shell.appspot.com - dns.ninja

shell.appspot.com

DNSSEC⚠️ Not signed
A2607:f8b0:4004:c23::99🇺🇸 Google2607:f8b0:4004::/48
PTRyuiadrs-in-f153.1e100.net
A192.178.155.153🇺🇸 Google192.178.155.0/24
MXgmr-smtp-in.l.google.com ⭐
A2607:f8b0:4004:c08::e🇺🇸 Google2607:f8b0:4004::/48
PTRbi-in-f14.1e100.net
A172.253.63.14🇺🇸 Google172.253.63.0/24
PTRbi-in-f14.1e100.net
MXalt1.gmr-smtp-in.l.google.com(10)
A2800:3f0:4003:c0f::e🇨🇱 Google2800:3f0:4003::/48
A108.177.123.14🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f14.1e100.net
MXalt2.gmr-smtp-in.l.google.com(20)
A2a00:1450:400b:c02::e🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f14.1e100.net
A172.253.116.14🇺🇸 Google172.253.116.0/24
PTRdj-in-f14.1e100.net
MXalt3.gmr-smtp-in.l.google.com(30)
A2a00:1450:4009:c0f::e🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f14.1e100.net
A192.178.223.14🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f14.1e100.net
MXalt4.gmr-smtp-in.l.google.com(40)
A2a00:1450:400c:c23::e🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f14.1e100.net
A172.253.157.14🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f14.1e100.net

appspot.com

DNSSEC⚠️ Not signed
A2a00:1450:4009:c15::65🇬🇧 Google2a00:1450:4009::/48
A2a00:1450:4009:c15::71🇬🇧 Google2a00:1450:4009::/48
A2a00:1450:4009:c15::8a🇬🇧 Google2a00:1450:4009::/48
A2a00:1450:4009:c15::8b🇬🇧 Google2a00:1450:4009::/48
A142.251.29.100🇺🇸 Google142.251.29.0/24
A142.251.29.101🇺🇸 Google142.251.29.0/24
A142.251.29.102🇺🇸 Google142.251.29.0/24
A142.251.29.113🇺🇸 Google142.251.29.0/24
A142.251.29.138🇺🇸 Google142.251.29.0/24
A142.251.29.139🇺🇸 Google142.251.29.0/24
NSns1.google.com ⭐
NSns2.google.com
NSns3.google.com
NSns4.google.com
TXTv=spf1 -all
TXTIPROTA_D29304-(0x585858)
SOAns1.google.comdns-admin@google.com serial=937222855
WOT: SAFE (81/100)
rank #617 globally
rank #362 in the tld

appspot.com

appspot.com is the default domain Google App Engine assigns to hosted applications. It is operated by Google and serves as the base for app-specific subdomains.

Key facts

  • Owner / operator: Google
  • TLD:.com— gTLD
  • Primary purpose: hosting platform for Google App Engine applications (PaaS)
  • Status: active

History

YearEvent
2008Launch of Google App Engine (beta) with default*.appspot.comsubdomains
2014Introduction of Managed VMs (precursor to Flexible environment)
2015General Availability of App Engine Flexible Environment
2020Automatic SSL for custom domains on App Engine apps

Notable subdomains or services

  • *.appspot.com– Google App Engine applications
Semrush Rank:#7,468,264 Keywords:1 Traffic:12/mo
WOT: SAFE (82/100)
📈 Tranco rank: #775
appspot.com - Tranco Rank (30d: ↑+6)770775780785790791May 17May 26Jun 4Jun 13Jun 22Jun 23Rank#781#775

Google App Engine Hosting Domain

appspot.com is the default hosting domain for applications deployed on Google App Engine, Google Cloud's fully managed serverless platform for developing and hosting web applications at scale. When developers deploy an application to App Engine, it is automatically assigned a subdomain under appspot.com (e.g.,myproject.appspot.com).

