back.engineering - robtex.com

back.engineering

DNSSEC⚠️ Not signed
A2606:4700:3037::6815:5219🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:975d🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.82.25Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.151.93🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSmemphis.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2cbd🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmemphis.ns.cloudflare.com
A2803:f800:50::6ca2:c3bd🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRmemphis.ns.cloudflare.com
A2a06:98c1:50::ac40:23bd🇺🇸 Cloudflare2a06:98c1:50::/45
PTRmemphis.ns.cloudflare.com
A108.162.195.189🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmemphis.ns.cloudflare.com
A162.159.44.189Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmemphis.ns.cloudflare.com
A172.64.35.189🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmemphis.ns.cloudflare.com
NSveronica.ns.cloudflare.com
A2606:4700:50::a29f:26ad🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRveronica.ns.cloudflare.com
A2803:f800:50::6ca2:c2ad🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRveronica.ns.cloudflare.com
A2a06:98c1:50::ac40:22ad🇺🇸 Cloudflare2a06:98c1:50::/45
PTRveronica.ns.cloudflare.com
A108.162.194.173🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRveronica.ns.cloudflare.com
A162.159.38.173Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRveronica.ns.cloudflare.com
A172.64.34.173🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRveronica.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c17::1a🇺🇸 Google2607:f8b0:4004::/48
PTRbl-in-f26.1e100.net
A172.253.122.26🇺🇸 Google172.253.122.0/24
PTRbh-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.26🇺🇸 Google172.253.116.0/24
PTRdj-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:400c:c23::1a🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f26.1e100.net
A172.253.157.27🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f27.1e100.net
TXTgoogle-site-verification=QFVanmps5d2gA1j3C5EJtK5koNAzSKMXFJ4kWEhP__U
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.82.25, 172.67.151.93
IPv6 hints2606:4700:3037::6815:5219, 2606:4700:3037::ac43:975d
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=60, name=cloudflare-ech.com
SOAmemphis.ns.cloudflare.comdns@cloudflare.com serial=2407565197

engineering

DNSSEC🔒 Signed (DS record present)
NSv0n0.nic.engineering ⭐
NSv0n1.nic.engineering
NSv0n2.nic.engineering
NSv0n3.nic.engineering
NSv2n0.nic.engineering
NSv2n1.nic.engineering
SOAv0n0.nic.engineeringhostmaster@donuts.email serial=1783922641

Same first word

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back.ai
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back.amsterdam
back.app
back.agency
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back.ru
back.nl
back.cash
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back.tw
back.es
back.lat
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back.events
back.com.ar
back.ax
back.zone
back.schule
back.is
back.ws
back.ly
back.ink
back.to
back.ro
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back.com
back.by
back.cloudns.cx
back.eu
back.dk
back.bio
back.nu

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kbca.co.nz

DNS History

21 records (9 active, 12 former)

