stack-master.com - dns.ninja
stack-master.com
| DNSSEC | β οΈ Not signed | ||||||
| NS | ns-392.awsdns-49.com β | ||||||
| A | 2600:9000:5301:8800::1πΊπΈ Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-392.awsdns-49.com | ||||||
| A | 205.251.193.136πΊπΈ Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-392.awsdns-49.com | ||||||
| NS | ns-1384.awsdns-45.org | ||||||
| A | 2600:9000:5305:6800::1πΊπΈ Amazon2600:9000:5305::/48 - CloudFront | ||||||
| PTR | ns-1384.awsdns-45.org | ||||||
| A | 205.251.197.104πΊπΈ Amazon205.251.197.0/24 prefix | ||||||
| PTR | ns-1384.awsdns-45.org | ||||||
| NS | ns-1882.awsdns-43.co.uk | ||||||
| A | 2600:9000:5307:5a00::1πΊπΈ Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-1882.awsdns-43.co.uk | ||||||
| A | 205.251.199.90πΊπΈ Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-1882.awsdns-43.co.uk | ||||||
| NS | ns-659.awsdns-18.net | ||||||
| A | 2600:9000:5302:9300::1πΊπΈ Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-659.awsdns-18.net | ||||||
| A | 205.251.194.147πΊπΈ Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-659.awsdns-18.net | ||||||
| SOA | ns-392.awsdns-49.comawsdns-hostmaster@amazon.com serial=1 | ||||||
com
| DNSSEC | π Signed (DS record present) | ||||||
| NS | a.gtld-servers.net β | ||||||
| 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.netnstld@verisign-grs.com serial=1782097355 | ||||||
Same first word
stack-master.com |
DNS History
54 records (4 active, 50 former)
βNSns-1384.awsdns-45.org2026-03-16 β 2026-06-22 Β· 3 obs
β 2026-03-16 19:52:20
β 2026-06-22 03:14:48
βNSns-1882.awsdns-43.co.uk2026-03-16 β 2026-06-22 Β· 3 obs
β 2026-03-16 19:52:20
β 2026-06-22 03:14:48
βNSns-392.awsdns-49.com2026-03-16 β 2026-06-22 Β· 3 obs
β 2026-03-16 19:52:20
β 2026-06-22 03:14:48
βNSns-659.awsdns-18.net2026-03-16 β 2026-06-22 Β· 3 obs
β 2026-03-16 19:52:20
β 2026-06-22 03:14:48
βNSns13.domaincontrol.com2015-06-21 β 2017-10-16 Β· 4 obs
β 2017-10-16 22:24:22
β 2026-03-16 19:52:20
β 2026-06-22 03:14:48
βNSns14.domaincontrol.com2015-06-21 β 2017-10-16 Β· 4 obs
β 2017-10-16 22:24:22
β 2026-03-16 19:52:20
β 2026-06-22 03:14:48
βMXmailstore1.secureserver.net2015-06-21 β 2017-10-16 Β· 4 obs
β 2017-10-16 22:24:22
β 2026-03-16 19:52:20
β 2026-06-22 03:14:48
βMXsmtp.secureserver.net2015-06-21 β 2017-10-16 Β· 4 obs
β 2017-10-16 22:24:22
β 2026-03-16 19:52:20
β 2026-06-22 03:14:48
βA13.225.107.1232026-03-29 β 2026-03-29 Β· 4 obs
β 2026-03-29 11:16:22
β 2026-03-29 18:19:06
β 2026-06-22 03:14:48
βA13.225.107.1242026-03-29 β 2026-03-29 Β· 4 obs
β 2026-03-29 11:16:22
