tablebooker.lu - robtex.com

tablebooker.lu

DNSSECโš ๏ธ Not signed
A13.226.209.76๐Ÿ‡บ๐Ÿ‡ธ Amazon13.226.209.0/24 - Cloudfront
PTRserver-13-226-209-76.iad61.r.cloudfront.net
A13.226.209.98๐Ÿ‡บ๐Ÿ‡ธ Amazon13.226.209.0/24 - Cloudfront
A13.226.209.115๐Ÿ‡บ๐Ÿ‡ธ Amazon13.226.209.0/24 - Cloudfront
A13.226.209.129๐Ÿ‡บ๐Ÿ‡ธ Amazon13.226.209.0/24 - Cloudfront
NSns-1177.awsdns-19.org โญ
A2600:9000:5304:9900::1๐Ÿ‡บ๐Ÿ‡ธ Amazon2600:9000:5304::/48 - CloudFront
PTRns-1177.awsdns-19.org
A205.251.196.153๐Ÿ‡บ๐Ÿ‡ธ Amazon205.251.196.0/24 prefix
PTRns-1177.awsdns-19.org
NSns-150.awsdns-18.com
A2600:9000:5300:9600::1๐Ÿ‡บ๐Ÿ‡ธ Amazon2600:9000:5300::/48 - CloudFront
PTRns-150.awsdns-18.com
A205.251.192.150๐Ÿ‡บ๐Ÿ‡ธ Amazon205.251.192.0/24 prefix
PTRns-150.awsdns-18.com
NSns-1928.awsdns-49.co.uk
A2600:9000:5307:8800::1๐Ÿ‡บ๐Ÿ‡ธ Amazon2600:9000:5307::/48 - CloudFront
PTRns-1928.awsdns-49.co.uk
A205.251.199.136๐Ÿ‡บ๐Ÿ‡ธ Amazon205.251.199.0/24 prefix
PTRns-1928.awsdns-49.co.uk
NSns-678.awsdns-20.net
A2600:9000:5302:a600::1๐Ÿ‡บ๐Ÿ‡ธ Amazon2600:9000:5302::/48 - CloudFront
PTRns-678.awsdns-20.net
A205.251.194.166๐Ÿ‡บ๐Ÿ‡ธ Amazon205.251.194.0/24 prefix
PTRns-678.awsdns-20.net
MXaspmx.l.google.com โญ
A2607:f8b0:4004:c0b::1b๐Ÿ‡บ๐Ÿ‡ธ Google2607:f8b0:4004::/48
PTRbj-in-f27.1e100.net
A172.253.62.26๐Ÿ‡บ๐Ÿ‡ธ Google172.253.62.0/24
PTRbc-in-f26.1e100.net
MXalt1.aspmx.l.google.com(20)
A2800:3f0:4003:c0f::1a๐Ÿ‡จ๐Ÿ‡ฑ Google2800:3f0:4003::/48
A108.177.123.26๐Ÿ‡บ๐Ÿ‡ธ Google108.177.123.0/24
PTRlcscld-in-f26.1e100.net
MXalt2.aspmx.l.google.com(20)
A2a00:1450:400b:c02::1a๐Ÿ‡ฎ๐Ÿ‡ช Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.27๐Ÿ‡บ๐Ÿ‡ธ Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXaspmx2.googlemail.com(30)
A2800:3f0:4003:c0f::1a๐Ÿ‡จ๐Ÿ‡ฑ Google2800:3f0:4003::/48
A108.177.123.27๐Ÿ‡บ๐Ÿ‡ธ Google108.177.123.0/24
PTRlcscld-in-f27.1e100.net
MXaspmx3.googlemail.com(30)
A2a00:1450:400b:c02::1a๐Ÿ‡ฎ๐Ÿ‡ช Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.26๐Ÿ‡บ๐Ÿ‡ธ Google172.253.116.0/24
PTRdj-in-f26.1e100.net
TXTv=spf1 include:_spf.google.com ~all
SOAns-1177.awsdns-19.orgawsdns-hostmaster@amazon.com serial=1

lu

DNSSEC๐Ÿ”’ Signed (DS record present)
NSns1.dns.lu โญ
NSg.dns.lu
NSi.dns.lu
NSj.dns.lu
NSk.dns.lu
NSp.dns.lu
TXTExported: 2026-03-25 11:01:01
SOAns1.dns.lunoc@restena.lu serial=1774432873