Key Features of App Engine

  • Serverless Architecture – No server management required; Google handles infrastructure
  • Automatic Scaling – Capacity adjusts dynamically based on traffic demand
  • Multi-Language Support – Python, Go, Java, Node.js, PHP, Ruby, and .NET
  • Two Environments – Standard (pre-configured runtimes) and Flexible (custom containers)

DNS Infrastructure

The domain is hosted entirely on Google's infrastructure:

Record TypeDetails
Nameserversns1-4.google.com (AS15169)
IPv4Multiple IPs in 192.178.155.x range
IPv62607:f8b0:4004:c23::/64
SPFv=spf1 -all(no mail sent from this domain)
DNSSECNot signed

App Engine was one of the first Platform-as-a-Service (PaaS) offerings when Google launched it in 2008, predating competitors like Heroku and AWS Elastic Beanstalk. Today it remains a core component of Google Cloud Platform, serving millions of applications worldwide.

Same first word

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Similar names

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hells.cz
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eslhl.com
lshel.com

DNS History

64 records (7 active, 57 former)

202120222023202420252026MXalt1.gmr-smtp-in.l.google.comalt2.gmr-smtp-in.l.google.comalt3.gmr-smtp-in.l.google.comalt4.gmr-smtp-in.l.google.comgmr-smtp-in.l.google.comA192.178.155.1532607:f8b0:4004:c23::99142.250.117.153142.250.129.153142.250.140.153142.250.190.244142.250.217.20142.250.31.153142.250.72.20142.251.111.153142.251.163.153142.251.167.153142.251.179.153142.251.211.180142.251.211.212142.251.211.84142.251.35.84142.251.40.116142.251.40.244142.251.41.20142.251.45.180142.251.45.84172.253.115.153172.253.122.153172.253.139.153172.253.63.153173.194.45.153192.178.223.153216.58.204.522607:f8b0:4004:c06::992607:f8b0:4004:c08::992607:f8b0:4004:c09::992607:f8b0:4004:c0b::992607:f8b0:4004:c19::992607:f8b0:4004:c1b::992607:f8b0:4004:c1d::992607:f8b0:4004:c1f::992607:f8b0:4004:c21::992607:f8b0:4004:c27::992607:f8b0:4004:c29::992607:f8b0:4006:800::20142607:f8b0:4006:802::20142607:f8b0:4006:805::20142607:f8b0:4006:814::20142607:f8b0:4006:816::20142607:f8b0:4006:818::20142607:f8b0:4006:819::20142607:f8b0:4006:81f::20142607:f8b0:4006:823::20142607:f8b0:4007:804::20142607:f8b0:4007:805::20142607:f8b0:4007:806::20142a00:1450:4009:80d::20142a00:1450:4009:c04::992a00:1450:4009:c08::992a00:1450:4009:c0b::992a00:1450:4009:c0f::992a00:1450:4009:c13::9964.233.180.153
●MXalt1.gmr-smtp-in.l.google.com2020-02-19 → 2026-06-25 · 2 obs
● 2020-02-19 12:07:04
● 2026-06-25 17:26:04
●MXalt2.gmr-smtp-in.l.google.com2020-02-19 → 2026-06-25 · 2 obs
● 2020-02-19 12:07:04
● 2026-06-25 17:26:04
●MXalt3.gmr-smtp-in.l.google.com2020-02-19 → 2026-06-25 · 2 obs
● 2020-02-19 12:07:04
● 2026-06-25 17:26:04
●MXalt4.gmr-smtp-in.l.google.com2020-02-19 → 2026-06-25 · 2 obs
● 2020-02-19 12:07:04
● 2026-06-25 17:26:04
●MXgmr-smtp-in.l.google.com2020-02-19 → 2026-06-25 · 2 obs
● 2020-02-19 12:07:04
● 2026-06-25 17:26:04
○A142.250.117.1532026-05-04 → 2026-05-04 · 4 obs
○ 2026-05-03 19:05:38
● 2026-05-04 21:16:06
○ 2026-05-06 07:17:34
○ 2026-06-25 17:26:04
○A142.250.129.1532026-03-03 → 2026-05-11 · 10 obs
○ 2020-02-19 12:07:04
● 2026-03-03 01:45:12
○ 2026-03-05 01:19:26
○ 2026-04-21 08:52:32
● 2026-04-22 10:08:20
○ 2026-04-23 13:41:18
○ 2026-05-11 19:22:36
● 2026-05-11 19:57:16
○ 2026-05-13 06:15:32