β 2026-03-29 18:19:06
β 2026-06-22 03:14:48
βA13.225.107.432026-03-29 β 2026-03-29 Β· 4 obs
β 2026-03-29 11:16:22
β 2026-03-29 18:19:06
β 2026-06-22 03:14:48
βA13.225.107.732026-03-29 β 2026-03-29 Β· 4 obs
β 2026-03-29 11:16:22
β 2026-03-29 18:19:06
β 2026-06-22 03:14:48
βA13.226.238.162026-03-16 β 2026-03-29 Β· 20 obs
β 2026-03-16 22:43:06
β 2026-03-17 03:19:58
β 2026-03-17 04:23:52
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-03-23 03:22:34
β 2026-03-23 18:23:20
β 2026-03-24 00:13:58
β 2026-03-24 02:32:02
β 2026-03-24 08:58:08
β 2026-03-24 16:01:46
β 2026-03-24 17:46:48
β 2026-03-26 14:03:40
β 2026-03-26 15:06:12
β 2026-03-26 18:07:40
β 2026-03-29 18:19:06
β 2026-03-29 20:46:36
β 2026-03-29 21:44:50
β 2026-06-22 03:14:48
βA13.226.238.322026-03-16 β 2026-03-29 Β· 20 obs
β 2026-03-16 22:43:06
β 2026-03-17 03:19:58
β 2026-03-17 04:23:52
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-03-23 03:22:34
β 2026-03-23 18:23:20
β 2026-03-24 00:13:58
β 2026-03-24 02:32:02
β 2026-03-24 08:58:08
β 2026-03-24 16:01:46
β 2026-03-24 17:46:48
β 2026-03-26 14:03:40
β 2026-03-26 15:06:12
β 2026-03-26 18:07:40
β 2026-03-29 18:19:06
β 2026-03-29 20:46:36
β 2026-03-29 21:44:50
β 2026-06-22 03:14:48
βA13.226.238.472026-03-16 β 2026-03-29 Β· 20 obs
β 2026-03-16 22:43:06
β 2026-03-17 03:19:58
β 2026-03-17 04:23:52
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-03-23 03:22:34
β 2026-03-23 18:23:20
β 2026-03-24 00:13:58
β 2026-03-24 02:32:02
β 2026-03-24 08:58:08
β 2026-03-24 16:01:46
β 2026-03-24 17:46:48
β 2026-03-26 14:03:40
β 2026-03-26 15:06:12
β 2026-03-26 18:07:40
β 2026-03-29 18:19:06
β 2026-03-29 20:46:36
β 2026-03-29 21:44:50
β 2026-06-22 03:14:48
βA13.226.238.842026-03-16 β 2026-03-29 Β· 20 obs
β 2026-03-16 22:43:06
β 2026-03-17 03:19:58
β 2026-03-17 04:23:52
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-03-23 03:22:34
β 2026-03-23 18:23:20
β 2026-03-24 00:13:58
β 2026-03-24 02:32:02
β 2026-03-24 08:58:08
β 2026-03-24 16:01:46
β 2026-03-24 17:46:48
β 2026-03-26 14:03:40
β 2026-03-26 15:06:12
β 2026-03-26 18:07:40
β 2026-03-29 18:19:06
β 2026-03-29 20:46:36
β 2026-03-29 21:44:50
β 2026-06-22 03:14:48
βA13.33.235.1102026-03-24 β 2026-03-26 Β· 9 obs
β 2026-03-24 21:47:54
β 2026-03-24 23:52:36
β 2026-03-25 00:56:14
β 2026-03-25 02:10:14
β 2026-03-26 03:25:42
β 2026-03-26 08:12:54
β 2026-03-26 13:31:58
β 2026-06-22 03:14:48
βA13.33.235.1192026-03-24 β 2026-03-26 Β· 9 obs
β 2026-03-24 21:47:54
β 2026-03-24 23:52:36
β 2026-03-25 00:56:14
β 2026-03-25 02:10:14
β 2026-03-26 03:25:42
β 2026-03-26 08:12:54
β 2026-03-26 13:31:58
