opus1dev.io - dns.ninja

`opus1dev.io`

DNSSEC	⚠️ Not signed
A	99.84.132.55^{🇺🇸 Amazon99.84.132.0/24}
		PTR	`server-99-84-132-55.atl59.r.cloudfront.net`
A	99.84.132.62^{🇺🇸 Amazon99.84.132.0/24}
A	99.84.132.103^{🇺🇸 Amazon99.84.132.0/24}
A	99.84.132.126^{🇺🇸 Amazon99.84.132.0/24}
NS	`ns-2029.awsdns-61.co.uk` ⭐
		A	2600:9000:5307:ed00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-2029.awsdns-61.co.uk`
		A	205.251.199.237^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-2029.awsdns-61.co.uk`
NS	`ns-1025.awsdns-00.org`
		A	2600:9000:5304:100::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1025.awsdns-00.org`
		A	205.251.196.1^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1025.awsdns-00.org`
NS	`ns-431.awsdns-53.com`
		A	2600:9000:5301:af00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-431.awsdns-53.com`
		A	205.251.193.175^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-431.awsdns-53.com`
NS	`ns-618.awsdns-13.net`
		A	2600:9000:5302:6a00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-618.awsdns-13.net`
		A	205.251.194.106^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-618.awsdns-13.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1b::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`wv-in-f26.1e100.net`
		A	142.251.167.26^{🇺🇸 Google142.251.167.0/24}
			PTR	`ww-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 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::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	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.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=RNG_0px9OI8ZSZUaOuK5LOuvh7HKy13h0b5pU5LlpfE`
TXT	`google-site-verification=g1sANIh9oci936XvOA64yLYCrcRol9axT7TOH-8nnts`
SOA	`ns-2029.awsdns-61.co.uk`awsdns-hostmaster@amazon.com serial=1

`io`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.io` ⭐
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`
	SOA	`a0.nic.io`hostmaster@donuts.email serial=1782375169

Same first word

opus1dev.io

Similar names

sudevop1.github.io

DNS History

73 records (13 active, 60 former)

●NSns-1025.awsdns-00.org2026-02-15 → 2026-06-25 · 2 obs

● 2026-02-15 02:28:44
● 2026-06-25 08:39:58

●NSns-2029.awsdns-61.co.uk2026-02-15 → 2026-06-25 · 2 obs

● 2026-02-15 02:28:44
● 2026-06-25 08:39:58

●NSns-431.awsdns-53.com2026-02-15 → 2026-06-25 · 2 obs

● 2026-02-15 02:28:44
● 2026-06-25 08:39:58

●NSns-618.awsdns-13.net2026-02-15 → 2026-06-25 · 2 obs

● 2026-02-15 02:28:44
● 2026-06-25 08:39:58

●MXalt1.aspmx.l.google.com2026-02-15 → 2026-06-25 · 5 obs

● 2026-02-15 02:28:44
● 2026-06-11 07:46:42
○ 2026-06-11 09:38:00
● 2026-06-11 15:48:38
● 2026-06-25 08:39:58

●MXalt2.aspmx.l.google.com2026-02-15 → 2026-06-25 · 5 obs

● 2026-02-15 02:28:44
● 2026-06-11 07:46:42
○ 2026-06-11 09:38:00
● 2026-06-11 15:48:38
● 2026-06-25 08:39:58

●MXalt3.aspmx.l.google.com2026-02-15 → 2026-06-25 · 5 obs

● 2026-02-15 02:28:44
● 2026-06-11 07:46:42
○ 2026-06-11 09:38:00
● 2026-06-11 15:48:38
● 2026-06-25 08:39:58

●MXalt4.aspmx.l.google.com2026-02-15 → 2026-06-25 · 5 obs

● 2026-02-15 02:28:44
● 2026-06-11 07:46:42
○ 2026-06-11 09:38:00
● 2026-06-11 15:48:38
● 2026-06-25 08:39:58

●MXaspmx.l.google.com2026-02-15 → 2026-06-25 · 5 obs

● 2026-02-15 02:28:44
● 2026-06-11 07:46:42
○ 2026-06-11 09:38:00
● 2026-06-11 15:48:38
● 2026-06-25 08:39:58

○A108.138.85.1182026-03-01 → 2026-03-01 · 4 obs

○ 2026-02-28 00:36:48
● 2026-03-01 11:50:58
○ 2026-03-01 15:27:30
○ 2026-06-25 08:39:58

