workstream.us - dns.ninja

workstream.us

DNSSEC⚠️ Not signed
A35.162.30.5🇺🇸 Amazon35.160.0.0/13 EC2 PDX prefix
PTRec2-35-162-30-5.us-west-2.compute.amazonaws.com
A44.239.197.87🇺🇸 Amazon44.224.0.0/11 EC2 PDX prefix
A184.33.250.114🇺🇸 Amazon184.32.0.0/14 EC2 Prefix
NSns-975.awsdns-57.net ⭐
A2600:9000:5303:cf00::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront
PTRns-975.awsdns-57.net
A205.251.195.207🇺🇸 Amazon205.251.195.0/24 prefix
PTRns-975.awsdns-57.net
NSns-101.awsdns-12.com
A2600:9000:5300:6500::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront
PTRns-101.awsdns-12.com
A205.251.192.101🇺🇸 Amazon205.251.192.0/24 prefix
PTRns-101.awsdns-12.com
NSns-1515.awsdns-61.org
A2600:9000:5305:eb00::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront
PTRns-1515.awsdns-61.org
A205.251.197.235🇺🇸 Amazon205.251.197.0/24 prefix
PTRns-1515.awsdns-61.org
NSns-2038.awsdns-62.co.uk
A2600:9000:5307:f600::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront
PTRns-2038.awsdns-62.co.uk
A205.251.199.246🇺🇸 Amazon205.251.199.0/24 prefix
PTRns-2038.awsdns-62.co.uk
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c1b::1b🇺🇸 Google2607:f8b0:4004::/48
PTRwv-in-f27.1e100.net
A142.251.16.27🇺🇸 Google142.251.16.0/24
PTRbl-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c0f::1a🇨🇱 Google2800:3f0:4003::/48
A108.177.123.27🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1b🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f27.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.26🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:400c:c23::1b🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f27.1e100.net
A172.253.157.26🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f26.1e100.net
TXTLaUVcCt3JK4G8OiEVrVqm5MehCvvXxv4rsY8lJm30Aw
TXTUa8pbKk5gOkPp6zRyg_DoZD-d9Um6hZ4X1Ntli5FaQs
TXTahrefs-site-verification_dca02597f4a6ade686b32889145a5b59a6afa85b00107e445fd9...
TXTgoogle-site-verification=0kkXBxGcos2Rdk6U2-I_M4Sf_nLRH1P_c8IcqyJOeuo
TXTgoogle-site-verification=24kJqEWJgwwNLd2H7chqcnFx81OBwsfMNbGOjjxBxjw
TXTgoogle-site-verification=ACC5fUCxf8Ymhzn5AG0rHniAjggwO6WLRuWisJFwYzA
TXTgoogle-site-verification=APxR9TO71tUa-Cm_n44dL3XothSJofQC9et1AwarFo8
TXTgoogle-site-verification=IJjL58PcuLGl4TwuOcQEtU8aarSa29w9mX63M16ykzk
TXTgoogle-site-verification=LUUhDgWcszFLA71IVHLCth52tXYtcrN1lQE_X8u4ht8
TXTgoogle-site-verification=RCuqA7Yyc7NBkY3dwQnZtRKs3Dh5UMohHCtOEyYdJk4
TXTgoogle-site-verification=TP3M2Tnk5a4LN-32PllsmYllihANmAofda3ZGDcqado
TXTgoogle-site-verification=hFl9qWPB8OXZskBg8UWP1rLtviknQTIHXPBGHj3uoEA
TXTgoogle-site-verification=hiD2N3kHxuvbffcVeEUa7Z5oFN7j9at7yH_hXYI2IG8
TXTgoogle-site-verification=zQsTilymukGHEU9jyqKgCLfGZMtbyvxRzmrpoGBm3Yc
TXTloom-verification=5034415738
TXTv=spf1 include:_spf.google.com ~all
TXTwework-site-verification=NozlMQPVfEWZfz3Q
SOAns-975.awsdns-57.netawsdns-hostmaster@amazon.com serial=1

us

DNSSEC🔒 Signed (DS record present)
NSa.cctld.us ⭐
NSb.cctld.us
NSf.cctld.us
NSk.cctld.us
NSm.cctld.us
NSn.cctld.us
NSw.cctld.us
NSx.cctld.us
NSy.cctld.us
SOAa.cctld.usadmin@tldns.godaddy serial=1783223022
rank #89601 globally
rank #185 in the tld
📈 Tranco rank: #46,044

Subdomains

interview.workstream.us
download-docs.workstream.us
dev.workstream.us
www.workstream.us
api-doc.workstream.us
hr.workstream.us
api-backend.workstream.us