β 2026-06-22 03:14:48
βA13.33.235.202026-03-24 β 2026-03-26 Β· 9 obs
β 2026-03-24 21:47:54
β 2026-03-24 23:52:36
β 2026-03-25 00:56:14
β 2026-03-25 02:10:14
β 2026-03-26 03:25:42
β 2026-03-26 08:12:54
β 2026-03-26 13:31:58
β 2026-06-22 03:14:48
βA13.33.235.302026-03-24 β 2026-03-26 Β· 9 obs
β 2026-03-24 21:47:54
β 2026-03-24 23:52:36
β 2026-03-25 00:56:14
β 2026-03-25 02:10:14
β 2026-03-26 03:25:42
β 2026-03-26 08:12:54
β 2026-03-26 13:31:58
β 2026-06-22 03:14:48
βA18.165.9.372026-03-21 β 2026-03-21 Β· 4 obs
β 2026-03-21 09:32:04
β 2026-03-21 11:19:18
β 2026-06-22 03:14:48
βA18.165.9.402026-03-21 β 2026-03-21 Β· 4 obs
β 2026-03-21 09:32:04
β 2026-03-21 11:19:18
β 2026-06-22 03:14:48
βA18.165.9.562026-03-21 β 2026-03-21 Β· 4 obs
β 2026-03-21 09:32:04
β 2026-03-21 11:19:18
β 2026-06-22 03:14:48
βA18.165.9.972026-03-21 β 2026-03-21 Β· 4 obs
β 2026-03-21 09:32:04
β 2026-03-21 11:19:18
β 2026-06-22 03:14:48
βA18.239.18.272026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 13:37:44
β 2026-03-22 17:58:04
β 2026-06-22 03:14:48
βA18.239.18.292026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 13:37:44
β 2026-03-22 17:58:04
β 2026-06-22 03:14:48
βA18.239.18.362026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 13:37:44
β 2026-03-22 17:58:04
β 2026-06-22 03:14:48
βA18.239.18.962026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 13:37:44
β 2026-03-22 17:58:04
β 2026-06-22 03:14:48
βA184.168.221.432016-11-27 β 2017-10-16 Β· 5 obs
β 2016-11-27 10:10:02
β 2017-10-16 22:24:22
β 2026-03-16 19:52:20
β 2026-06-22 03:14:48
βA3.166.65.1142026-03-16 β 2026-03-25 Β· 36 obs
β 2026-03-16 19:52:20
β 2026-03-16 22:43:06
β 2026-03-17 04:23:52
β 2026-03-17 12:32:40
β 2026-03-18 02:43:10
β 2026-03-18 10:29:26
β 2026-03-19 00:14:10
β 2026-03-19 01:33:10
β 2026-03-19 21:36:26
β 2026-03-20 01:23:00
β 2026-03-20 05:28:38
β 2026-03-20 08:08:22
β 2026-03-20 17:58:20
β 2026-03-21 03:47:20
β 2026-03-21 09:32:04
β 2026-03-21 11:19:18
β 2026-03-22 01:20:04
β 2026-03-22 13:37:44
β 2026-03-22 17:58:04
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-03-23 03:22:34
β 2026-03-23 18:23:20
β 2026-03-24 00:13:58
β 2026-03-24 02:32:02
β 2026-03-24 08:58:08
β 2026-03-24 16:01:46
β 2026-03-24 17:46:48
β 2026-03-24 21:47:54
β 2026-03-24 23:52:36
β 2026-03-25 00:56:14
β 2026-03-25 02:10:14
β 2026-03-25 15:31:14
β 2026-03-26 03:25:42
β 2026-06-22 03:14:48
βA3.166.65.1242026-03-16 β 2026-03-25 Β· 36 obs
β 2026-03-16 19:52:20
β 2026-03-16 22:43:06
β 2026-03-17 04:23:52
β 2026-03-17 12:32:40
β 2026-03-18 02:43:10
β 2026-03-18 10:29:26
β 2026-03-19 00:14:10