Same first word

Similar names

DNS History

25 records (13 active, 12 former)

NSns-1177.awsdns-19.orgns-150.awsdns-18.comns-1928.awsdns-49.co.ukns-678.awsdns-20.netMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA13.226.209.11513.226.209.12913.226.209.7613.226.209.9813.249.91.11413.249.91.11513.249.91.1413.249.91.5613.33.153.12513.33.153.2713.33.153.6313.33.153.843.167.212.1023.167.212.1173.167.212.123.167.212.121
โ—NSns-1177.awsdns-19.org2026-02-15 โ†’ 2026-03-25 ยท 2 obs
โ— 2026-02-15 13:41:50
โ— 2026-03-25 10:46:50
โ—NSns-150.awsdns-18.com2026-02-15 โ†’ 2026-03-25 ยท 2 obs
โ— 2026-02-15 13:41:50
โ— 2026-03-25 10:46:50
โ—NSns-1928.awsdns-49.co.uk2026-02-15 โ†’ 2026-03-25 ยท 2 obs
โ— 2026-02-15 13:41:50
โ— 2026-03-25 10:46:50
โ—NSns-678.awsdns-20.net2026-02-15 โ†’ 2026-03-25 ยท 2 obs
โ— 2026-02-15 13:41:50
โ— 2026-03-25 10:46:50
โ—MXalt1.aspmx.l.google.com2026-02-15 โ†’ 2026-03-25 ยท 2 obs
โ— 2026-02-15 13:41:50
โ— 2026-03-25 10:46:50
โ—MXalt2.aspmx.l.google.com2026-02-15 โ†’ 2026-03-25 ยท 2 obs
โ— 2026-02-15 13:41:50
โ— 2026-03-25 10:46:50
โ—MXaspmx.l.google.com2026-02-15 โ†’ 2026-03-25 ยท 2 obs
โ— 2026-02-15 13:41:50
โ— 2026-03-25 10:46:50
โ—MXaspmx2.googlemail.com2026-02-15 โ†’ 2026-03-25 ยท 2 obs
โ— 2026-02-15 13:41:50
โ— 2026-03-25 10:46:50
โ—MXaspmx3.googlemail.com2026-02-15 โ†’ 2026-03-25 ยท 2 obs
โ— 2026-02-15 13:41:50
โ— 2026-03-25 10:46:50
โ—A13.226.209.1152026-02-15 โ†’ 2026-03-25 ยท 22 obs
โ— 2026-02-15 13:41:50
โ—‹ 2026-02-16 11:02:50
โ— 2026-02-17 08:05:46
โ—‹ 2026-02-17 13:10:06
โ—‹ 2026-03-02 21:07:54
โ— 2026-03-03 01:34:12
โ— 2026-03-05 00:42:26
โ—‹ 2026-03-05 23:56:18
โ— 2026-03-06 02:30:42
โ—‹ 2026-03-06 05:00:04
โ—‹ 2026-03-06 14:20:56
โ— 2026-03-07 02:13:40
โ— 2026-03-07 14:26:02
โ—‹ 2026-03-07 22:06:40
โ—‹ 2026-03-08 03:04:52
โ— 2026-03-10 21:15:48
โ—‹ 2026-03-10 21:49:36
โ— 2026-03-10 23:47:26
โ— 2026-03-11 06:38:02
โ—‹ 2026-03-11 12:41:16
โ—‹ 2026-03-14 17:23:36
โ— 2026-03-25 10:46:50
โ—A13.226.209.1292026-02-15 โ†’ 2026-03-25 ยท 22 obs
โ— 2026-02-15 13:41:50
โ—‹ 2026-02-16 11:02:50