Same first word

workstream.co.uk
workstream.is
workstream.biz
workstream.construction
workstream.ai
workstream.de
workstream.nl
workstream.ca
workstream.us
workstream.io
workstream.org
workstream.net
workstream.eu
workstream.co.za
workstream.ru
workstream.mobi
workstream.com.au
workstream.in
workstream.pl
workstream.co
workstream.co.jp
workstream.com
workstream.store
workstream.ch
workstream.se

Similar names

workmaster.ca
workmaster.ru
masterwork.es
streamwork.tv
masterwork.org
metraworks.com
workmaster.no
esmartwork.com
masterwork.fr
masterwork.com
masterwork.net
streamwork.ru
emartworks.com
workmaster.us
streamwork.digital
masterwork.me
workmaster.org
masterwork.de
workmaster.shoes
masterwork.wiki
workmaster.com.br
worksmarte.blogspot.com
workmaster.co.uk
masterwork.space
artworksme.com
masterwork.ca
masterwork.no
masterwork.us
masterwork.com.tr
workmaster.biz
worstmaker.nl
materworks.click
rteamworks.com
masterwork.sk
masterwork.co.th
workmaster.de
masterwork.co
streamwork.com.hk
marktowers.net
workmaster.com
artemworks.com
smartwoerk.com
masterwork.ch
streamwork.com
stowermark.com
marktowers.com
workmaster.net
streamwork.org
workmaster.ch
masterwork.sbs
masterwork.eu
masterwork.ir
streamwork.de
workmaster.co.za
eworksmart.com

DNS History

55 records (12 active, 43 former)

