Enter host name or IP address:
188 result(s) for
ns4.bizflycloud.vn
name
query type
result
first seen
last seen
umba.la.
NS
ns4.bizflycloud.vn.
2021-10-09 03:06:17
2021-10-09 03:06:17
umba.la.
NS
ns5.bizflycloud.vn.
2021-10-09 03:06:17
2021-10-09 03:06:17
umba.la.
NS
ns6.bizflycloud.vn.
2021-10-09 03:06:17
2021-10-09 03:06:17
taichinh365.com.
NS
ns4.bizflycloud.vn.
2021-10-16 05:51:48
2021-10-16 05:51:48
taichinh365.com.
A
139.162.35.209
[
AS63949
][
I
]
2025-04-11 13:30:10
2025-04-11 13:30:10
taichinh365.com.
NS
igor.ns.cloudflare.com.
2024-12-24 03:39:52
2025-04-11 13:30:09
taichinh365.com.
NS
kami.ns.cloudflare.com.
2024-12-24 03:39:52
2025-04-11 13:30:09
taichinh365.com.
NS
ns5.bizflycloud.vn.
2021-10-16 05:51:48
2021-10-16 05:51:48
taichinh365.com.
NS
ns6.bizflycloud.vn.
2021-10-16 05:51:48
2021-10-16 05:51:48
ns4.bizflycloud.vn.
A
42.112.37.60
[
AS18403
][
I
]
2021-11-05 20:21:28
2025-09-21 13:31:49
prebuilt-app.bfcplatform.vn.
NS
ns4.bizflycloud.vn.
2021-12-21 11:43:15
2025-08-25 17:18:52
prebuilt-app.bfcplatform.vn.
NS
ns5.bizflycloud.vn.
2021-12-21 11:43:15
2025-08-25 17:18:52
prebuilt-app.bfcplatform.vn.
NS
ns6.bizflycloud.vn.
2021-12-21 11:43:15
2025-08-25 17:18:52
tingavu.dev.
NS
ns4.bizflycloud.vn.
2021-12-25 07:16:39
2025-04-10 21:30:45
tingavu.dev.
A
103.153.73.228
[
AS135905
][
I
]
2023-02-14 15:55:28
2023-02-14 15:55:28
tingavu.dev.
NS
ns5.bizflycloud.vn.
2021-12-25 07:16:39
2025-04-10 21:30:45
tingavu.dev.
NS
ns6.bizflycloud.vn.
2021-12-25 07:16:39
2025-04-10 21:30:45
tmproxy-infra.com.
NS
ns4.bizflycloud.vn.
2021-12-25 16:01:56
2024-07-22 00:47:41
tmproxy-infra.com.
NS
dnssec1.pavietnam.vn.
2025-06-02 20:13:04
2025-06-02 20:13:04
tmproxy-infra.com.
NS
dnssec2.pavietnam.vn.
2025-06-02 20:13:04
2025-06-02 20:13:04
tmproxy-infra.com.
NS
dnssecbak.pavietnam.net.
2025-06-02 20:13:04
2025-06-02 20:13:04
tmproxy-infra.com.
NS
ns5.bizflycloud.vn.
2021-12-25 16:01:56
2024-07-22 00:47:41
tmproxy-infra.com.
NS
ns6.bizflycloud.vn.
2021-12-25 16:01:56
2024-07-22 00:47:41
fahasa.com.vn.
NS
ns4.bizflycloud.vn.
2021-12-27 20:29:47
2022-12-10 20:34:12
fahasa.com.vn.
A
103.160.89.236
[
I
]
2022-01-18 21:14:10
2022-01-18 21:14:10
fahasa.com.vn.
A
203.162.54.8
[
AS45899
][
I
]
2022-12-10 20:34:12
2022-12-10 20:34:12
fahasa.com.vn.
NS
ns5.bizflycloud.vn.
2021-12-27 20:29:47
2022-12-10 20:34:12
fahasa.com.vn.
NS
ns6.bizflycloud.vn.
2021-12-27 20:29:48
2022-12-10 20:34:12
greatentertainment.vn.
NS
ns4.bizflycloud.vn.
2021-12-31 03:33:20
2022-04-14 03:10:43
greatentertainment.vn.
A
123.30.234.220
[
AS45899
][
I
]
2022-04-14 03:10:43
2022-04-14 03:10:43
greatentertainment.vn.