β 2026-03-19 01:33:10
β 2026-03-19 21:36:26
β 2026-03-20 01:23:00
β 2026-03-20 05:28:38
β 2026-03-20 08:08:22
β 2026-03-20 17:58:20
β 2026-03-21 03:47:20
β 2026-03-21 09:32:04
β 2026-03-21 11:19:18
β 2026-03-22 01:20:04
β 2026-03-22 13:37:44
β 2026-03-22 17:58:04
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-03-23 03:22:34
β 2026-03-23 18:23:20
β 2026-03-24 00:13:58
β 2026-03-24 02:32:02
β 2026-03-24 08:58:08
β 2026-03-24 16:01:46
β 2026-03-24 17:46:48
β 2026-03-24 21:47:54
β 2026-03-24 23:52:36
β 2026-03-25 00:56:14
β 2026-03-25 02:10:14
β 2026-03-25 15:31:14
β 2026-03-26 03:25:42
β 2026-06-22 03:14:48
βA3.166.65.292026-03-16 β 2026-03-25 Β· 36 obs
β 2026-03-16 19:52:20
β 2026-03-16 22:43:06
β 2026-03-17 04:23:52
β 2026-03-17 12:32:40
β 2026-03-18 02:43:10
β 2026-03-18 10:29:26
β 2026-03-19 00:14:10
β 2026-03-19 01:33:10
β 2026-03-19 21:36:26
β 2026-03-20 01:23:00
β 2026-03-20 05:28:38
β 2026-03-20 08:08:22
β 2026-03-20 17:58:20
β 2026-03-21 03:47:20
β 2026-03-21 09:32:04
β 2026-03-21 11:19:18
β 2026-03-22 01:20:04
β 2026-03-22 13:37:44
β 2026-03-22 17:58:04
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-03-23 03:22:34
β 2026-03-23 18:23:20
β 2026-03-24 00:13:58
β 2026-03-24 02:32:02
β 2026-03-24 08:58:08
β 2026-03-24 16:01:46
β 2026-03-24 17:46:48
β 2026-03-24 21:47:54
β 2026-03-24 23:52:36
β 2026-03-25 00:56:14
β 2026-03-25 02:10:14
β 2026-03-25 15:31:14
β 2026-03-26 03:25:42
β 2026-06-22 03:14:48
βA3.166.65.982026-03-16 β 2026-03-25 Β· 36 obs
β 2026-03-16 19:52:20
β 2026-03-16 22:43:06
β 2026-03-17 04:23:52
β 2026-03-17 12:32:40
β 2026-03-18 02:43:10
β 2026-03-18 10:29:26
β 2026-03-19 00:14:10
β 2026-03-19 01:33:10
β 2026-03-19 21:36:26
β 2026-03-20 01:23:00
β 2026-03-20 05:28:38
β 2026-03-20 08:08:22
β 2026-03-20 17:58:20
β 2026-03-21 03:47:20
β 2026-03-21 09:32:04
β 2026-03-21 11:19:18
β 2026-03-22 01:20:04
β 2026-03-22 13:37:44
β 2026-03-22 17:58:04
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-03-23 03:22:34
β 2026-03-23 18:23:20
β 2026-03-24 00:13:58
β 2026-03-24 02:32:02
β 2026-03-24 08:58:08
β 2026-03-24 16:01:46
β 2026-03-24 17:46:48
β 2026-03-24 21:47:54
β 2026-03-24 23:52:36
β 2026-03-25 00:56:14
β 2026-03-25 02:10:14
β 2026-03-25 15:31:14
β 2026-03-26 03:25:42
β 2026-06-22 03:14:48
βA3.169.231.222026-03-17 β 2026-03-20 Β· 12 obs
β 2026-03-17 04:23:52
β 2026-03-17 12:32:40
β 2026-03-18 10:29:26
β 2026-03-19 00:14:10
β 2026-03-19 01:33:10
β 2026-03-19 21:36:26
β 2026-03-20 01:23:00
β 2026-03-20 05:28:38
β 2026-03-20 08:08:22
β 2026-03-20 17:58:20
β 2026-06-22 03:14:48