○A108.138.85.182026-03-01 → 2026-03-01 · 4 obs

○ 2026-02-28 00:36:48
● 2026-03-01 11:50:58
○ 2026-03-01 15:27:30
○ 2026-06-25 08:39:58

○A108.138.85.42026-03-01 → 2026-03-01 · 4 obs

○ 2026-02-28 00:36:48
● 2026-03-01 11:50:58
○ 2026-03-01 15:27:30
○ 2026-06-25 08:39:58

○A108.138.85.462026-03-01 → 2026-03-01 · 4 obs

○ 2026-02-28 00:36:48
● 2026-03-01 11:50:58
○ 2026-03-01 15:27:30
○ 2026-06-25 08:39:58

○A108.139.113.1282026-04-08 → 2026-04-18 · 17 obs

○ 2026-04-07 13:49:14
● 2026-04-08 05:44:36
○ 2026-04-08 07:53:54
○ 2026-04-09 01:37:48
● 2026-04-09 06:18:54
● 2026-04-09 11:08:58
○ 2026-04-10 00:16:44
● 2026-04-10 02:44:08
○ 2026-04-10 06:57:36
○ 2026-04-12 01:58:10
● 2026-04-12 10:08:52
○ 2026-04-12 11:39:46
○ 2026-04-18 00:31:34
● 2026-04-18 12:00:22
● 2026-04-18 14:50:42
○ 2026-04-18 18:54:38
○ 2026-06-25 08:39:58

○A108.139.113.1292026-04-08 → 2026-04-18 · 17 obs

○A108.139.113.752026-04-08 → 2026-04-18 · 17 obs

○A108.139.113.832026-04-08 → 2026-04-18 · 17 obs

○A13.226.144.1022026-02-21 → 2026-06-25 · 47 obs

○ 2026-02-20 17:09:46
● 2026-02-21 14:00:14
● 2026-02-21 15:06:12
○ 2026-02-21 17:45:56
● 2026-02-22 02:51:50
● 2026-03-11 14:53:04
○ 2026-03-12 14:34:36
○ 2026-03-16 13:39:30
● 2026-03-18 05:12:20
● 2026-04-26 01:38:22
○ 2026-04-26 14:28:12
○ 2026-05-06 01:04:22
● 2026-05-06 07:39:32
● 2026-05-15 19:15:46
○ 2026-05-15 22:43:16
○ 2026-06-11 09:38:00
● 2026-06-11 15:48:38
● 2026-06-17 16:58:18
○ 2026-06-18 19:38:34
○ 2026-06-21 00:16:40
● 2026-06-21 02:49:50
○ 2026-06-21 08:16:52
● 2026-06-21 12:35:20
○ 2026-06-21 16:16:22
● 2026-06-21 18:11:08
○ 2026-06-21 20:15:16
● 2026-06-21 20:51:32
○ 2026-06-22 00:15:32
● 2026-06-22 10:34:20
○ 2026-06-22 12:15:18
● 2026-06-22 17:07:44
○ 2026-06-22 19:41:30
● 2026-06-22 20:27:16
○ 2026-06-23 00:15:42
● 2026-06-23 02:41:12
○ 2026-06-23 04:15:12
● 2026-06-24 02:41:26
○ 2026-06-24 08:16:10
● 2026-06-24 13:34:42
○ 2026-06-24 15:48:20
● 2026-06-24 18:04:08
○ 2026-06-25 00:16:36
● 2026-06-25 01:25:56
○ 2026-06-25 03:34:58
● 2026-06-25 05:44:38
○ 2026-06-25 08:16:22
○ 2026-06-25 08:39:58

○A13.226.144.1182026-02-21 → 2026-06-25 · 47 obs

○A13.226.144.192026-02-21 → 2026-06-25 · 47 obs

○A13.226.144.912026-02-21 → 2026-06-25 · 47 obs

○A13.227.207.1022026-03-28 → 2026-06-15 · 25 obs

○ 2026-03-24 01:39:58
● 2026-03-28 17:45:46
● 2026-03-29 00:46:04
○ 2026-03-29 01:54:50
○ 2026-04-07 10:37:42
● 2026-04-07 13:49:14
○ 2026-04-08 21:37:42
○ 2026-05-19 23:27:36
● 2026-05-21 09:53:06
○ 2026-05-21 12:00:44
○ 2026-05-29 02:02:10
● 2026-05-30 07:43:04
○ 2026-05-31 07:03:36
● 2026-06-01 03:44:26
○ 2026-06-01 18:17:22
○ 2026-06-03 19:45:56
● 2026-06-06 15:35:38
○ 2026-06-07 05:32:50
○ 2026-06-08 08:05:10
● 2026-06-08 23:08:12
○ 2026-06-10 01:45:26
○ 2026-06-15 15:02:42
● 2026-06-15 15:55:56
○ 2026-06-15 17:39:18
○ 2026-06-25 08:39:58