NS
ns5.bizflycloud.vn.
2021-12-31 03:33:20
2022-04-14 03:10:43
greatentertainment.vn.
NS
ns6.bizflycloud.vn.
2021-12-31 03:33:20
2022-04-14 03:10:43
trungkien9x.ga.
NS
ns4.bizflycloud.vn.
2022-01-04 00:57:58
2022-01-04 00:57:58
trungkien9x.ga.
NS
ns5.bizflycloud.vn.
2022-01-04 00:57:58
2022-01-04 00:57:58
trungkien9x.ga.
NS
ns6.bizflycloud.vn.
2022-01-04 00:57:58
2022-01-04 00:57:58
oto360.net.
NS
ns4.bizflycloud.vn.
2022-01-18 17:33:32
2025-08-08 12:14:42
oto360.net.
A
103.153.73.94
[
AS135905
][
I
]
2022-12-24 18:02:37
2023-01-17 03:26:45
oto360.net.
NS
ns5.bizflycloud.vn.
2022-01-18 17:33:32
2025-08-08 12:14:42
oto360.net.
NS
ns6.bizflycloud.vn.
2022-01-18 17:33:32
2025-08-08 12:14:42
mcom.vn.
NS
ns4.bizflycloud.vn.
2022-02-24 07:26:46
2023-01-08 23:01:15
mcom.vn.
A
103.153.73.66
[
AS135905
][
I
]
2022-04-13 10:13:16
2023-01-08 23:01:15
mcom.vn.
NS
ns5.bizflycloud.vn.
2022-02-24 07:26:46
2023-01-08 23:01:15
mcom.vn.
NS
ns6.bizflycloud.vn.
2022-02-24 07:26:46
2023-01-08 23:01:15
skyx.vn.
NS
ns4.bizflycloud.vn.
2022-02-28 18:39:25
2022-06-28 13:41:06
skyx.vn.
NS
ns5.bizflycloud.vn.
2022-02-28 18:39:25
2022-06-28 13:41:06
skyx.vn.
NS
ns6.bizflycloud.vn.
2022-02-28 18:39:25
2022-06-28 13:41:06
eso.com.vn.
NS
ns4.bizflycloud.vn.
2022-03-18 09:09:38
2023-01-20 23:44:40
eso.com.vn.
NS
ns5.bizflycloud.vn.
2022-03-18 09:09:38
2023-01-20 23:44:40
eso.com.vn.
NS
ns6.bizflycloud.vn.
2022-03-18 09:09:38
2023-01-20 23:44:40
rezolabs.com.
NS
ns4.bizflycloud.vn.
2022-03-19 11:10:40
2023-02-25 16:31:51
rezolabs.com.
NS
brett.ns.cloudflare.com.
2024-10-03 17:59:53
2025-09-05 02:32:21
rezolabs.com.
NS
evangeline.ns.cloudflare.com.
2024-10-03 17:59:53
2025-09-05 02:32:21
rezolabs.com.
NS
ns5.bizflycloud.vn.
2022-03-19 11:10:40
2023-02-25 16:31:51
rezolabs.com.
NS
ns6.bizflycloud.vn.
2022-03-19 11:10:40
2023-02-25 16:31:51
onfc.vn.
NS
ns4.bizflycloud.vn.
2022-03-20 03:42:42
2023-11-25 20:48:47
onfc.vn.
NS
ns5.bizflycloud.vn.
2022-03-20 03:42:42
2023-11-25 20:48:47
onfc.vn.
NS
ns6.bizflycloud.vn.
2022-03-20 03:42:42
2023-11-25 20:48:47
legiaict.com.
NS
ns4.bizflycloud.vn.
2022-07-04 11:20:54
2025-09-21 13:31:45
legiaict.com.
A
45.252.250.30
[
AS63760
][
I
]
2025-09-21 13:31:50
2025-09-21 13:31:50
legiaict.com.
NS
ns5.bizflycloud.vn.
2022-07-04 11:20:54
2025-09-21 13:31:45
legiaict.com.
NS
ns6.bizflycloud.vn.
2022-07-04 11:20:54
2025-09-21 13:31:45
ops.vccloud.vn.
NS
ns4.bizflycloud.vn.
2022-12-25 00:48:15
2025-04-10 17:16:51
ops.vccloud.vn.
