programmingmobile.com - robtex.com
programmingmobile.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::6815:3ecc🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3034::ac43:8b3d🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.62.204Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.139.61🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | cris.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::a29f:2cca🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cris.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c3ca🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | cris.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:23ca🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | cris.ns.cloudflare.com | ||||||
| A | 108.162.195.202🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cris.ns.cloudflare.com | ||||||
| A | 162.159.44.202Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cris.ns.cloudflare.com | ||||||
| A | 172.64.35.202🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cris.ns.cloudflare.com | ||||||
| NS | naya.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:26f2🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | naya.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2f2🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | naya.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22f2🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | naya.ns.cloudflare.com | ||||||
| A | 108.162.194.242🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | naya.ns.cloudflare.com | ||||||
| A | 162.159.38.242Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | naya.ns.cloudflare.com | ||||||
| A | 172.64.34.242🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | naya.ns.cloudflare.com | ||||||
| MX | mx1-hosting.jellyfish.systems ⭐ | ||||||
| A | 162.255.118.28🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES | ||||||
| PTR | oxse3a.privateemail.com | ||||||
| MX | mx2-hosting.jellyfish.systems(10) | ||||||
| A | 162.255.118.29🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES | ||||||
| PTR | oxse2b.privateemail.com | ||||||
| MX | mx3-hosting.jellyfish.systems(20) | ||||||
| A | 162.255.118.13🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES | ||||||
| PTR | mx3-hosting.jellyfish.systems | ||||||
| TXT | v=spf1 +a +mx +ip4:162.0.232.220 include:spf.web-hosting.com ~all | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.62.204, 172.67.139.61 | ||||||
| IPv6 hints | 2606:4700:3030::6815:3ecc, 2606:4700:3034::ac43:8b3d | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=94, name=cloudflare-ech.com | ||||||
| SOA | cris.ns.cloudflare.comdns@cloudflare.com serial=2407642250 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| 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=1783702677 | ||||||
Subdomains
www.programmingmobile.com |
Same first word
programmingmobile.com |
Similar names
mobileprogramming.biz |
mobileprogramming.com |
mobileprogramming.mobi |
mobileprogramming.co.in |
mobileprogramming.co |
mobileprogramming.us |
mobileprogramming.in |
mobileprogramming.me |
mobileprogramming.net |
DNS History
31 records (9 active, 22 former)
●NScris.ns.cloudflare.com2026-02-16 → 2026-07-10 · 3 obs
○ 2017-05-31 05:04:16
● 2026-02-16 08:00:10
● 2026-07-10 17:20:50
● 2026-02-16 08:00:10
● 2026-07-10 17:20:50
●NSnaya.ns.cloudflare.com2026-02-16 → 2026-07-10 · 3 obs
○ 2017-05-31 05:04:16
● 2026-02-16 08:00:10
● 2026-07-10 17:20:50
● 2026-02-16 08:00:10
● 2026-07-10 17:20:50
○NSns1.brainydns.com2015-05-08 → 2017-05-31 · 8 obs
● 2015-05-08 13:17:30