○ 2026-06-25 17:26:04
○A142.250.140.1532026-03-15 → 2026-03-15 · 4 obs
○ 2026-03-14 06:21:48
● 2026-03-15 15:18:20
○ 2026-03-17 14:44:12
○ 2026-06-25 17:26:04
○A142.250.190.2442026-03-20 → 2026-03-20 · 4 obs
○ 2026-03-20 11:56:42
● 2026-03-20 21:39:52
○ 2026-03-22 05:36:00
○ 2026-06-25 17:26:04
○A142.250.217.202026-04-09 → 2026-04-25 · 11 obs
○ 2026-04-08 18:28:26
● 2026-04-09 08:50:04
● 2026-04-13 20:37:12
○ 2026-04-18 03:06:54
○ 2026-04-20 19:28:42
● 2026-04-21 08:52:32
○ 2026-04-22 10:08:20
● 2026-04-23 13:41:18
● 2026-04-25 23:16:38
○ 2026-04-28 13:11:52
○ 2026-06-25 17:26:04
○A142.250.31.1532026-03-08 → 2026-03-08 · 4 obs
○ 2026-03-07 06:30:26
● 2026-03-08 03:57:52
○ 2026-03-14 06:21:48
○ 2026-06-25 17:26:04
○A142.250.72.202026-03-25 → 2026-03-25 · 4 obs
○ 2026-03-22 05:36:00
● 2026-03-25 04:00:16
○ 2026-03-28 02:02:04
○ 2026-06-25 17:26:04
○A142.251.111.1532026-04-30 → 2026-05-03 · 5 obs
○ 2026-04-28 18:52:28
● 2026-04-30 18:25:40
● 2026-05-03 19:05:38
○ 2026-05-04 21:16:06
○ 2026-06-25 17:26:04
○A142.251.163.1532026-05-31 → 2026-06-03 · 5 obs
○ 2026-05-27 11:20:38
● 2026-05-31 02:30:02
● 2026-06-03 22:50:36
○ 2026-06-08 04:28:46
○ 2026-06-25 17:26:04
○A142.251.167.1532026-06-10 → 2026-06-16 · 7 obs
○ 2026-06-08 04:28:46
● 2026-06-10 16:55:38
○ 2026-06-12 00:12:32
● 2026-06-14 11:32:10
● 2026-06-16 09:51:52
○ 2026-06-17 12:47:20
○ 2026-06-25 17:26:04
○A142.251.179.1532026-06-24 → 2026-06-24 · 4 obs
○ 2026-06-19 00:55:56
● 2026-06-24 03:03:02
○ 2026-06-24 03:58:14
○ 2026-06-25 17:26:04
○A142.251.211.1802026-03-28 → 2026-03-28 · 4 obs
○ 2026-03-25 04:00:16
● 2026-03-28 02:02:04
○ 2026-04-06 10:07:44
○ 2026-06-25 17:26:04
○A142.251.211.2122026-03-22 → 2026-03-22 · 4 obs
○ 2026-03-20 21:39:52
● 2026-03-22 05:36:00
○ 2026-03-25 04:00:16
○ 2026-06-25 17:26:04
○A142.251.211.842026-04-06 → 2026-04-06 · 4 obs
○ 2026-03-28 02:02:04
● 2026-04-06 10:07:44
○ 2026-04-08 18:28:26
○ 2026-06-25 17:26:04
○A142.251.35.842026-04-08 → 2026-04-08 · 4 obs
○ 2026-04-06 10:07:44
● 2026-04-08 18:28:26
○ 2026-04-09 08:50:04
○ 2026-06-25 17:26:04
○A142.251.40.1162026-06-19 → 2026-06-24 · 5 obs
○ 2026-06-17 12:47:20
● 2026-06-19 00:55:56
○ 2026-06-24 03:03:02
● 2026-06-24 03:58:14
○ 2026-06-25 17:26:04
○A142.251.40.2442026-04-18 → 2026-04-20 · 5 obs
○ 2026-04-13 20:37:12
● 2026-04-18 03:06:54
● 2026-04-20 19:28:42
○ 2026-04-21 08:52:32
○ 2026-06-25 17:26:04
○A142.251.41.202026-05-06 → 2026-05-16 · 7 obs
○ 2026-05-04 21:16:06
● 2026-05-06 07:17:34
○ 2026-05-09 04:01:38
○ 2026-05-14 15:52:58
● 2026-05-16 22:15:54
○ 2026-05-17 13:14:28
○ 2026-06-25 17:26:04
○A142.251.45.1802026-03-17 → 2026-03-20 · 5 obs
○ 2026-03-15 15:18:20
● 2026-03-17 14:44:12
● 2026-03-20 11:56:42
○ 2026-03-20 21:39:52
○ 2026-06-25 17:26:04
○A142.251.45.842026-03-14 → 2026-03-14 · 4 obs
○ 2026-03-08 03:57:52
● 2026-03-14 06:21:48
○ 2026-03-15 15:18:20
○ 2026-06-25 17:26:04
○A172.253.115.1532026-05-24 → 2026-05-24 · 4 obs
○ 2026-05-20 16:03:52
● 2026-05-24 00:42:22
○ 2026-05-27 11:20:38
○ 2026-06-25 17:26:04
○A172.253.122.1532026-03-07 → 2026-03-07 · 4 obs
○ 2026-03-05 19:27:00
● 2026-03-07 06:30:26
○ 2026-03-08 03:57:52
○ 2026-06-25 17:26:04
○A172.253.139.1532026-05-13 → 2026-05-14 · 5 obs
○ 2026-05-11 19:57:16
● 2026-05-13 06:15:32
● 2026-05-14 03:17:08
○ 2026-05-14 15:52:58
○ 2026-06-25 17:26:04
○A172.253.63.1532026-03-05 → 2026-06-12 · 8 obs