○A13.227.207.172026-03-28 → 2026-06-15 · 25 obs

○A13.227.207.192026-03-28 → 2026-06-15 · 25 obs

○A13.227.207.922026-03-28 → 2026-06-15 · 25 obs

○A13.227.87.1022026-05-27 → 2026-05-27 · 4 obs

○ 2026-05-26 10:10:46
● 2026-05-27 06:46:26
○ 2026-05-28 04:07:52
○ 2026-06-25 08:39:58

○A13.227.87.132026-05-27 → 2026-05-27 · 4 obs

○ 2026-05-26 10:10:46
● 2026-05-27 06:46:26
○ 2026-05-28 04:07:52
○ 2026-06-25 08:39:58

○A13.227.87.512026-05-27 → 2026-05-27 · 4 obs

○ 2026-05-26 10:10:46
● 2026-05-27 06:46:26
○ 2026-05-28 04:07:52
○ 2026-06-25 08:39:58

○A13.227.87.922026-05-27 → 2026-05-27 · 4 obs

○ 2026-05-26 10:10:46
● 2026-05-27 06:46:26
○ 2026-05-28 04:07:52
○ 2026-06-25 08:39:58

○A13.33.109.182026-05-14 → 2026-05-17 · 9 obs

○ 2026-05-10 04:45:52
● 2026-05-14 18:23:42
○ 2026-05-15 02:49:36
○ 2026-05-16 19:54:36
● 2026-05-17 03:33:02
○ 2026-05-17 07:25:12
● 2026-05-17 09:14:16
○ 2026-05-17 10:25:56
○ 2026-06-25 08:39:58

○A13.33.109.572026-05-14 → 2026-05-17 · 9 obs

○A13.33.109.622026-05-14 → 2026-05-17 · 9 obs

○A13.33.109.972026-05-14 → 2026-05-17 · 9 obs

○A13.33.82.1002026-04-25 → 2026-05-04 · 17 obs

○ 2026-04-18 18:54:38
● 2026-04-25 09:58:20
● 2026-04-25 12:23:38
○ 2026-04-25 17:13:50
○ 2026-04-28 15:00:00
● 2026-04-29 00:59:16
○ 2026-04-29 01:57:36
○ 2026-05-01 10:09:04
● 2026-05-01 15:46:10
○ 2026-05-01 18:10:26
○ 2026-05-03 23:53:38
● 2026-05-04 00:31:46
○ 2026-05-04 06:11:42
○ 2026-05-04 07:24:18
● 2026-05-04 08:42:38
○ 2026-05-04 13:37:36
○ 2026-06-25 08:39:58

○A13.33.82.1042026-04-25 → 2026-05-04 · 17 obs

○A13.33.82.402026-04-25 → 2026-05-04 · 17 obs

○A13.33.82.782026-04-25 → 2026-05-04 · 17 obs

○A18.161.205.1292026-03-30 → 2026-05-10 · 10 obs

○ 2026-03-29 01:54:50
● 2026-03-30 15:25:32
○ 2026-03-31 02:13:02
○ 2026-05-05 22:55:44
● 2026-05-06 01:04:22
○ 2026-05-06 07:39:32
○ 2026-05-10 00:33:32
● 2026-05-10 01:35:22
○ 2026-05-10 04:45:52
○ 2026-06-25 08:39:58

○A18.161.205.352026-03-30 → 2026-05-10 · 10 obs

○A18.161.205.722026-03-30 → 2026-05-10 · 10 obs

○A18.161.205.932026-03-30 → 2026-05-10 · 10 obs

○A18.164.144.152026-06-01 → 2026-06-02 · 8 obs

○ 2026-06-01 03:44:26
● 2026-06-01 18:17:22
● 2026-06-02 05:45:02
○ 2026-06-02 06:18:32
○ 2026-06-02 11:26:04
● 2026-06-02 13:06:14
○ 2026-06-03 01:18:56
○ 2026-06-25 08:39:58

○A18.164.144.522026-06-01 → 2026-06-02 · 8 obs

○ 2026-06-01 03:44:26
● 2026-06-01 18:17:22
● 2026-06-02 05:45:02
○ 2026-06-02 06:18:32
○ 2026-06-02 11:26:04
● 2026-06-02 13:06:14
○ 2026-06-03 01:18:56
○ 2026-06-25 08:39:58