NS
ns5.bizflycloud.vn.
2022-12-25 00:48:15
2025-04-10 17:16:51
ops.vccloud.vn.
NS
ns6.bizflycloud.vn.
2022-12-25 00:48:15
2025-04-10 17:16:51
kientruchcong.com.
NS
ns4.bizflycloud.vn.
2023-01-22 12:56:09
2023-01-22 12:56:10
kientruchcong.com.
A
103.109.43.15
[
AS135905
][
I
]
2023-01-22 12:56:10
2023-01-22 12:56:10
kientruchcong.com.
NS
ns5.bizflycloud.vn.
2023-01-22 12:56:09
2023-01-22 12:56:10
kientruchcong.com.
NS
ns6.bizflycloud.vn.
2023-01-22 12:56:09
2023-01-22 12:56:10
daugiabtn.com.
NS
ns4.bizflycloud.vn.
2023-01-25 22:24:57
2025-05-10 02:07:00
daugiabtn.com.
A
117.4.245.222
[
AS7552
][
I
]
2021-07-19 11:37:57
2021-07-19 11:37:57
daugiabtn.com.
A
45.124.94.113
[
AS45899
][
I
]
2023-04-02 11:09:18
2023-04-02 11:09:18
daugiabtn.com.
NS
ns1.linode.com.
2021-07-19 11:37:57
2021-07-19 11:37:57
daugiabtn.com.
NS
ns2.linode.com.
2021-07-19 11:37:57
2021-07-19 11:37:57
daugiabtn.com.
NS
ns3.linode.com.
2021-07-19 11:37:57
2021-07-19 11:37:57
daugiabtn.com.
NS
ns4.linode.com.
2021-07-19 11:37:57
2021-07-19 11:37:57
daugiabtn.com.
NS
ns5.bizflycloud.vn.
2023-01-25 22:24:57
2025-05-10 02:07:00
daugiabtn.com.
NS
ns5.linode.com.
2021-07-19 11:37:57
2021-07-19 11:37:57
daugiabtn.com.
NS
ns6.bizflycloud.vn.
2023-01-25 22:24:57
2025-05-10 02:07:00
ad.bfcplatform.vn.
NS
ns4.bizflycloud.vn.
2023-02-21 15:57:10
2023-02-28 16:33:21
ad.bfcplatform.vn.
NS
ns5.bizflycloud.vn.
2023-02-21 15:57:10
2023-02-28 16:33:21
ad.bfcplatform.vn.
NS
ns6.bizflycloud.vn.
2023-02-21 15:57:10
2023-02-28 16:33:21
dev.bizflycloud.vn.
NS
ns4.bizflycloud.vn.
2023-03-20 14:25:24
2025-06-02 10:21:41
dev.bizflycloud.vn.
NS
ns5.bizflycloud.vn.
2023-03-20 14:25:24
2025-06-02 10:21:41
dev.bizflycloud.vn.
NS
ns6.bizflycloud.vn.
2023-03-20 14:25:24
2025-06-02 10:21:41
mindx.edu.vn.
NS
ns4.bizflycloud.vn.
2023-05-16 19:42:34
2025-10-09 04:12:53
mindx.edu.vn.
A
45.117.83.246
[
AS131353
][
I
]
2022-12-08 20:30:43
2022-12-08 20:30:43
mindx.edu.vn.
MX
1 aspmx.l.google.com.
2025-02-19 15:29:41
2025-02-19 15:29:41
mindx.edu.vn.
MX
10 alt3.aspmx.l.google.com.
2025-02-19 15:29:41
2025-02-19 15:29:41
mindx.edu.vn.
MX
10 alt4.aspmx.l.google.com.
2025-02-19 15:29:41
2025-02-19 15:29:41
mindx.edu.vn.
MX
5 alt1.aspmx.l.google.com.
2025-02-19 15:29:41
2025-02-19 15:29:41
mindx.edu.vn.
MX
5 alt2.aspmx.l.google.com.
2025-02-19 15:29:41
2025-02-19 15:29:41
mindx.edu.vn.
NS
ns-hold.vnnic.vn.
2022-03-12 23:47:25
2022-03-12 23:47:25
mindx.edu.vn.
NS
ns.viettelidc.com.vn.
2022-02-08 05:38:44
2025-10-09 04:12:53
mindx.edu.vn.