○ 2026-03-03 01:45:12
● 2026-03-05 01:19:26
● 2026-03-05 19:27:00
○ 2026-03-07 06:30:26
○ 2026-06-10 16:55:38
● 2026-06-12 00:12:32
○ 2026-06-14 11:32:10
○ 2026-06-25 17:26:04
○A173.194.45.1532026-05-27 → 2026-05-27 · 4 obs
○ 2026-05-24 00:42:22
● 2026-05-27 11:20:38
○ 2026-05-31 02:30:02
○ 2026-06-25 17:26:04
●A192.178.155.1532026-04-28 → 2026-06-25 · 14 obs
○ 2026-04-25 23:16:38
● 2026-04-28 13:11:52
● 2026-04-28 18:52:28
○ 2026-04-30 18:25:40
○ 2026-05-09 04:01:38
● 2026-05-11 19:22:36
○ 2026-05-11 19:57:16
○ 2026-05-14 03:17:08
● 2026-05-14 15:52:58
○ 2026-05-16 22:15:54
○ 2026-05-17 13:14:28
● 2026-05-20 16:03:52
○ 2026-05-24 00:42:22
● 2026-06-25 17:26:04
○A192.178.223.1532026-06-17 → 2026-06-17 · 4 obs
○ 2026-06-16 09:51:52
● 2026-06-17 12:47:20
○ 2026-06-19 00:55:56
○ 2026-06-25 17:26:04
○A216.58.204.522020-02-19 → 2020-02-19 · 3 obs
● 2020-02-19 12:07:04
○ 2026-03-03 01:45:12
○ 2026-06-25 17:26:04
○A2607:f8b0:4004:c06::992026-05-24 → 2026-05-24 · 4 obs
○ 2026-05-20 16:03:52
● 2026-05-24 00:42:22
○ 2026-05-27 11:20:38
○ 2026-06-25 17:26:04
○A2607:f8b0:4004:c08::992026-03-05 → 2026-06-12 · 8 obs
○ 2026-03-03 01:45:12
● 2026-03-05 01:19:26
● 2026-03-05 19:27:00
○ 2026-03-07 06:30:26
○ 2026-06-10 16:55:38
● 2026-06-12 00:12:32
○ 2026-06-14 11:32:10
○ 2026-06-25 17:26:04
○A2607:f8b0:4004:c09::992026-03-07 → 2026-03-07 · 4 obs
○ 2026-03-05 19:27:00
● 2026-03-07 06:30:26
○ 2026-03-08 03:57:52
○ 2026-06-25 17:26:04
○A2607:f8b0:4004:c0b::992026-03-08 → 2026-03-08 · 4 obs
○ 2026-03-07 06:30:26
● 2026-03-08 03:57:52
○ 2026-03-14 06:21:48
○ 2026-06-25 17:26:04
○A2607:f8b0:4004:c19::992026-04-30 → 2026-05-03 · 5 obs
○ 2026-04-28 18:52:28
● 2026-04-30 18:25:40
● 2026-05-03 19:05:38
○ 2026-05-04 21:16:06
○ 2026-06-25 17:26:04
○A2607:f8b0:4004:c1b::992026-05-31 → 2026-06-03 · 5 obs
○ 2026-05-27 11:20:38
● 2026-05-31 02:30:02
● 2026-06-03 22:50:36
○ 2026-06-08 04:28:46
○ 2026-06-25 17:26:04
○A2607:f8b0:4004:c1d::992026-06-10 → 2026-06-16 · 7 obs
○ 2026-06-08 04:28:46
● 2026-06-10 16:55:38
○ 2026-06-12 00:12:32
● 2026-06-14 11:32:10
● 2026-06-16 09:51:52
○ 2026-06-17 12:47:20
○ 2026-06-25 17:26:04
○A2607:f8b0:4004:c1f::992026-06-24 → 2026-06-24 · 4 obs
○ 2026-06-19 00:55:56
● 2026-06-24 03:03:02
○ 2026-06-24 03:58:14
○ 2026-06-25 17:26:04
○A2607:f8b0:4004:c21::992026-05-09 → 2026-06-08 · 11 obs
○ 2026-03-03 01:45:12
○ 2026-05-06 07:17:34
● 2026-05-09 04:01:38
○ 2026-05-11 19:22:36
○ 2026-05-16 22:15:54
● 2026-05-17 13:14:28
○ 2026-05-20 16:03:52
○ 2026-06-03 22:50:36
● 2026-06-08 04:28:46
○ 2026-06-10 16:55:38
○ 2026-06-25 17:26:04
●A2607:f8b0:4004:c23::992026-04-28 → 2026-06-25 · 16 obs
○ 2026-04-25 23:16:38
● 2026-04-28 13:11:52
● 2026-04-28 18:52:28
○ 2026-04-30 18:25:40
○ 2026-05-09 04:01:38
● 2026-05-11 19:22:36
○ 2026-05-11 19:57:16
● 2026-05-13 06:15:32
○ 2026-05-13 21:49:32
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○A2607:f8b0:4004:c27::992026-05-13 → 2026-05-14 · 5 obs
○ 2026-05-13 06:15:32
● 2026-05-13 21:49:32
● 2026-05-14 03:17:08
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○A2607:f8b0:4004:c29::992026-05-27 → 2026-05-27 · 4 obs
○ 2026-05-24 00:42:22
● 2026-05-27 11:20:38
○ 2026-05-31 02:30:02
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○A2607:f8b0:4006:800::20142026-03-20 → 2026-03-20 · 4 obs
○ 2026-03-20 11:56:42
● 2026-03-20 21:39:52