○A18.164.144.642026-06-01 → 2026-06-02 · 8 obs

○ 2026-06-01 03:44:26
● 2026-06-01 18:17:22
● 2026-06-02 05:45:02
○ 2026-06-02 06:18:32
○ 2026-06-02 11:26:04
● 2026-06-02 13:06:14
○ 2026-06-03 01:18:56
○ 2026-06-25 08:39:58

○A18.164.144.652026-06-01 → 2026-06-02 · 8 obs

○ 2026-06-01 03:44:26
● 2026-06-01 18:17:22
● 2026-06-02 05:45:02
○ 2026-06-02 06:18:32
○ 2026-06-02 11:26:04
● 2026-06-02 13:06:14
○ 2026-06-03 01:18:56
○ 2026-06-25 08:39:58

○A18.239.236.1022026-04-27 → 2026-06-10 · 24 obs

○ 2026-04-26 14:28:12
● 2026-04-27 15:48:28
● 2026-04-28 15:00:00
○ 2026-04-29 00:59:16
● 2026-04-29 01:57:36
● 2026-05-03 22:58:50
○ 2026-05-04 08:42:38
● 2026-05-04 13:37:36
● 2026-05-04 22:18:32
○ 2026-05-05 03:48:08
● 2026-05-05 12:01:38
○ 2026-05-05 15:43:28
○ 2026-05-15 19:15:46
● 2026-05-15 22:43:16
● 2026-05-19 03:42:54
○ 2026-05-19 23:27:36
○ 2026-06-08 23:08:12
● 2026-06-10 01:45:26
○ 2026-06-10 06:39:32
○ 2026-06-10 14:00:06
● 2026-06-10 14:37:30
● 2026-06-10 20:51:20
○ 2026-06-11 01:21:08
○ 2026-06-25 08:39:58

○A18.239.236.512026-04-27 → 2026-06-10 · 24 obs

○A18.239.236.582026-04-27 → 2026-06-10 · 24 obs

○A18.239.236.732026-04-27 → 2026-06-10 · 24 obs

○A18.65.3.122026-02-15 → 2026-03-19 · 22 obs

● 2026-02-15 02:28:44
● 2026-02-17 11:29:30
○ 2026-02-18 00:08:14
○ 2026-03-04 03:14:14
● 2026-03-05 04:04:06
○ 2026-03-05 06:39:36
○ 2026-03-08 07:02:30
● 2026-03-09 01:47:48
○ 2026-03-09 03:21:18
○ 2026-03-11 14:53:04
● 2026-03-12 14:34:36
○ 2026-03-13 02:06:10
○ 2026-03-13 15:55:52
● 2026-03-14 01:28:44
● 2026-03-16 10:02:52
○ 2026-03-17 01:33:46
● 2026-03-17 20:14:18
● 2026-03-18 02:28:56
○ 2026-03-18 05:12:20
● 2026-03-19 00:06:32
○ 2026-03-19 01:40:48
○ 2026-06-25 08:39:58

○A18.65.3.132026-02-15 → 2026-03-19 · 22 obs

○A18.65.3.562026-02-15 → 2026-03-19 · 22 obs

○A18.65.3.992026-02-15 → 2026-03-19 · 22 obs

○A3.171.22.1052026-05-19 → 2026-06-08 · 25 obs

○ 2026-05-19 03:42:54
● 2026-05-19 23:27:36
○ 2026-05-21 09:53:06
● 2026-05-21 12:00:44
○ 2026-05-21 12:42:20
● 2026-05-21 22:34:58
● 2026-05-24 13:37:02
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● 2026-05-26 10:10:46
○ 2026-05-27 06:46:26
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○ 2026-06-03 01:18:56
● 2026-06-03 19:45:56
○ 2026-06-06 15:35:38
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● 2026-06-07 05:32:50
● 2026-06-08 08:05:10
○ 2026-06-08 14:54:22
○ 2026-06-25 08:39:58