NSmemphis.ns.cloudflare.comveronica.ns.cloudflare.comMXalt2.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA104.21.82.25172.67.151.932606:4700:3037::6815:52192606:4700:3037::ac43:975d172.64.80.1188.114.96.0188.114.96.4188.114.97.0188.114.97.42606:4700:130:436c:6f75:6466:6c61:72652606:4700:3035::6815:52192606:4700:3036::ac43:975d2a06:98c1:3120::2a06:98c1:3120::42a06:98c1:3121::2a06:98c1:3121::4
●NSmemphis.ns.cloudflare.com2026-02-21 → 2026-07-13 · 2 obs
● 2026-02-21 12:54:10
● 2026-07-13 06:28:46
●NSveronica.ns.cloudflare.com2026-02-21 → 2026-07-13 · 2 obs
● 2026-02-21 12:54:10
● 2026-07-13 06:28:46
●MXalt2.aspmx.l.google.com2026-02-21 → 2026-07-13 · 2 obs
● 2026-02-21 12:54:10
● 2026-07-13 06:28:46
●MXalt4.aspmx.l.google.com2026-02-21 → 2026-07-13 · 2 obs
● 2026-02-21 12:54:10
● 2026-07-13 06:28:46
●MXaspmx.l.google.com2026-02-21 → 2026-07-13 · 2 obs
● 2026-02-21 12:54:10
● 2026-07-13 06:28:46
●A104.21.82.252026-03-27 → 2026-07-13 · 11 obs
○ 2026-02-21 12:54:10
● 2026-03-27 16:24:06
○ 2026-03-31 04:28:14
● 2026-04-09 13:02:18
● 2026-04-29 00:03:32
○ 2026-05-01 13:14:42
● 2026-05-09 19:58:20
● 2026-06-07 19:34:42
○ 2026-06-15 07:02:06
● 2026-06-15 07:36:54
● 2026-07-13 06:28:46
○A172.64.80.12026-02-21 → 2026-07-13 · 2 obs
○ 2026-02-21 12:54:10
○ 2026-07-13 06:28:46
●A172.67.151.932026-03-27 → 2026-07-13 · 11 obs
○ 2026-02-21 12:54:10
● 2026-03-27 16:24:06
○ 2026-03-31 04:28:14
● 2026-04-09 13:02:18
● 2026-04-29 00:03:32
○ 2026-05-01 13:14:42
● 2026-05-09 19:58:20
● 2026-06-07 19:34:42
○ 2026-06-15 07:02:06
● 2026-06-15 07:36:54
● 2026-07-13 06:28:46
○A188.114.96.02026-02-21 → 2026-05-01 · 8 obs
● 2026-02-21 12:54:10
○ 2026-03-27 16:24:06
● 2026-03-31 04:28:14
○ 2026-04-09 13:02:18
○ 2026-04-29 00:03:32
● 2026-05-01 13:14:42
○ 2026-05-09 19:58:20
○ 2026-07-13 06:28:46
○A188.114.96.42026-06-15 → 2026-06-15 · 4 obs
○ 2026-06-07 19:34:42
● 2026-06-15 07:02:06
○ 2026-06-15 07:36:54
○ 2026-07-13 06:28:46
○A188.114.97.02026-02-21 → 2026-05-01 · 8 obs
● 2026-02-21 12:54:10
○ 2026-03-27 16:24:06
● 2026-03-31 04:28:14
○ 2026-04-09 13:02:18
○ 2026-04-29 00:03:32
● 2026-05-01 13:14:42
○ 2026-05-09 19:58:20
○ 2026-07-13 06:28:46
○A188.114.97.42026-06-15 → 2026-06-15 · 4 obs
○ 2026-06-07 19:34:42
● 2026-06-15 07:02:06
○ 2026-06-15 07:36:54
○ 2026-07-13 06:28:46
○A2606:4700:130:436c:6f75:6466:6c61:72652026-02-21 → 2026-07-13 · 2 obs
○ 2026-02-21 12:54:10
○ 2026-07-13 06:28:46
○A2606:4700:3035::6815:52192026-03-27 → 2026-06-15 · 12 obs
○ 2026-02-21 12:54:10
● 2026-03-27 16:24:06
○ 2026-03-31 04:28:14
● 2026-04-09 13:02:18
● 2026-04-29 00:03:32
○ 2026-05-01 13:14:42
● 2026-05-09 19:58:20
● 2026-06-07 19:34:42
○ 2026-06-15 07:02:06
● 2026-06-15 07:36:54
○ 2026-07-02 12:11:12
○ 2026-07-13 06:28:46
○A2606:4700:3036::ac43:975d2026-03-27 → 2026-06-15 · 12 obs
○ 2026-02-21 12:54:10
● 2026-03-27 16:24:06
○ 2026-03-31 04:28:14
● 2026-04-09 13:02:18
● 2026-04-29 00:03:32
○ 2026-05-01 13:14:42
● 2026-05-09 19:58:20
● 2026-06-07 19:34:42
○ 2026-06-15 07:02:06
● 2026-06-15 07:36:54
○ 2026-07-02 12:11:12
○ 2026-07-13 06:28:46
●A2606:4700:3037::6815:52192026-07-02 → 2026-07-13 · 3 obs
○ 2026-06-15 07:36:54
● 2026-07-02 12:11:12
● 2026-07-13 06:28:46
●A2606:4700:3037::ac43:975d2026-07-02 → 2026-07-13 · 3 obs
○ 2026-06-15 07:36:54
● 2026-07-02 12:11:12
● 2026-07-13 06:28:46
○A2a06:98c1:3120::2026-02-21 → 2026-05-01 · 8 obs
● 2026-02-21 12:54:10
○ 2026-03-27 16:24:06
● 2026-03-31 04:28:14
○ 2026-04-09 13:02:18
○ 2026-04-29 00:03:32
● 2026-05-01 13:14:42
○ 2026-05-09 19:58:20
○ 2026-07-13 06:28:46
○A2a06:98c1:3120::42026-06-15 → 2026-06-15 · 4 obs
○ 2026-06-07 19:34:42
● 2026-06-15 07:02:06
○ 2026-06-15 07:36:54
○ 2026-07-13 06:28:46
○A2a06:98c1:3121::2026-02-21 → 2026-05-01 · 8 obs
● 2026-02-21 12:54:10
○ 2026-03-27 16:24:06
● 2026-03-31 04:28:14
○ 2026-04-09 13:02:18
○ 2026-04-29 00:03:32
● 2026-05-01 13:14:42
○ 2026-05-09 19:58:20
○ 2026-07-13 06:28:46
○A2a06:98c1:3121::42026-06-15 → 2026-06-15 · 4 obs
○ 2026-06-07 19:34:42
● 2026-06-15 07:02:06
○ 2026-06-15 07:36:54
○ 2026-07-13 06:28:46