20162017201820192020202120222023202420252026NSns-101.awsdns-12.comns-1515.awsdns-61.orgns-2038.awsdns-62.co.ukns-975.awsdns-57.netns17.domaincontrol.comns18.domaincontrol.comns51.domaincontrol.comns52.domaincontrol.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.commailstore1.secureserver.netsmtp.secureserver.netA184.33.250.11435.162.30.544.239.197.87100.22.31.178100.23.136.15616.146.205.4016.147.140.87184.168.221.42184.32.67.166184.32.89.120184.33.222.98184.33.26.111184.34.39.17032.186.91.7834.215.85.7035.167.148.6335.80.113.2435.83.144.17444.233.226.10844.233.23.21244.234.6.11344.235.181.21044.237.101.244.254.171.10050.63.202.4052.10.244.16952.11.167.6752.33.221.10852.33.221.18352.41.56.15854.148.227.10354.148.28.20154.149.60.6254.149.93.15354.187.62.10254.202.243.554.203.93.10954.212.55.5654.69.136.10754.69.89.214
●NSns-101.awsdns-12.com2026-02-16 → 2026-07-05 · 3 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
● 2026-07-05 04:16:40
●NSns-1515.awsdns-61.org2026-02-16 → 2026-07-05 · 3 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
● 2026-07-05 04:16:40
●NSns-2038.awsdns-62.co.uk2026-02-16 → 2026-07-05 · 3 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
● 2026-07-05 04:16:40
●NSns-975.awsdns-57.net2026-02-16 → 2026-07-05 · 3 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
● 2026-07-05 04:16:40
○NSns17.domaincontrol.com2016-09-23 → 2017-04-22 · 5 obs
○ 2016-04-08 03:16:00
● 2016-09-23 14:11:12
● 2017-04-22 18:26:22
○ 2026-02-16 20:54:02
○ 2026-07-05 04:16:40
○NSns18.domaincontrol.com2016-09-23 → 2017-04-22 · 5 obs
○ 2016-04-08 03:16:00
● 2016-09-23 14:11:12
● 2017-04-22 18:26:22
○ 2026-02-16 20:54:02
○ 2026-07-05 04:16:40
○NSns51.domaincontrol.com2015-12-03 → 2015-12-03 · 3 obs
● 2015-12-03 11:43:30
○ 2016-04-08 03:16:00
○ 2026-07-05 04:16:40
○NSns52.domaincontrol.com2015-12-03 → 2015-12-03 · 3 obs
● 2015-12-03 11:43:30
○ 2016-04-08 03:16:00
○ 2026-07-05 04:16:40
●MXalt1.aspmx.l.google.com2026-02-16 → 2026-07-05 · 3 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
● 2026-07-05 04:16:40
●MXalt2.aspmx.l.google.com2026-02-16 → 2026-07-05 · 3 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
● 2026-07-05 04:16:40
●MXalt3.aspmx.l.google.com2026-02-16 → 2026-07-05 · 3 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
● 2026-07-05 04:16:40
●MXalt4.aspmx.l.google.com2026-02-16 → 2026-07-05 · 3 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
● 2026-07-05 04:16:40
●MXaspmx.l.google.com2026-02-16 → 2026-07-05 · 3 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
● 2026-07-05 04:16:40
○MXmailstore1.secureserver.net2015-12-03 → 2017-04-22 · 6 obs
● 2015-12-03 11:43:30
○ 2016-04-08 03:16:00
● 2016-09-23 14:11:12
● 2017-04-22 18:26:22
○ 2026-02-16 20:54:02
○ 2026-07-05 04:16:40
○MXsmtp.secureserver.net2015-12-03 → 2017-04-22 · 6 obs
● 2015-12-03 11:43:30
○ 2016-04-08 03:16:00
● 2016-09-23 14:11:12
● 2017-04-22 18:26:22
○ 2026-02-16 20:54:02
○ 2026-07-05 04:16:40
○A100.22.31.1782026-02-28 → 2026-03-01 · 5 obs
○ 2026-02-24 17:16:54
● 2026-02-28 13:11:14
● 2026-03-01 19:57:02
○ 2026-03-16 18:12:16
○ 2026-07-05 04:16:40
○A100.23.136.1562026-02-28 → 2026-03-01 · 5 obs
○ 2026-02-24 17:16:54
● 2026-02-28 13:11:14
● 2026-03-01 19:57:02
○ 2026-03-16 18:12:16
○ 2026-07-05 04:16:40
○A16.146.205.402026-05-12 → 2026-05-12 · 4 obs
○ 2026-04-17 08:05:02
● 2026-05-12 19:20:20
○ 2026-05-15 06:33:04
○ 2026-07-05 04:16:40
○A16.147.140.872026-06-03 → 2026-06-03 · 4 obs
○ 2026-05-15 06:33:04
● 2026-06-03 20:05:40
○ 2026-06-22 11:27:06
○ 2026-07-05 04:16:40
○A184.168.221.422015-12-03 → 2015-12-03 · 3 obs
● 2015-12-03 11:43:30
○ 2016-04-08 03:16:00
○ 2026-07-05 04:16:40
○A184.32.67.1662026-03-24 → 2026-03-24 · 4 obs
○ 2026-03-16 18:12:16
● 2026-03-24 11:55:16
○ 2026-04-12 03:15:00
○ 2026-07-05 04:16:40
○A184.32.89.1202026-02-18 → 2026-02-24 · 5 obs
○ 2026-02-16 20:54:02
● 2026-02-18 17:35:54
● 2026-02-24 17:16:54
○ 2026-02-28 13:11:14
○ 2026-07-05 04:16:40
○A184.33.222.982026-07-04 → 2026-07-04 · 4 obs
○ 2026-06-26 09:29:04
● 2026-07-04 05:19:34
○ 2026-07-05 00:21:22
○ 2026-07-05 04:16:40
●A184.33.250.1142026-07-05 → 2026-07-05 · 3 obs
○ 2026-07-04 05:19:34
● 2026-07-05 00:21:22
● 2026-07-05 04:16:40
○A184.33.26.1112026-06-03 → 2026-06-03 · 4 obs
○ 2026-05-15 06:33:04