โ— 2026-02-17 08:05:46
โ—‹ 2026-02-17 13:10:06
โ—‹ 2026-03-02 21:07:54
โ— 2026-03-03 01:34:12
โ— 2026-03-05 00:42:26
โ—‹ 2026-03-05 23:56:18
โ— 2026-03-06 02:30:42
โ—‹ 2026-03-06 05:00:04
โ—‹ 2026-03-06 14:20:56
โ— 2026-03-07 02:13:40
โ— 2026-03-07 14:26:02
โ—‹ 2026-03-07 22:06:40
โ—‹ 2026-03-08 03:04:52
โ— 2026-03-10 21:15:48
โ—‹ 2026-03-10 21:49:36
โ— 2026-03-10 23:47:26
โ— 2026-03-11 06:38:02
โ—‹ 2026-03-11 12:41:16
โ—‹ 2026-03-14 17:23:36
โ— 2026-03-25 10:46:50
โ—A13.226.209.762026-02-15 โ†’ 2026-03-25 ยท 22 obs
โ— 2026-02-15 13:41:50
โ—‹ 2026-02-16 11:02:50
โ— 2026-02-17 08:05:46
โ—‹ 2026-02-17 13:10:06
โ—‹ 2026-03-02 21:07:54
โ— 2026-03-03 01:34:12
โ— 2026-03-05 00:42:26
โ—‹ 2026-03-05 23:56:18
โ— 2026-03-06 02:30:42
โ—‹ 2026-03-06 05:00:04
โ—‹ 2026-03-06 14:20:56
โ— 2026-03-07 02:13:40
โ— 2026-03-07 14:26:02
โ—‹ 2026-03-07 22:06:40
โ—‹ 2026-03-08 03:04:52
โ— 2026-03-10 21:15:48
โ—‹ 2026-03-10 21:49:36
โ— 2026-03-10 23:47:26
โ— 2026-03-11 06:38:02
โ—‹ 2026-03-11 12:41:16
โ—‹ 2026-03-14 17:23:36
โ— 2026-03-25 10:46:50
โ—A13.226.209.982026-02-15 โ†’ 2026-03-25 ยท 22 obs
โ— 2026-02-15 13:41:50
โ—‹ 2026-02-16 11:02:50
โ— 2026-02-17 08:05:46
โ—‹ 2026-02-17 13:10:06
โ—‹ 2026-03-02 21:07:54
โ— 2026-03-03 01:34:12
โ— 2026-03-05 00:42:26
โ—‹ 2026-03-05 23:56:18
โ— 2026-03-06 02:30:42
โ—‹ 2026-03-06 05:00:04
โ—‹ 2026-03-06 14:20:56
โ— 2026-03-07 02:13:40
โ— 2026-03-07 14:26:02
โ—‹ 2026-03-07 22:06:40
โ—‹ 2026-03-08 03:04:52
โ— 2026-03-10 21:15:48
โ—‹ 2026-03-10 21:49:36
โ— 2026-03-10 23:47:26
โ— 2026-03-11 06:38:02
โ—‹ 2026-03-11 12:41:16
โ—‹ 2026-03-14 17:23:36
โ— 2026-03-25 10:46:50
โ—‹A13.249.91.1142026-02-16 โ†’ 2026-03-08 ยท 8 obs
โ—‹ 2026-02-15 13:41:50
โ— 2026-02-16 11:02:50
โ—‹ 2026-02-17 08:05:46
โ—‹ 2026-03-07 14:26:02
โ— 2026-03-07 22:06:40
โ— 2026-03-08 03:04:52
โ—‹ 2026-03-10 21:15:48
โ—‹ 2026-03-25 10:46:50
โ—‹A13.249.91.1152026-02-16 โ†’ 2026-03-08 ยท 8 obs
โ—‹ 2026-02-15 13:41:50
โ— 2026-02-16 11:02:50
โ—‹ 2026-02-17 08:05:46
โ—‹ 2026-03-07 14:26:02
โ— 2026-03-07 22:06:40
โ— 2026-03-08 03:04:52
โ—‹ 2026-03-10 21:15:48