NS
ns1.viettelidc.com.vn.
2022-01-15 05:29:12
2025-10-09 04:12:53
mindx.edu.vn.
NS
ns2.viettelidc.com.vn.
2022-01-15 05:29:12
2025-10-09 04:12:53
mindx.edu.vn.
NS
ns5.bizflycloud.vn.
2023-05-16 19:42:34
2025-10-09 04:12:53
mindx.edu.vn.
NS
ns6.bizflycloud.vn.
2023-05-16 19:42:34
2025-10-09 04:12:53
mindx.edu.vn.
NS
ruben.ns.cloudflare.com.
2022-02-08 05:38:44
2022-03-03 00:36:23
mindx.edu.vn.
NS
vida.ns.cloudflare.com.
2022-02-08 05:38:44
2022-03-03 00:36:23
mindx.vn.
NS
ns4.bizflycloud.vn.
2023-07-08 13:26:03
2025-07-17 06:50:05
mindx.vn.
A
45.117.83.246
[
AS131353
][
I
]
2023-07-08 13:26:34
2023-07-08 13:26:34
mindx.vn.
NS
ns-hold.vnnic.vn.
2022-03-12 23:47:37
2022-03-12 23:47:37
mindx.vn.
NS
ns.viettelidc.com.vn.
2022-02-28 22:05:53
2025-07-17 06:50:05
mindx.vn.
NS
ns1.viettelidc.com.vn.
2022-02-28 22:05:48
2025-07-17 06:50:05
mindx.vn.
NS
ns2.viettelidc.com.vn.
2022-02-28 22:05:48
2025-07-17 06:50:05
mindx.vn.
NS
ns5.bizflycloud.vn.
2023-07-08 13:26:04
2025-07-17 06:50:05
mindx.vn.
NS
ns6.bizflycloud.vn.
2023-07-08 13:26:04
2025-07-17 06:50:05
led6g.com.
NS
ns4.bizflycloud.vn.
2023-07-17 07:42:56
2025-04-08 16:23:51
led6g.com.
A
103.176.178.116
[
AS131353
][
I
]
2022-10-19 14:57:15
2022-10-19 14:57:15
led6g.com.
NS
ns1.dns-parking.com.
2022-10-19 14:57:14
2023-05-17 12:50:10
led6g.com.
NS
ns2.dns-parking.com.
2022-10-19 14:57:14
2023-05-17 12:50:10
led6g.com.
NS
ns5.bizflycloud.vn.
2023-07-17 07:42:56
2025-04-08 16:23:51
led6g.com.
NS
ns6.bizflycloud.vn.
2023-07-17 07:42:56
2025-04-08 16:23:51
vinance.app.
NS
ns4.bizflycloud.vn.
2023-12-12 12:08:10
2025-04-08 16:41:19
vinance.app.
NS
ns1.digitalocean.com.
2023-03-07 22:17:29
2023-03-07 22:17:29
vinance.app.
NS
ns2.digitalocean.com.
2023-03-07 22:17:29
2023-03-07 22:17:29
vinance.app.
NS
ns3.digitalocean.com.
2023-03-07 22:17:29
2023-03-07 22:17:29
vinance.app.
NS
ns5.bizflycloud.vn.
2023-12-12 12:08:10
2025-04-08 16:41:19
vinance.app.
NS
ns6.bizflycloud.vn.
2023-12-12 12:08:10
2025-04-08 16:41:19
123office.vn.
NS
ns4.bizflycloud.vn.
2024-01-14 15:31:36
2024-01-14 15:31:36
123office.vn.
NS
ns5.bizflycloud.vn.
2024-01-14 15:31:36
2024-01-14 15:31:36
123office.vn.
NS
ns6.bizflycloud.vn.
2024-01-14 15:31:36
2024-01-14 15:31:36
alphabotics.vn.
NS
ns4.bizflycloud.vn.
2024-08-06 02:32:40
2024-10-16 02:05:34
alphabotics.vn.
NS
ns5.bizflycloud.vn.
2024-08-06 02:32:40
2024-10-16 02:05:34
alphabotics.vn.
NS
ns6.bizflycloud.vn.
2024-08-06 02:32:40
2024-10-16 02:05:34
chinhhangonline.com.
NS
ns4.bizflycloud.vn.