○ 2026-03-22 05:36:00
○ 2026-06-25 17:26:04
○A2607:f8b0:4006:802::20142026-04-09 → 2026-04-25 · 11 obs
○ 2026-04-08 18:28:26
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○A2607:f8b0:4006:805::20142026-03-17 → 2026-03-20 · 5 obs
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● 2026-03-17 14:44:12
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○A2607:f8b0:4006:814::20142026-03-25 → 2026-03-25 · 4 obs
○ 2026-03-22 05:36:00
● 2026-03-25 04:00:16
○ 2026-03-28 02:02:04
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○A2607:f8b0:4006:816::20142026-04-18 → 2026-04-20 · 5 obs
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○ 2026-04-21 08:52:32
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○A2607:f8b0:4006:818::20142026-03-14 → 2026-03-14 · 4 obs
○ 2026-03-08 03:57:52
● 2026-03-14 06:21:48
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○A2607:f8b0:4006:819::20142026-04-06 → 2026-04-06 · 4 obs
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○A2607:f8b0:4006:81f::20142026-03-28 → 2026-03-28 · 4 obs
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○A2607:f8b0:4006:823::20142026-03-22 → 2026-03-22 · 4 obs
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● 2026-03-22 05:36:00
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○A2607:f8b0:4007:804::20142026-04-08 → 2026-04-08 · 4 obs
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○A2607:f8b0:4007:805::20142026-06-19 → 2026-06-24 · 5 obs
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● 2026-06-24 03:58:14
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○A2607:f8b0:4007:806::20142026-05-06 → 2026-05-16 · 7 obs
○ 2026-05-04 21:16:06
● 2026-05-06 07:17:34
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● 2026-05-16 22:15:54
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○A2a00:1450:4009:80d::20142020-02-19 → 2020-02-19 · 3 obs
● 2020-02-19 12:07:04
○ 2026-03-03 01:45:12
○ 2026-06-25 17:26:04
○A2a00:1450:4009:c04::992026-05-04 → 2026-05-04 · 4 obs
○ 2026-05-03 19:05:38
● 2026-05-04 21:16:06
○ 2026-05-06 07:17:34
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○A2a00:1450:4009:c08::992026-04-22 → 2026-05-11 · 7 obs
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● 2026-04-22 10:08:20
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● 2026-05-11 19:57:16
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○A2a00:1450:4009:c0b::992026-03-15 → 2026-03-15 · 4 obs
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● 2026-03-15 15:18:20
○ 2026-03-17 14:44:12
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○A2a00:1450:4009:c0f::992026-06-17 → 2026-06-17 · 4 obs
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● 2026-06-17 12:47:20
○ 2026-06-19 00:55:56
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○A2a00:1450:4009:c13::992026-03-03 → 2026-03-03 · 4 obs
○ 2020-02-19 12:07:04
● 2026-03-03 01:45:12
○ 2026-03-05 01:19:26
○ 2026-06-25 17:26:04
○A64.233.180.1532026-05-09 → 2026-06-08 · 11 obs
○ 2026-03-03 01:45:12
○ 2026-05-06 07:17:34
● 2026-05-09 04:01:38
○ 2026-05-11 19:22:36
○ 2026-05-16 22:15:54
● 2026-05-17 13:14:28
○ 2026-05-20 16:03:52
○ 2026-06-03 22:50:36
● 2026-06-08 04:28:46
○ 2026-06-10 16:55:38
○ 2026-06-25 17:26:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
appspot.comns2.google.com, ns1.google.com, ns3.google.com, ns4.google.com8 records