○ 2015-10-28 13:34:20
● 2016-01-04 11:34:22
○ 2016-04-08 13:21:16
○ 2016-09-15 01:21:20
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
○ 2015-10-28 13:34:20
● 2016-01-04 11:34:22
○ 2016-04-08 13:21:16
○ 2016-09-15 01:21:20
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
○NSns1.kirklanddc.com2016-04-08 → 2016-09-15 · 5 obs
○ 2016-01-04 11:34:22
● 2016-04-08 13:21:16
● 2016-09-15 01:21:20
○ 2017-05-31 05:04:16
○ 2026-07-10 17:20:50
● 2016-04-08 13:21:16
● 2016-09-15 01:21:20
○ 2017-05-31 05:04:16
○ 2026-07-10 17:20:50
○NSns1.programmingmobile.com2015-10-28 → 2015-10-28 · 4 obs
○ 2015-05-08 13:17:30
● 2015-10-28 13:34:20
○ 2016-01-04 11:34:22
○ 2026-07-10 17:20:50
● 2015-10-28 13:34:20
○ 2016-01-04 11:34:22
○ 2026-07-10 17:20:50
○NSns1.quokkadns.com2017-05-31 → 2017-05-31 · 4 obs
○ 2016-09-15 01:21:20
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
○NSns2.brainydns.com2015-05-08 → 2017-05-31 · 8 obs
● 2015-05-08 13:17:30
○ 2015-10-28 13:34:20
● 2016-01-04 11:34:22
○ 2016-04-08 13:21:16
○ 2016-09-15 01:21:20
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
○ 2015-10-28 13:34:20
● 2016-01-04 11:34:22
○ 2016-04-08 13:21:16
○ 2016-09-15 01:21:20
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
○NSns2.kirklanddc.com2016-04-08 → 2016-09-15 · 5 obs
○ 2016-01-04 11:34:22
● 2016-04-08 13:21:16
● 2016-09-15 01:21:20
○ 2017-05-31 05:04:16
○ 2026-07-10 17:20:50
● 2016-04-08 13:21:16
● 2016-09-15 01:21:20
○ 2017-05-31 05:04:16
○ 2026-07-10 17:20:50
●MXmx1-hosting.jellyfish.systems2026-02-16 → 2026-07-10 · 2 obs
● 2026-02-16 08:00:10
● 2026-07-10 17:20:50
● 2026-07-10 17:20:50
●MXmx2-hosting.jellyfish.systems2026-02-16 → 2026-07-10 · 2 obs
● 2026-02-16 08:00:10
● 2026-07-10 17:20:50
● 2026-07-10 17:20:50
●MXmx3-hosting.jellyfish.systems2026-02-16 → 2026-07-10 · 2 obs
● 2026-02-16 08:00:10
● 2026-07-10 17:20:50
● 2026-07-10 17:20:50
●A104.21.62.2042026-02-16 → 2026-07-10 · 14 obs
○ 2017-05-31 05:04:16
● 2026-02-16 08:00:10
● 2026-03-07 08:03:40
○ 2026-03-10 04:39:10
○ 2026-03-15 11:38:46
● 2026-03-26 12:01:58
● 2026-04-01 23:43:44
○ 2026-04-05 13:37:12
○ 2026-04-09 07:16:10
● 2026-04-24 01:40:56
● 2026-05-19 02:21:42
○ 2026-05-22 07:24:40
● 2026-05-22 10:31:24
● 2026-07-10 17:20:50
● 2026-02-16 08:00:10
● 2026-03-07 08:03:40
○ 2026-03-10 04:39:10
○ 2026-03-15 11:38:46
● 2026-03-26 12:01:58
● 2026-04-01 23:43:44
○ 2026-04-05 13:37:12
○ 2026-04-09 07:16:10
● 2026-04-24 01:40:56
● 2026-05-19 02:21:42
○ 2026-05-22 07:24:40
● 2026-05-22 10:31:24
● 2026-07-10 17:20:50
○A109.201.135.342016-09-15 → 2016-09-15 · 4 obs
○ 2016-04-08 13:21:16
● 2016-09-15 01:21:20
○ 2017-05-31 05:04:16
○ 2026-07-10 17:20:50
● 2016-09-15 01:21:20
○ 2017-05-31 05:04:16
○ 2026-07-10 17:20:50
○A149.202.120.412017-05-31 → 2017-05-31 · 4 obs
○ 2016-09-15 01:21:20
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
○A158.69.143.1042017-05-31 → 2017-05-31 · 4 obs
○ 2016-09-15 01:21:20
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
○A158.69.143.972016-04-08 → 2016-04-08 · 4 obs
○ 2016-01-04 11:34:22
● 2016-04-08 13:21:16
○ 2016-09-15 01:21:20
○ 2026-07-10 17:20:50
● 2016-04-08 13:21:16
○ 2016-09-15 01:21:20
○ 2026-07-10 17:20:50
○A158.69.145.482017-05-31 → 2017-05-31 · 4 obs
○ 2016-09-15 01:21:20
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
○A172.64.80.12026-05-22 → 2026-05-22 · 4 obs
○ 2026-05-19 02:21:42
● 2026-05-22 07:24:40
○ 2026-05-22 10:31:24
○ 2026-07-10 17:20:50
● 2026-05-22 07:24:40
○ 2026-05-22 10:31:24
○ 2026-07-10 17:20:50
●A172.67.139.612026-02-16 → 2026-07-10 · 14 obs
○ 2017-05-31 05:04:16
● 2026-02-16 08:00:10