● 2026-06-03 20:05:40
○ 2026-06-22 11:27:06
○ 2026-07-05 04:16:40
○A184.34.39.1702026-04-12 → 2026-04-12 · 4 obs
○ 2026-03-24 11:55:16
● 2026-04-12 03:15:00
○ 2026-04-17 03:24:52
○ 2026-07-05 04:16:40
○A32.186.91.782026-07-04 → 2026-07-04 · 4 obs
○ 2026-06-26 09:29:04
● 2026-07-04 05:19:34
○ 2026-07-05 00:21:22
○ 2026-07-05 04:16:40
○A34.215.85.702026-02-16 → 2026-02-18 · 5 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
● 2026-02-18 17:35:54
○ 2026-02-19 04:13:42
○ 2026-07-05 04:16:40
●A35.162.30.52026-07-05 → 2026-07-05 · 3 obs
○ 2026-07-04 05:19:34
● 2026-07-05 00:21:22
● 2026-07-05 04:16:40
○A35.167.148.632026-02-19 → 2026-02-24 · 5 obs
○ 2026-02-18 17:35:54
● 2026-02-19 04:13:42
● 2026-02-24 17:16:54
○ 2026-02-28 13:11:14
○ 2026-07-05 04:16:40
○A35.80.113.242026-04-12 → 2026-04-12 · 4 obs
○ 2026-03-24 11:55:16
● 2026-04-12 03:15:00
○ 2026-04-17 03:24:52
○ 2026-07-05 04:16:40
○A35.83.144.1742026-06-26 → 2026-06-26 · 4 obs
○ 2026-06-22 11:27:06
● 2026-06-26 09:29:04
○ 2026-07-04 05:19:34
○ 2026-07-05 04:16:40
○A44.233.226.1082026-05-15 → 2026-05-15 · 4 obs
○ 2026-05-12 19:20:20
● 2026-05-15 06:33:04
○ 2026-06-03 20:05:40
○ 2026-07-05 04:16:40
○A44.233.23.2122026-05-12 → 2026-05-12 · 4 obs
○ 2026-04-17 08:05:02
● 2026-05-12 19:20:20
○ 2026-05-15 06:33:04
○ 2026-07-05 04:16:40
○A44.234.6.1132026-03-24 → 2026-03-24 · 4 obs
○ 2026-03-16 18:12:16
● 2026-03-24 11:55:16
○ 2026-04-12 03:15:00
○ 2026-07-05 04:16:40
○A44.235.181.2102026-04-17 → 2026-04-17 · 5 obs
○ 2026-04-12 03:15:00
● 2026-04-17 03:24:52
● 2026-04-17 08:05:02
○ 2026-05-12 19:20:20
○ 2026-07-05 04:16:40
○A44.237.101.22026-04-17 → 2026-04-17 · 5 obs
○ 2026-04-12 03:15:00
● 2026-04-17 03:24:52
● 2026-04-17 08:05:02
○ 2026-05-12 19:20:20
○ 2026-07-05 04:16:40
●A44.239.197.872026-07-04 → 2026-07-05 · 3 obs
○ 2026-06-26 09:29:04
● 2026-07-04 05:19:34
● 2026-07-05 04:16:40
○A44.254.171.1002026-06-22 → 2026-06-22 · 4 obs
○ 2026-06-03 20:05:40
● 2026-06-22 11:27:06
○ 2026-07-04 05:19:34
○ 2026-07-05 04:16:40
○A50.63.202.402016-09-23 → 2017-04-22 · 5 obs
○ 2016-04-08 03:16:00
● 2016-09-23 14:11:12
● 2017-04-22 18:26:22
○ 2026-02-16 20:54:02
○ 2026-07-05 04:16:40
○A52.10.244.1692026-03-16 → 2026-03-16 · 4 obs
○ 2026-03-01 19:57:02
● 2026-03-16 18:12:16
○ 2026-03-24 11:55:16
○ 2026-07-05 04:16:40
○A52.11.167.672026-02-16 → 2026-02-16 · 4 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
○ 2026-02-18 17:35:54
○ 2026-07-05 04:16:40
○A52.33.221.1082026-02-16 → 2026-02-16 · 4 obs
○ 2017-04-22 18:26:22
● 2026-02-16 20:54:02
○ 2026-02-18 17:35:54
○ 2026-07-05 04:16:40
○A52.33.221.1832026-03-16 → 2026-03-16 · 4 obs
○ 2026-03-01 19:57:02
● 2026-03-16 18:12:16
○ 2026-03-24 11:55:16
○ 2026-07-05 04:16:40
○A52.41.56.1582026-04-12 → 2026-04-12 · 4 obs
○ 2026-03-24 11:55:16
● 2026-04-12 03:15:00
○ 2026-04-17 03:24:52
○ 2026-07-05 04:16:40
○A54.148.227.1032026-05-15 → 2026-05-15 · 4 obs
○ 2026-05-12 19:20:20
● 2026-05-15 06:33:04
○ 2026-06-03 20:05:40
○ 2026-07-05 04:16:40
○A54.148.28.2012026-05-12 → 2026-05-15 · 5 obs
○ 2026-04-17 08:05:02
● 2026-05-12 19:20:20
● 2026-05-15 06:33:04
○ 2026-06-03 20:05:40
○ 2026-07-05 04:16:40
○A54.149.60.622026-02-18 → 2026-02-24 · 5 obs
○ 2026-02-16 20:54:02
● 2026-02-18 17:35:54
● 2026-02-24 17:16:54
○ 2026-02-28 13:11:14
○ 2026-07-05 04:16:40
○A54.149.93.1532026-04-17 → 2026-04-17 · 5 obs
○ 2026-04-12 03:15:00
● 2026-04-17 03:24:52
● 2026-04-17 08:05:02
○ 2026-05-12 19:20:20
○ 2026-07-05 04:16:40
○A54.187.62.1022026-02-28 → 2026-03-01 · 5 obs
○ 2026-02-24 17:16:54
● 2026-02-28 13:11:14
● 2026-03-01 19:57:02
○ 2026-03-16 18:12:16
○ 2026-07-05 04:16:40
○A54.202.243.52026-06-22 → 2026-06-22 · 4 obs
○ 2026-06-03 20:05:40
● 2026-06-22 11:27:06
○ 2026-07-04 05:19:34
○ 2026-07-05 04:16:40
○A54.203.93.1092026-06-03 → 2026-06-03 · 4 obs
○ 2026-05-15 06:33:04
● 2026-06-03 20:05:40
○ 2026-06-22 11:27:06
○ 2026-07-05 04:16:40
○A54.212.55.562026-03-16 → 2026-03-16 · 4 obs
○ 2026-03-01 19:57:02
● 2026-03-16 18:12:16
○ 2026-03-24 11:55:16
○ 2026-07-05 04:16:40
○A54.69.136.1072026-03-24 → 2026-03-24 · 4 obs
○ 2026-03-16 18:12:16
● 2026-03-24 11:55:16
○ 2026-04-12 03:15:00
○ 2026-07-05 04:16:40
○A54.69.89.2142026-06-22 → 2026-06-22 · 4 obs
○ 2026-06-03 20:05:40
● 2026-06-22 11:27:06
○ 2026-06-26 09:29:04
○ 2026-07-05 04:16:40