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
engineeringv0n0.nic.engineering, v0n1.nic.engineering, v0n2.nic.engineering, v0n3.nic.engineering...12 records
back.engineeringmemphis.ns.cloudflare.com, veronica.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.194.173

NS records: memphis.ns.cloudflare.com, veronica.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for back.engineering (unsigned zone)

⏱️ Timing

Total: 419ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.151.93, 104.21.82.25
AAAA22606:4700:3037::ac43:975d, 2606:4700:3037::6815:5219
NS2memphis.ns.cloudflare.com, veronica.ns.cloudflare.com
MX3aspmx.l.google.com (pri: 1), alt4.aspmx.l.google.com (pri: 10)...
TXT1google-site-verification=QFVanmps5d2gA1j
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1memphis.ns.cloudflare.com dns.cloudflare

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.engineering, v0n0.nic.engineering, v0n1.nic.engineering...)

Analysis

IP Addresses

back.engineering directs to four IP numbers, which are 104.21.82.25, 172.67.151.93, 2606:4700:3037::6815:5219 and 2606:4700:3037::ac43:975d.

Among the host names that share IP numbers with back.engineering are ufabet.cologne, deja.bg, www.pdmusic.org.cdn.cloudflare.net and two others.

Name Servers

back.engineering is delegated to two name servers: memphis.ns.cloudflare.com and veronica.ns.cloudflare.com.

back.engineering has the same name server delegation as a number of other domains, such as freegoogleai.top, ambassen.dk, demoprise.com and two more.

At least some of back.engineering's name servers are shared with other domains, for example smilestudio.com, musicgearcenter.com, softs32.com and two more.

These name servers tend to be deployed in combination with the name servers venus.ns.cloudflare.com and jonah.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

memphis.ns.cloudflare.com resolves to 108.162.195.189, 162.159.44.189, 172.64.35.189 and 3 other IP addresses.

veronica.ns.cloudflare.com resolves to 108.162.194.173, 162.159.38.173, 172.64.34.173 and 3 other IP addresses.

Mail Servers

The MX records for back.engineering list three mail servers: aspmx.l.google.com, alt2.aspmx.l.google.com and alt4.aspmx.l.google.com.

back.engineering shares at least some of its mail servers with other domains — for example finhydro.com, ns500731.ns500671.ns500754.ns500731.ns500688.ns500688.ns500688.ns500678.ns500666.ns500291.ns500291.ns500291.ns500131.lustychickser.com, port5.net and two more.

It is common for these mail servers to co-occur with alt1.aspmx.l.google.com, alt3.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com as mail servers.

aspmx.l.google.com, alt2.aspmx.l.google.com and alt4.aspmx.l.google.com each resolve to two IP addresses: aspmx.l.google.com resolves to 172.253.122.26 and 2607:f8b0:4004:c17::1a; alt2.aspmx.l.google.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1a; alt4.aspmx.l.google.com resolves to 172.253.157.27 and 2a00:1450:400c:c23::1a.