● 2026-03-07 08:03:40
○ 2026-03-10 04:39:10
○ 2026-03-15 11:38:46
● 2026-03-26 12:01:58
● 2026-04-01 23:43:44
○ 2026-04-05 13:37:12
○ 2026-04-09 07:16:10
● 2026-04-24 01:40:56
● 2026-05-19 02:21:42
○ 2026-05-22 07:24:40
● 2026-05-22 10:31:24
● 2026-07-10 17:20:50
● 2026-02-16 08:00:10
● 2026-03-07 08:03:40
○ 2026-03-10 04:39:10
○ 2026-03-15 11:38:46
● 2026-03-26 12:01:58
● 2026-04-01 23:43:44
○ 2026-04-05 13:37:12
○ 2026-04-09 07:16:10
● 2026-04-24 01:40:56
● 2026-05-19 02:21:42
○ 2026-05-22 07:24:40
● 2026-05-22 10:31:24
● 2026-07-10 17:20:50
○A184.172.106.422015-05-08 → 2015-10-28 · 4 obs
● 2015-05-08 13:17:30
● 2015-10-28 13:34:20
○ 2016-01-04 11:34:22
○ 2026-07-10 17:20:50
● 2015-10-28 13:34:20
○ 2016-01-04 11:34:22
○ 2026-07-10 17:20:50
○A185.2.66.162015-05-08 → 2015-05-08 · 3 obs
● 2015-05-08 13:17:30
○ 2017-05-31 05:04:16
○ 2026-07-10 17:20:50
○ 2017-05-31 05:04:16
○ 2026-07-10 17:20:50
○A188.114.96.02026-03-10 → 2026-04-09 · 9 obs
○ 2026-03-07 08:03:40
● 2026-03-10 04:39:10
● 2026-03-15 11:38:46
○ 2026-03-26 12:01:58
○ 2026-04-01 23:43:44
● 2026-04-05 13:37:12
● 2026-04-09 07:16:10
○ 2026-04-24 01:40:56
○ 2026-07-10 17:20:50
● 2026-03-10 04:39:10
● 2026-03-15 11:38:46
○ 2026-03-26 12:01:58
○ 2026-04-01 23:43:44
● 2026-04-05 13:37:12
● 2026-04-09 07:16:10
○ 2026-04-24 01:40:56
○ 2026-07-10 17:20:50
○A188.114.97.02026-03-10 → 2026-04-09 · 9 obs
○ 2026-03-07 08:03:40
● 2026-03-10 04:39:10
● 2026-03-15 11:38:46
○ 2026-03-26 12:01:58
○ 2026-04-01 23:43:44
● 2026-04-05 13:37:12
● 2026-04-09 07:16:10
○ 2026-04-24 01:40:56
○ 2026-07-10 17:20:50
● 2026-03-10 04:39:10
● 2026-03-15 11:38:46
○ 2026-03-26 12:01:58
○ 2026-04-01 23:43:44
● 2026-04-05 13:37:12
● 2026-04-09 07:16:10
○ 2026-04-24 01:40:56
○ 2026-07-10 17:20:50
○A199.115.115.1182017-05-31 → 2017-05-31 · 4 obs
○ 2016-09-15 01:21:20
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
● 2017-05-31 05:04:16
○ 2026-02-16 08:00:10
○ 2026-07-10 17:20:50
●A2606:4700:3030::6815:3ecc2026-06-27 → 2026-07-10 · 3 obs
○ 2026-05-22 10:31:24
● 2026-06-27 19:31:04
● 2026-07-10 17:20:50
● 2026-06-27 19:31:04
● 2026-07-10 17:20:50
○A2606:4700:3030::ac43:8b3d2026-02-16 → 2026-04-24 · 12 obs
○ 2017-05-31 05:04:16
● 2026-02-16 08:00:10
● 2026-03-07 08:03:40
○ 2026-03-10 04:39:10
○ 2026-03-15 11:38:46
● 2026-03-26 12:01:58
● 2026-04-01 23:43:44
○ 2026-04-05 13:37:12
○ 2026-04-09 07:16:10
● 2026-04-24 01:40:56
○ 2026-06-27 19:31:04
○ 2026-07-10 17:20:50
● 2026-02-16 08:00:10
● 2026-03-07 08:03:40
○ 2026-03-10 04:39:10
○ 2026-03-15 11:38:46
● 2026-03-26 12:01:58
● 2026-04-01 23:43:44
○ 2026-04-05 13:37:12
○ 2026-04-09 07:16:10
● 2026-04-24 01:40:56
○ 2026-06-27 19:31:04
○ 2026-07-10 17:20:50
○A2606:4700:3034::6815:3ecc2026-02-16 → 2026-04-24 · 12 obs
○ 2017-05-31 05:04:16
● 2026-02-16 08:00:10
● 2026-03-07 08:03:40
○ 2026-03-10 04:39:10
○ 2026-03-15 11:38:46
● 2026-03-26 12:01:58
● 2026-04-01 23:43:44
○ 2026-04-05 13:37:12
○ 2026-04-09 07:16:10
● 2026-04-24 01:40:56
○ 2026-06-27 19:31:04
○ 2026-07-10 17:20:50
● 2026-02-16 08:00:10
● 2026-03-07 08:03:40
○ 2026-03-10 04:39:10
○ 2026-03-15 11:38:46
● 2026-03-26 12:01:58
● 2026-04-01 23:43:44
○ 2026-04-05 13:37:12
○ 2026-04-09 07:16:10
● 2026-04-24 01:40:56
○ 2026-06-27 19:31:04
○ 2026-07-10 17:20:50
●A2606:4700:3034::ac43:8b3d2026-06-27 → 2026-07-10 · 3 obs
○ 2026-05-22 10:31:24
● 2026-06-27 19:31:04
● 2026-07-10 17:20:50
● 2026-06-27 19:31:04
● 2026-07-10 17:20:50
○A2a06:98c1:3120::2026-03-10 → 2026-04-09 · 9 obs
○ 2026-03-07 08:03:40
● 2026-03-10 04:39:10
● 2026-03-15 11:38:46
○ 2026-03-26 12:01:58
○ 2026-04-01 23:43:44
● 2026-04-05 13:37:12