○A3.171.22.1282026-05-19 → 2026-06-08 · 25 obs

○A3.171.22.652026-05-19 → 2026-06-08 · 25 obs

○A3.171.22.972026-05-19 → 2026-06-08 · 25 obs

○A3.171.38.1032026-02-18 → 2026-06-23 · 31 obs

○ 2026-02-15 02:28:44
○ 2026-02-17 11:29:30
● 2026-02-18 00:08:14
● 2026-02-20 17:09:46
○ 2026-02-21 14:00:14
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● 2026-02-27 14:29:18
○ 2026-02-28 00:36:48
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● 2026-03-06 08:53:24
○ 2026-03-06 21:25:32
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● 2026-03-19 13:02:14
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● 2026-06-19 13:19:10
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● 2026-06-23 14:13:24
○ 2026-06-23 18:49:10
○ 2026-06-25 08:39:58

○A3.171.38.472026-02-18 → 2026-06-23 · 31 obs

○A3.171.38.642026-02-18 → 2026-06-23 · 31 obs

○A3.171.38.902026-02-18 → 2026-06-23 · 31 obs

○A52.85.78.1292026-06-21 → 2026-06-21 · 4 obs

○ 2026-06-21 12:35:20
● 2026-06-21 16:16:22
○ 2026-06-21 18:11:08
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○A52.85.78.402026-06-21 → 2026-06-21 · 4 obs

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○A52.85.78.442026-06-21 → 2026-06-21 · 4 obs

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○A52.85.78.982026-06-21 → 2026-06-21 · 4 obs

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●A99.84.132.1032026-03-31 → 2026-06-25 · 40 obs

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●A99.84.132.1262026-03-31 → 2026-06-25 · 40 obs

●A99.84.132.552026-03-31 → 2026-06-25 · 40 obs

●A99.84.132.622026-03-31 → 2026-06-25 · 40 obs

○A99.86.20.1072026-06-01 → 2026-06-01 · 4 obs

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○A99.86.20.1292026-06-01 → 2026-06-01 · 4 obs

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○A99.86.20.602026-06-01 → 2026-06-01 · 4 obs

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● 2026-06-01 01:14:02
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○A99.86.20.92026-06-01 → 2026-06-01 · 4 obs

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🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	c0.nic.io, b0.nic.io, a0.nic.io, a2.nic.io	-
opus1dev.io	ns-431.awsdns-53.com, ns-2029.awsdns-61.co.uk, ns-1025.awsdns-00.org, ns-618.awsdns-13.net	-

✅ Authoritative Response

Server:205.251.194.106

NS records: ns-431.awsdns-53.com, ns-2029.awsdns-61.co.uk, ns-1025.awsdns-00.org, ns-618.awsdns-13.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opus1dev.io (unsigned zone)

⏱️ Timing

Total: 570ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.171.38.90, 3.171.38.47...`
NS	4	`ns-1025.awsdns-00.org, ns-2029.awsdns-61.co.uk...`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=RNG_0px9OI8ZSZU, google-site-verification=g1sANIh9oci936X`
SOA	1	`ns-2029.awsdns-61.co.uk awsdns-hostmaste`

Analysis

IP Addresses

opus1dev.io points to the four IP addresses 99.84.132.55, 99.84.132.62, 99.84.132.103 and 99.84.132.126.

Among the host names that share IP numbers with opus1dev.io are hr.totalpass.com, innercloud.io, www.frauen40plus.com and two others.

Name Servers

The domain opus1dev.io is delegated to these four name servers: ns-431.awsdns-53.com, ns-618.awsdns-13.net, ns-1025.awsdns-00.org and ns-2029.awsdns-61.co.uk.

The name servers of opus1dev.io overlap at least partially with those of other domains — among them dzvq0x2dqwx4u.cloudfront.net, tsensor.cl, jewellerina.com and two more.

Each of the four hosts ns-431.awsdns-53.com, ns-618.awsdns-13.net, ns-1025.awsdns-00.org and ns-2029.awsdns-61.co.uk has two IP addresses. ns-431.awsdns-53.com points to 205.251.193.175 and 2600:9000:5301:af00::1. ns-618.awsdns-13.net points to 205.251.194.106 and 2600:9000:5302:6a00::1. ns-1025.awsdns-00.org points to 205.251.196.1 and 2600:9000:5304:100::1. ns-2029.awsdns-61.co.uk points to 205.251.199.237 and 2600:9000:5307:ed00::1.

Mail Servers

opus1dev.io has five mail servers, which are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

opus1dev.io shares at least some of its mail servers with other domains — for example bocatime.com, mmosale.ru, fulloutproductions.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:

aspmx.l.google.com resolves to 142.251.167.26 and 2607:f8b0:4004:c1b::1a.

alt1.aspmx.l.google.com resolves to 108.177.123.26 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com resolves to 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com resolves to 172.253.157.26 and 2a00:1450:400c:c23::1a.