✅ Authoritative Response

Server:216.239.38.10

NS records: ns2.google.com, ns1.google.com, ns3.google.com, ns4.google.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for appspot.com (unsigned zone)

⏱️ Timing

Total: 209ms | Queries: -

📄 Records

TypeCountSample Data
A1192.178.155.153
AAAA12607:f8b0:4004:c23::99
MX5alt3.gmr-smtp-in.l.google.com (pri: 30), alt4.gmr-smtp-in.l.google.com (pri: 40)...

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns2.google.com, ns2.google.com, ns1.google.com...)

Analysis

IP Addresses

shell.appspot.com points to the IP addresses 192.178.155.153 and 2607:f8b0:4004:c23::99

Two other host names, along with hxjspcafjpipttqkmuxdxpbqgizffyvmiyfo-dot-offglen.uk.r.appspot.com, ncqp3-dot-kzal-tv.appspot.com and 3-dot-bmisdemo01.majik102502.appspot.com, also share IP numbers with shell.appspot.com.

Mail Servers

shell.appspot.com has five mail servers, which are gmr-smtp-in.l.google.com, alt1.gmr-smtp-in.l.google.com, alt2.gmr-smtp-in.l.google.com and two others.

There is at least a partial MX overlap between shell.appspot.com and other domains, including 13-dot-sukelareader.iy9erpxzoaz.appspot.com, zutgames-dot-yamm-track.appspot.com, 2.searchengine-work.appspot.com and two others.

These mail servers are routinely seen in conjunction with the mail servers alt3.gmr-smtp-in.l.google.com and alt4.gmr-smtp-in.l.google.com.

Host names that have two IP addresses:

gmr-smtp-in.l.google.com directs traffic to 172.253.63.14 and 2607:f8b0:4004:c08::e.

alt1.gmr-smtp-in.l.google.com directs traffic to 108.177.123.14 and 2800:3f0:4003:c0f::e.

alt2.gmr-smtp-in.l.google.com directs traffic to 172.253.116.14 and 2a00:1450:400b:c02::e.

alt3.gmr-smtp-in.l.google.com directs traffic to 192.178.223.14 and 2a00:1450:4009:c0f::e.

alt4.gmr-smtp-in.l.google.com directs traffic to 172.253.157.14 and 2a00:1450:400c:c23::e.