns-1573.awsdns-04.co.uk, ns-1238.awsdns-26.org, ns-118.awsdns-14.com	-

✅ Authoritative Response

Server:205.251.198.37

NS records: ns-772.awsdns-32.net, ns-1573.awsdns-04.co.uk, ns-1238.awsdns-26.org, ns-118.awsdns-14.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for brainnote.app (unsigned zone)

⏱️ Timing

Total: 740ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.162.103.112, 3.162.103.72...`
NS	4	`ns-118.awsdns-14.com, ns-1238.awsdns-26.org...`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	1	`google-site-verification=EUdIN2fY6sRo4d-`
SOA	1	`ns-1238.awsdns-26.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld2.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...)

Analysis

Hierarchy

The parent domain of www.brainnote.app and qa.brainnote.app is brainnote.app.

IP Addresses

brainnote.app has four IP addresses: 3.162.103.45, 3.162.103.51, 3.162.103.72 and 3.162.103.112.

Among the host names that share IP numbers with brainnote.app are www.leaftoken.io, charlesflood.net, lmt-attachments.com and two others.

Name Servers

The domain brainnote.app is delegated to these four name servers: ns-118.awsdns-14.com, ns-772.awsdns-32.net, ns-1238.awsdns-26.org and ns-1573.awsdns-04.co.uk.

brainnote.app partially shares its NS delegation with several other domains, including tempo.tv, internetservicebrainerd.com, jbpo.or.jp and two others.

ns-118.awsdns-14.com, ns-772.awsdns-32.net, ns-1238.awsdns-26.org and ns-1573.awsdns-04.co.uk each carry two IP addresses. ns-118.awsdns-14.com has 205.251.192.118 and 2600:9000:5300:7600::1; ns-772.awsdns-32.net has 205.251.195.4 and 2600:9000:5303:400::1; ns-1238.awsdns-26.org has 205.251.196.214 and 2600:9000:5304:d600::1; ns-1573.awsdns-04.co.uk has 205.251.198.37 and 2600:9000:5306:2500::1.

Mail Servers

Mail for brainnote.app is handled by five mail servers, namely aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

brainnote.app shares at least some of its mail servers with other domains — for example ns500671.ns500742.ns500742.ns500671.ns500754.ns500671.ns500705.ns500705.ns500678.ns500688.ns500666.ns500131.lustychickser.com, graficaburo.com, ns500821.ns500821.ns500821.ns500821.ns500795.ns500795.ns500794.lustypartnersfinder.com and two more.

It is common for these mail servers to co-occur with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com as mail servers.

Hosts with two IP numbers each:

The A records for aspmx.l.google.com return 142.251.163.27 and 2607:f8b0:4004:c1d::1a.

The A records for alt1.aspmx.l.google.com return 108.177.123.27 and 2800:3f0:4003:c0f::1a.

The A records for alt2.aspmx.l.google.com return 172.253.116.27 and 2a00:1450:400b:c02::1b.

The A records for alt3.aspmx.l.google.com return 192.178.223.26 and 2a00:1450:4009:c0f::1b.

The A records for alt4.aspmx.l.google.com return 172.253.157.26 and 2a00:1450:400c:c23::1a.