โ—‹ 2026-03-25 10:46:50
โ—‹A13.249.91.142026-02-16 โ†’ 2026-03-08 ยท 8 obs
โ—‹ 2026-02-15 13:41:50
โ— 2026-02-16 11:02:50
โ—‹ 2026-02-17 08:05:46
โ—‹ 2026-03-07 14:26:02
โ— 2026-03-07 22:06:40
โ— 2026-03-08 03:04:52
โ—‹ 2026-03-10 21:15:48
โ—‹ 2026-03-25 10:46:50
โ—‹A13.249.91.562026-02-16 โ†’ 2026-03-08 ยท 8 obs
โ—‹ 2026-02-15 13:41:50
โ— 2026-02-16 11:02:50
โ—‹ 2026-02-17 08:05:46
โ—‹ 2026-03-07 14:26:02
โ— 2026-03-07 22:06:40
โ— 2026-03-08 03:04:52
โ—‹ 2026-03-10 21:15:48
โ—‹ 2026-03-25 10:46:50
โ—‹A13.33.153.1252026-02-17 โ†’ 2026-03-14 ยท 17 obs
โ—‹ 2026-02-17 13:10:06
โ— 2026-02-17 14:36:48
โ— 2026-02-18 00:11:38
โ—‹ 2026-02-19 02:08:48
โ— 2026-02-19 12:29:54
โ—‹ 2026-02-20 16:46:18
โ— 2026-02-20 17:18:06
โ— 2026-03-02 21:07:54
โ—‹ 2026-03-03 01:34:12
โ—‹ 2026-03-06 05:00:04
โ— 2026-03-06 07:56:14
โ— 2026-03-06 14:20:56
โ—‹ 2026-03-07 02:13:40
โ—‹ 2026-03-11 06:38:02
โ— 2026-03-11 12:41:16
โ— 2026-03-14 17:23:36
โ—‹ 2026-03-25 10:46:50
โ—‹A13.33.153.272026-02-17 โ†’ 2026-03-14 ยท 17 obs
โ—‹ 2026-02-17 13:10:06
โ— 2026-02-17 14:36:48
โ— 2026-02-18 00:11:38
โ—‹ 2026-02-19 02:08:48
โ— 2026-02-19 12:29:54
โ—‹ 2026-02-20 16:46:18
โ— 2026-02-20 17:18:06
โ— 2026-03-02 21:07:54
โ—‹ 2026-03-03 01:34:12
โ—‹ 2026-03-06 05:00:04
โ— 2026-03-06 07:56:14
โ— 2026-03-06 14:20:56
โ—‹ 2026-03-07 02:13:40
โ—‹ 2026-03-11 06:38:02
โ— 2026-03-11 12:41:16
โ— 2026-03-14 17:23:36
โ—‹ 2026-03-25 10:46:50
โ—‹A13.33.153.632026-02-17 โ†’ 2026-03-14 ยท 17 obs
โ—‹ 2026-02-17 13:10:06
โ— 2026-02-17 14:36:48
โ— 2026-02-18 00:11:38
โ—‹ 2026-02-19 02:08:48
โ— 2026-02-19 12:29:54
โ—‹ 2026-02-20 16:46:18
โ— 2026-02-20 17:18:06
โ— 2026-03-02 21:07:54
โ—‹ 2026-03-03 01:34:12
โ—‹ 2026-03-06 05:00:04
โ— 2026-03-06 07:56:14
โ— 2026-03-06 14:20:56
โ—‹ 2026-03-07 02:13:40
โ—‹ 2026-03-11 06:38:02
โ— 2026-03-11 12:41:16
โ— 2026-03-14 17:23:36
โ—‹ 2026-03-25 10:46:50
โ—‹A13.33.153.842026-02-17 โ†’ 2026-03-14 ยท 17 obs
โ—‹ 2026-02-17 13:10:06
โ— 2026-02-17 14:36:48
โ— 2026-02-18 00:11:38
โ—‹ 2026-02-19 02:08:48
โ— 2026-02-19 12:29:54
โ—‹ 2026-02-20 16:46:18
โ— 2026-02-20 17:18:06