2024-09-04 02:05:11
2024-09-04 02:05:11
chinhhangonline.com.
NS
ns5.bizflycloud.vn.
2024-09-04 02:05:11
2024-09-04 02:05:11
chinhhangonline.com.
NS
ns6.bizflycloud.vn.
2024-09-04 02:05:11
2024-09-04 02:05:11
ieltsify.app.
NS
ns4.bizflycloud.vn.
2024-10-01 04:37:36
2024-12-26 07:42:23
ieltsify.app.
NS
ns5.bizflycloud.vn.
2024-10-01 04:37:36
2024-12-26 07:42:23
ieltsify.app.
NS
ns6.bizflycloud.vn.
2024-10-01 04:37:36
2024-12-26 07:42:23
mutxopnamphuong.com.
NS
ns4.bizflycloud.vn.
2024-10-02 00:41:05
2025-09-26 18:20:09
mutxopnamphuong.com.
A
103.69.193.72
[
AS45899
][
I
]
2025-09-26 18:20:13
2025-09-26 18:20:13
mutxopnamphuong.com.
NS
ns5.bizflycloud.vn.
2024-10-02 00:41:05
2025-09-26 18:20:09
mutxopnamphuong.com.
NS
ns6.bizflycloud.vn.
2024-10-02 00:41:05
2025-09-26 18:20:09
algoproxy.app.
NS
ns4.bizflycloud.vn.
2024-10-06 02:53:20
2025-01-28 01:43:24
algoproxy.app.
NS
ns5.bizflycloud.vn.
2024-10-06 02:53:20
2025-01-28 01:43:24
campaignist.app.
NS
ns4.bizflycloud.vn.
2024-10-07 13:17:19
2025-02-02 12:47:47
campaignist.app.
NS
ns5.bizflycloud.vn.
2024-10-07 13:17:19
2025-02-02 12:47:47
campaignist.app.
NS
ns6.bizflycloud.vn.
2024-10-07 13:17:19
2025-02-02 12:47:47
sieuthibanvenhadep.com.
NS
ns4.bizflycloud.vn.
2024-10-11 20:29:29
2024-10-11 20:29:29
sieuthibanvenhadep.com.
NS
ns5.bizflycloud.vn.
2024-10-11 20:29:29
2024-10-11 20:29:29
sieuthibanvenhadep.com.
NS
ns6.bizflycloud.vn.
2024-10-11 20:29:29
2024-10-11 20:29:29
donghotuanhung.com.
NS
ns4.bizflycloud.vn.
2024-11-16 07:18:19
2025-09-21 09:01:17
donghotuanhung.com.
A
123.31.39.244
[
AS135905
][
I
]
2025-09-21 09:01:27
2025-09-21 09:01:27
donghotuanhung.com.
NS
ns5.bizflycloud.vn.
2024-11-16 07:18:19
2025-09-21 09:01:17
donghotuanhung.com.
NS
ns6.bizflycloud.vn.
2024-11-16 07:18:19
2025-09-21 09:01:18
v-xs.com.
NS
ns4.bizflycloud.vn.
2024-11-17 06:26:53
2025-06-02 11:56:28
v-xs.com.
A
3.64.163.50
[
AS16509
][
I
]
2022-03-30 03:17:55
2022-03-30 03:17:55
v-xs.com.
NS
ns1.dan.com.
2022-03-30 03:17:54
2022-03-30 03:17:55
v-xs.com.
NS
ns1.parkingcrew.net.
2024-01-20 04:15:41
2024-01-20 04:15:41
v-xs.com.
NS
ns2.dan.com.
2022-03-30 03:17:54
2022-03-30 03:17:55
v-xs.com.
NS
ns2.parkingcrew.net.
2024-01-20 04:15:41
2024-01-20 04:15:41
v-xs.com.
NS
ns5.bizflycloud.vn.
2024-11-17 06:26:53
2025-06-02 11:56:28
v-xs.com.
NS
ns6.bizflycloud.vn.
2024-11-17 06:26:53
2025-06-02 11:56:28
lamth.click.
NS
ns4.bizflycloud.vn.
2024-12-05 11:42:57
2024-12-05 11:42:57
lamth.click.
NS
ns5.bizflycloud.vn.
2024-12-05 11:42:57
2024-12-05 11:42:57
lamth.click.
NS
ns6.bizflycloud.vn.