βA3.169.231.662026-03-17 β 2026-03-20 Β· 12 obs
β 2026-03-17 04:23:52
β 2026-03-17 12:32:40
β 2026-03-18 10:29:26
β 2026-03-19 00:14:10
β 2026-03-19 01:33:10
β 2026-03-19 21:36:26
β 2026-03-20 01:23:00
β 2026-03-20 05:28:38
β 2026-03-20 08:08:22
β 2026-03-20 17:58:20
β 2026-06-22 03:14:48
βA3.169.231.722026-03-17 β 2026-03-20 Β· 12 obs
β 2026-03-17 04:23:52
β 2026-03-17 12:32:40
β 2026-03-18 10:29:26
β 2026-03-19 00:14:10
β 2026-03-19 01:33:10
β 2026-03-19 21:36:26
β 2026-03-20 01:23:00
β 2026-03-20 05:28:38
β 2026-03-20 08:08:22
β 2026-03-20 17:58:20
β 2026-06-22 03:14:48
βA3.169.231.962026-03-17 β 2026-03-20 Β· 12 obs
β 2026-03-17 04:23:52
β 2026-03-17 12:32:40
β 2026-03-18 10:29:26
β 2026-03-19 00:14:10
β 2026-03-19 01:33:10
β 2026-03-19 21:36:26
β 2026-03-20 01:23:00
β 2026-03-20 05:28:38
β 2026-03-20 08:08:22
β 2026-03-20 17:58:20
β 2026-06-22 03:14:48
βA3.174.18.552026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-06-22 03:14:48
βA3.174.18.642026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-06-22 03:14:48
βA3.174.18.722026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-06-22 03:14:48
βA3.174.18.932026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 19:21:28
β 2026-03-23 00:13:36
β 2026-06-22 03:14:48
βA50.63.202.362015-06-21 β 2016-04-14 Β· 4 obs
β 2016-04-14 14:53:30
β 2016-11-27 10:10:02
β 2026-06-22 03:14:48
βA52.222.177.1002026-03-18 β 2026-03-18 Β· 4 obs
β 2026-03-18 02:43:10
β 2026-03-18 10:29:26
β 2026-06-22 03:14:48
βA52.222.177.1032026-03-18 β 2026-03-18 Β· 4 obs
β 2026-03-18 02:43:10
β 2026-03-18 10:29:26
β 2026-06-22 03:14:48
βA52.222.177.1042026-03-18 β 2026-03-18 Β· 4 obs
β 2026-03-18 02:43:10
β 2026-03-18 10:29:26
β 2026-06-22 03:14:48
βA52.222.177.82026-03-18 β 2026-03-18 Β· 4 obs
β 2026-03-18 02:43:10
β 2026-03-18 10:29:26
β 2026-06-22 03:14:48
βA52.85.47.152026-03-26 β 2026-03-29 Β· 14 obs
β 2026-03-26 03:25:42
β 2026-03-26 08:12:54
β 2026-03-26 13:31:58
β 2026-03-26 14:03:40
β 2026-03-26 15:06:12
β 2026-03-26 18:07:40
β 2026-03-27 15:16:50
β 2026-03-29 11:16:22
β 2026-03-29 18:19:06
β 2026-03-29 20:46:36
β 2026-03-29 21:44:50
β 2026-03-30 00:14:38
β 2026-06-22 03:14:48
βA52.85.47.582026-03-26 β 2026-03-29 Β· 14 obs
β 2026-03-26 03:25:42
β 2026-03-26 08:12:54
β 2026-03-26 13:31:58
β 2026-03-26 14:03:40
β 2026-03-26 15:06:12
β 2026-03-26 18:07:40
β 2026-03-27 15:16:50
β 2026-03-29 11:16:22
β 2026-03-29 18:19:06
β 2026-03-29 20:46:36
β 2026-03-29 21:44:50
β 2026-03-30 00:14:38
β 2026-06-22 03:14:48
βA52.85.47.842026-03-26 β 2026-03-29 Β· 14 obs
β 2026-03-26 03:25:42
β 2026-03-26 08:12:54