● 2026-04-09 07:16:10
○ 2026-04-24 01:40:56
○ 2026-07-10 17:20:50
● 2026-03-10 04:39:10
● 2026-03-15 11:38:46
○ 2026-03-26 12:01:58
○ 2026-04-01 23:43:44
● 2026-04-05 13:37:12
● 2026-04-09 07:16:10
○ 2026-04-24 01:40:56
○ 2026-07-10 17:20:50
○A2a06:98c1:3121::2026-03-10 → 2026-04-09 · 9 obs
○ 2026-03-07 08:03:40
● 2026-03-10 04:39:10
● 2026-03-15 11:38:46
○ 2026-03-26 12:01:58
○ 2026-04-01 23:43:44
● 2026-04-05 13:37:12
● 2026-04-09 07:16:10
○ 2026-04-24 01:40:56
○ 2026-07-10 17:20:50
● 2026-03-10 04:39:10
● 2026-03-15 11:38:46
○ 2026-03-26 12:01:58
○ 2026-04-01 23:43:44
● 2026-04-05 13:37:12
● 2026-04-09 07:16:10
○ 2026-04-24 01:40:56
○ 2026-07-10 17:20:50
○A94.229.72.1152016-01-04 → 2016-01-04 · 4 obs
○ 2015-10-28 13:34:20
● 2016-01-04 11:34:22
○ 2016-04-08 13:21:16
○ 2026-07-10 17:20:50
● 2016-01-04 11:34:22
○ 2016-04-08 13:21:16
○ 2026-07-10 17:20:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | d.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net, a.gtld-servers.net... | - |
| programmingmobile.com | naya.ns.cloudflare.com, cris.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.194.242
NS records: naya.ns.cloudflare.com, cris.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for programmingmobile.com (unsigned zone)
⏱️ Timing
Total: 211ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.139.61, 104.21.62.204 |
| AAAA | 2 | 2606:4700:3030::6815:3ecc, 2606:4700:3034::ac43:8b3d |
| NS | 2 | cris.ns.cloudflare.com, naya.ns.cloudflare.com |
| MX | 3 | mx2-hosting.jellyfish.systems (pri: 10), mx3-hosting.jellyfish.systems (pri: 20)... |
| TXT | 1 | v=spf1 +a +mx +ip4:162.0.232.220 include |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | cris.ns.cloudflare.com dns.cloudflare.co |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (naya.ns.cloudflare.com, naya.ns.cloudflare.com, naya.ns.cloudflare.com...)
Analysis
Hierarchy
programmingmobile.com serves as the parent of www.programmingmobile.com.
IP Addresses
programmingmobile.com has four IP addresses: 104.21.62.204, 172.67.139.61, 2606:4700:3030::6815:3ecc and 2606:4700:3034::ac43:8b3d.
birchibis.info, lesliedyas.com, osufava.top and two other host names share IP numbers with programmingmobile.com.
Name Servers
Two name servers handle the delegation for programmingmobile.com: cris.ns.cloudflare.com and naya.ns.cloudflare.com.
programmingmobile.com uses the same name servers as several other domains — among them rastervect.com, ded98.com, buginter.com and two more.
programmingmobile.com has at least partial name server overlap with other domains, such as felixkit.com, meddast.com, sentezterapi.net and two others.
It is common to see these name servers used together with name servers jamie.ns.cloudflare.com and sloan.ns.cloudflare.com.
Hostnames that resolve to 6 IP addresses:
cris.ns.cloudflare.com resolves to 108.162.195.202, 162.159.44.202 and 172.64.35.202 among others, with 3 other IP addresses in total.
naya.ns.cloudflare.com resolves to 108.162.194.242, 162.159.38.242 and 172.64.34.242 among others, with 3 other IP addresses in total.
Mail Servers
programmingmobile.com has three mail servers: mx1-hosting.jellyfish.systems, mx2-hosting.jellyfish.systems and mx3-hosting.jellyfish.systems.
programmingmobile.com has at least partial mail server overlap with other domains such as aaronalquiza.com, microx.in, forcemagic.id and two more.
mx1-hosting.jellyfish.systems points to 162.255.118.28; mx2-hosting.jellyfish.systems points to 162.255.118.29; mx3-hosting.jellyfish.systems points to 162.255.118.13 — each hostname maps to exactly one IP address.