2024-12-05 11:42:57
2024-12-05 11:42:57
lenhdientu.vn.
NS
ns4.bizflycloud.vn.
2024-12-08 17:01:36
2024-12-08 17:01:36
lenhdientu.vn.
NS
ns1.luutruso.vn.
2022-01-24 20:04:56
2022-01-24 20:04:56
lenhdientu.vn.
NS
ns2.luutruso.vn.
2022-01-24 20:04:56
2022-01-24 20:04:56
lenhdientu.vn.
NS
ns5.bizflycloud.vn.
2024-12-08 17:01:36
2024-12-08 17:01:36
lenhdientu.vn.
NS
ns6.bizflycloud.vn.
2024-12-08 17:01:36
2024-12-08 17:01:36
lenhdientu.vn.
NS
nsbak.luutruso.net.
2022-01-24 20:04:56
2022-01-24 20:04:56
cdn.bfcplatform.vn.
NS
ns4.bizflycloud.vn.
2024-12-28 10:56:32
2025-04-22 10:19:39
cdn.bfcplatform.vn.
NS
ns5.bizflycloud.vn.
2024-12-28 10:56:32
2025-04-22 10:19:39
cdn.bfcplatform.vn.
NS
ns6.bizflycloud.vn.
2024-12-28 10:56:32
2025-04-22 10:19:40
anhvanthayha.com.
NS
ns4.bizflycloud.vn.
2025-01-22 13:54:01
2025-04-08 05:03:02
anhvanthayha.com.
NS
ns.inmotionhosting.com.
2022-05-30 16:31:54
2025-04-08 05:03:02
anhvanthayha.com.
NS
ns2.inmotionhosting.com.
2022-05-30 16:31:54
2025-04-08 05:03:02
anhvanthayha.com.
NS
ns5.bizflycloud.vn.
2025-01-22 13:54:01
2025-04-08 05:03:02
anhvanthayha.com.
NS
ns6.bizflycloud.vn.
2025-01-22 13:54:01
2025-04-08 05:03:02
vctest.cloud.
NS
ns4.bizflycloud.vn.
2025-01-25 19:55:54
2025-01-25 19:55:54
vctest.cloud.
NS
ns5.bizflycloud.vn.
2025-01-25 19:55:54
2025-01-25 19:55:54
vctest.cloud.
NS
ns6.bizflycloud.vn.
2025-01-25 19:55:54
2025-01-25 19:55:54
maytinhdalat.com.
NS
ns4.bizflycloud.vn.
2025-02-02 10:01:33
2025-04-07 17:40:37
maytinhdalat.com.
A
45.252.250.78
[
AS63760
][
I
]
2025-09-09 01:13:05
2025-09-09 01:13:05
maytinhdalat.com.
NS
ns5.bizflycloud.vn.
2025-02-02 10:01:33
2025-04-07 17:40:37
maytinhdalat.com.
NS
ns6.bizflycloud.vn.
2025-02-02 10:01:33
2025-04-07 17:40:37
sau7h.com.
NS
ns4.bizflycloud.vn.
2025-05-19 08:56:52
2025-07-09 23:48:14
sau7h.com.
A
103.216.113.30
[
AS63765
][
I
]
2022-08-02 20:48:18
2025-07-09 23:48:14
sau7h.com.
NS
ns5.bizflycloud.vn.
2025-05-19 08:56:52
2025-07-09 23:48:14
sau7h.com.
NS
ns6.bizflycloud.vn.
2025-05-19 08:56:52
2025-07-09 23:48:14
sau7h.com.
NS
ns94.hostvn.net.
2022-02-03 10:43:55
2025-07-09 23:48:14
sau7h.com.
NS
ns95.hostvn.net.
2022-02-03 10:43:55
2025-07-09 23:48:14
eagcop.com.
NS
ns4.bizflycloud.vn.
2025-08-19 03:04:03
2025-08-19 03:04:03
eagcop.com.
NS
ns5.bizflycloud.vn.
2025-08-19 03:04:03
2025-08-19 03:04:03
eagcop.com.
NS
ns6.bizflycloud.vn.
2025-08-19 03:04:03
2025-08-19 03:04:03
WHOIS info for: ns4.bizflycloud.vn
This TLD has no whois server, but you can access the whois database at http://www.vnnic.vn/en/domain