โ— 2026-03-02 21:07:54
โ—‹ 2026-03-03 01:34:12
โ—‹ 2026-03-06 05:00:04
โ— 2026-03-06 07:56:14
โ— 2026-03-06 14:20:56
โ—‹ 2026-03-07 02:13:40
โ—‹ 2026-03-11 06:38:02
โ— 2026-03-11 12:41:16
โ— 2026-03-14 17:23:36
โ—‹ 2026-03-25 10:46:50
โ—‹A3.167.212.1022026-02-17 โ†’ 2026-03-10 ยท 17 obs
โ—‹ 2026-02-17 08:05:46
โ— 2026-02-17 13:10:06
โ—‹ 2026-02-17 14:36:48
โ—‹ 2026-02-18 00:11:38
โ— 2026-02-19 02:08:48
โ—‹ 2026-02-19 12:29:54
โ— 2026-02-20 16:46:18
โ—‹ 2026-02-20 17:18:06
โ—‹ 2026-03-05 00:42:26
โ— 2026-03-05 23:56:18
โ—‹ 2026-03-06 02:30:42
โ— 2026-03-06 05:00:04
โ—‹ 2026-03-06 07:56:14
โ—‹ 2026-03-10 21:15:48
โ— 2026-03-10 21:49:36
โ—‹ 2026-03-10 23:47:26
โ—‹ 2026-03-25 10:46:50
โ—‹A3.167.212.1172026-02-17 โ†’ 2026-03-10 ยท 17 obs
โ—‹ 2026-02-17 08:05:46
โ— 2026-02-17 13:10:06
โ—‹ 2026-02-17 14:36:48
โ—‹ 2026-02-18 00:11:38
โ— 2026-02-19 02:08:48
โ—‹ 2026-02-19 12:29:54
โ— 2026-02-20 16:46:18
โ—‹ 2026-02-20 17:18:06
โ—‹ 2026-03-05 00:42:26
โ— 2026-03-05 23:56:18
โ—‹ 2026-03-06 02:30:42
โ— 2026-03-06 05:00:04
โ—‹ 2026-03-06 07:56:14
โ—‹ 2026-03-10 21:15:48
โ— 2026-03-10 21:49:36
โ—‹ 2026-03-10 23:47:26
โ—‹ 2026-03-25 10:46:50
โ—‹A3.167.212.122026-02-17 โ†’ 2026-03-10 ยท 17 obs
โ—‹ 2026-02-17 08:05:46
โ— 2026-02-17 13:10:06
โ—‹ 2026-02-17 14:36:48
โ—‹ 2026-02-18 00:11:38
โ— 2026-02-19 02:08:48
โ—‹ 2026-02-19 12:29:54
โ— 2026-02-20 16:46:18
โ—‹ 2026-02-20 17:18:06
โ—‹ 2026-03-05 00:42:26
โ— 2026-03-05 23:56:18
โ—‹ 2026-03-06 02:30:42
โ— 2026-03-06 05:00:04
โ—‹ 2026-03-06 07:56:14
โ—‹ 2026-03-10 21:15:48
โ— 2026-03-10 21:49:36
โ—‹ 2026-03-10 23:47:26
โ—‹ 2026-03-25 10:46:50
โ—‹A3.167.212.1212026-02-17 โ†’ 2026-03-10 ยท 17 obs
โ—‹ 2026-02-17 08:05:46
โ— 2026-02-17 13:10:06
โ—‹ 2026-02-17 14:36:48
โ—‹ 2026-02-18 00:11:38
โ— 2026-02-19 02:08:48
โ—‹ 2026-02-19 12:29:54
โ— 2026-02-20 16:46:18
โ—‹ 2026-02-20 17:18:06
โ—‹ 2026-03-05 00:42:26
โ— 2026-03-05 23:56:18
โ—‹ 2026-03-06 02:30:42
โ— 2026-03-06 05:00:04
โ—‹ 2026-03-06 07:56:14
โ—‹ 2026-03-10 21:15:48
โ— 2026-03-10 21:49:36
โ—‹ 2026-03-10 23:47:26
โ—‹ 2026-03-25 10:46:50