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
usb.cctld.us, k.cctld.us, x.cctld.us, f.cctld.us...-
workstream.usns-975.awsdns-57.net, ns-2038.awsdns-62.co.uk, ns-101.awsdns-12.com, ns-1515.awsdns-61.org-

✅ Authoritative Response

Server:205.251.192.101

NS records: ns-975.awsdns-57.net, ns-2038.awsdns-62.co.uk, ns-101.awsdns-12.com, ns-1515.awsdns-61.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for workstream.us (unsigned zone)

⏱️ Timing

Total: 1467ms | Queries: -

📄 Records

TypeCountSample Data
A344.239.197.87, 35.162.30.5...
NS4ns-101.awsdns-12.com, ns-1515.awsdns-61.org...
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT17LaUVcCt3JK4G8OiEVrVqm5MehCvvXxv4rsY8lJm3, Ua8pbKk5gOkPp6zRyg_DoZD-d9Um6hZ4X1Ntli5F...
SOA1ns-975.awsdns-57.net awsdns-hostmaster.a

Analysis

Hierarchy

workstream.us is the parent domain of interview.workstream.us, download-docs.workstream.us, dev.workstream.us, www.workstream.us, api-doc.workstream.us and a few other host names.

IP Addresses

workstream.us resolves to three IP addresses: 35.162.30.5, 44.239.197.87 and 184.33.250.114.

Name Servers

The authoritative name servers for workstream.us are ns-101.awsdns-12.com, ns-975.awsdns-57.net, ns-1515.awsdns-61.org and ns-2038.awsdns-62.co.uk.

workstream.us shares at least some of its name servers with other domains, including d1hbv8u3fxxsms.cloudfront.net, wiflasher.com, foozzam.com and two others.

The host names ns-101.awsdns-12.com, ns-975.awsdns-57.net, ns-1515.awsdns-61.org and ns-2038.awsdns-62.co.uk each resolve to two IP addresses: ns-101.awsdns-12.com resolves to 205.251.192.101 and 2600:9000:5300:6500::1; ns-975.awsdns-57.net resolves to 205.251.195.207 and 2600:9000:5303:cf00::1; ns-1515.awsdns-61.org resolves to 205.251.197.235 and 2600:9000:5305:eb00::1; ns-2038.awsdns-62.co.uk resolves to 205.251.199.246 and 2600:9000:5307:f600::1.

Mail Servers

workstream.us is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

workstream.us has at least partial mail server overlap with other domains such as ns500698.ns500759.ns500758.ns500736.ns500735.ns500735.ns500736.ns500698.ns500736.ns500698.ns500576.ns500686.ns500576.trackreceptor.com, edupd.com, cloudma.com and two more.

These mail servers commonly co-occur with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 others.

Hostnames that resolve to two IP addresses:

aspmx.l.google.com maps to two IP addresses — 142.251.16.27 and 2607:f8b0:4004:c1b::1b.

alt1.aspmx.l.google.com maps to two IP addresses — 108.177.123.27 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com maps to two IP addresses — 192.178.223.26 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com maps to two IP addresses — 172.253.157.26 and 2a00:1450:400c:c23::1b.