β 2026-03-26 13:31:58
β 2026-03-26 14:03:40
β 2026-03-26 15:06:12
β 2026-03-26 18:07:40
β 2026-03-27 15:16:50
β 2026-03-29 11:16:22
β 2026-03-29 18:19:06
β 2026-03-29 20:46:36
β 2026-03-29 21:44:50
β 2026-03-30 00:14:38
β 2026-06-22 03:14:48
βA52.85.47.92026-03-26 β 2026-03-29 Β· 14 obs
β 2026-03-26 03:25:42
β 2026-03-26 08:12:54
β 2026-03-26 13:31:58
β 2026-03-26 14:03:40
β 2026-03-26 15:06:12
β 2026-03-26 18:07:40
β 2026-03-27 15:16:50
β 2026-03-29 11:16:22
β 2026-03-29 18:19:06
β 2026-03-29 20:46:36
β 2026-03-29 21:44:50
β 2026-03-30 00:14:38
β 2026-06-22 03:14:48
βA54.230.114.1262026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 01:20:04
β 2026-03-22 13:37:44
β 2026-06-22 03:14:48
βA54.230.114.462026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 01:20:04
β 2026-03-22 13:37:44
β 2026-06-22 03:14:48
βA54.230.114.612026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 01:20:04
β 2026-03-22 13:37:44
β 2026-06-22 03:14:48
βA54.230.114.92026-03-22 β 2026-03-22 Β· 4 obs
β 2026-03-22 01:20:04
β 2026-03-22 13:37:44
β 2026-06-22 03:14:48
π DNS Trace
π Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| stack-master.com | ns-659.awsdns-18.net, ns-392.awsdns-49.com, ns-1882.awsdns-43.co.uk, ns-1384.awsdns-45.org | 2 records |
β Authoritative Response
Server:205.251.194.147
NS records: ns-659.awsdns-18.net, ns-392.awsdns-49.com, ns-1882.awsdns-43.co.uk, ns-1384.awsdns-45.org
π DNSSEC Status
β οΈ Insecure (no DNSSEC)
No DS record for stack-master.com (unsigned zone)
β±οΈ Timing
Total: 868ms | Queries: -
π Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns-1384.awsdns-45.org, ns-1882.awsdns-43.co.uk... |
| SOA | 1 | ns-392.awsdns-49.com awsdns-hostmaster.a |
π Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-392.awsdns-49.com, ns-392.awsdns-49.com)
Analysis
Name Servers
The domain stack-master.com is delegated to these four name servers: ns-392.awsdns-49.com, ns-659.awsdns-18.net, ns-1384.awsdns-45.org and ns-1882.awsdns-43.co.uk.
There is at least partial name server overlap between stack-master.com and other domains β dokterfinn.nl, onskyviewcrm.com, 180.17.12.in-addr.arpa and two more among them.
All four hostnames β ns-392.awsdns-49.com, ns-659.awsdns-18.net, ns-1384.awsdns-45.org and ns-1882.awsdns-43.co.uk β resolve to two IP numbers apiece: ns-392.awsdns-49.com to 205.251.193.136 and 2600:9000:5301:8800::1; ns-659.awsdns-18.net to 205.251.194.147 and 2600:9000:5302:9300::1; ns-1384.awsdns-45.org to 205.251.197.104 and 2600:9000:5305:6800::1; ns-1882.awsdns-43.co.uk to 205.251.199.90 and 2600:9000:5307:5a00::1.