๐Ÿ” DNS Trace

๐Ÿ“‹ Delegation Chain

ZoneNameserversGlue
lug.dns.lu, p.dns.lu, j.dns.lu, k.dns.lu...12 records
tablebooker.luns-150.awsdns-18.com, ns-678.awsdns-20.net, ns-1177.awsdns-19.org, ns-1928.awsdns-49.co.uk-

โœ… Authoritative Response

Server:205.251.199.136

NS records: ns-150.awsdns-18.com, ns-678.awsdns-20.net, ns-1177.awsdns-19.org, ns-1928.awsdns-49.co.uk

๐Ÿ”’ DNSSEC Status

โš ๏ธ Insecure (no DNSSEC)

No DS record for tablebooker.lu (unsigned zone)

โฑ๏ธ Timing

Total: 845ms | Queries: -

๐Ÿ“„ Records

TypeCountSample Data
A413.226.209.115, 13.226.209.129...
NS4ns-1177.awsdns-19.org, ns-150.awsdns-18.com...
MX5aspmx.l.google.com (pri: 10), alt1.aspmx.l.google.com (pri: 20)...
TXT1v=spf1 include:_spf.google.com ~all
SOA1ns-1177.awsdns-19.org awsdns-hostmaster.

๐Ÿ“Œ Glue Records Collected

Total: 12

In-bailiwick: 12 (ns1.dns.lu, p.dns.lu, k.dns.lu...)

Analysis

IP Addresses

tablebooker.lu maps to four IP numbers: 13.226.209.76, 13.226.209.98, 13.226.209.115 and 13.226.209.129.

Other host names such as factorsof18.com, design.easelive.tv, zndance.com, org.downloads.release.build.10gen.cc and julie.de share IPs with tablebooker.lu.

Name Servers

tablebooker.lu is delegated to four name servers: ns-150.awsdns-18.com, ns-678.awsdns-20.net, ns-1177.awsdns-19.org and ns-1928.awsdns-49.co.uk.

tablebooker.lu at least partially shares name servers with other domains, for example afsmarine.co.nz, nutalent.co, dya6fkhz7a75q.cloudfront.net, corporatecaterersofwichita.com and electrolyte.ch.

These name servers are commonly used with ns-1390.awsdns-45.org and ns-507.awsdns-63.com and ns-2022.awsdns-60.co.uk.

Host names with two IP numbers:

ns-150.awsdns-18.com points to: 2600:9000:5300:9600::1 and 205.251.192.150

ns-678.awsdns-20.net points to: 2600:9000:5302:a600::1 and 205.251.194.166

ns-1177.awsdns-19.org points to: 2600:9000:5304:9900::1 and 205.251.196.153

ns-1928.awsdns-49.co.uk points to: 2600:9000:5307:8800::1 and 205.251.199.136

Mail Servers

tablebooker.lu is handled by five mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.

tablebooker.lu shares at least partially some mail servers with other domains, for instance ns500731.ns500754.ns500731.ns500731.ns500671.ns500671.ns500688.ns500705.ns500705.ns500705.ns500649.ns500688.ns500671.ns500649.lustychickser.com, jctips.com, taxmachine.pl, ns500742.ns500731.ns500671.ns500754.ns500742.ns500671.ns500742.ns500704.ns500742.ns500705.ns500678.ns500666.ns500291.ns500291.ns500291.ns500291.ns500131.lustychickser.com and ns500765.ns500765.ns500699.ns500734.ns500734.ns500734.ns500734.ns500683.ns500693.ns500693.ns500683.ns500578.ns500110.dtrkdll.com.

these mail servers are often used together with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx4.googlemail.com and aspmx5.googlemail.com.

Host names with two IPs

The host name aspmx2.googlemail.com points to 2800:3f0:4003:c0f::1a and 108.177.123.27.

The host name aspmx3.googlemail.com points to 2a00:1450:400b:c02::1a and 172.253.116.26.

The host name aspmx.l.google.com points to 2607:f8b0:4004:c0b::1b and 172.253.62.26.

The host name alt1.aspmx.l.google.com points to 2800:3f0:4003:c0f::1a and 108.177.123.26.

The host name alt2.aspmx.l.google.com points to 2a00:1450:400b:c02::1a and 172.253.116.27.

Host names pointing to 2800:3f0:4003:c0f::1a are aspmx2.googlemail.com and alt1.aspmx.l.google.com.

Host names pointing to 2a00:1450:400b:c02::1a are aspmx3.googlemail.com and alt2.aspmx.l.google.com.

Common IPs: 2800:3f0:4003:c0f::1a used by aspmx2.googlemail.com and alt1.aspmx.l.google.com; 2a00:1450:400b:c02::1a used by aspmx3.googlemail.com and alt2.aspmx.l.google.com.