(edited)
Summary
Unable to access all websites with domain name vercel.app from Malaysia, I have tried different network providers as well

Details
When I browse to any website hosted on vercel.app, it'll return the network error
The site can't be reached, ..... refused to connect.
However, if I am to access via a custom domain, it works
Example
if I were to access my website at: https://portfolio-v3-rosy-six.vercel.app/, it won't work If I were to access my website at: https://shenyien.com, it works
Additional Info
Output of vercel-connect-debug
1┌───────────────────────────────────────2├─────── STARTING3│4│ Domain to test: portfolio-v3-rosy-six.vercel.app 5│ Timestamp (UTC): Fri Jun 13 06:02:21 AM UTC 20256| Timestamp (Local): Fri Jun 13 02:02:21 PM +08 20257└───────────────────────────────────────89┌───────────────────────────────────────10├─────── IP Information 1112{13 "ip": "113.210.60.231",14 "city": "Kuala Lumpur",15 "region": "Kuala Lumpur",16 "country": "MY",17 "loc": "3.1412,101.6865",18 "org": "AS9534 Binariang Berhad",19 "postal": "50050",20 "timezone": "Asia/Kuala_Lumpur",21 "readme": "https://ipinfo.io/missingauth"22}23└───────────────────────────────────────2425┌───────────────────────────────────────26├─────── Testing 76.76.21.21 2728PING 76.76.21.21 (76.76.21.21) 56(84) bytes of data.2964 bytes from 76.76.21.21: icmp_seq=1 ttl=243 time=22.7 ms3064 bytes from 76.76.21.21: icmp_seq=2 ttl=243 time=38.4 ms3164 bytes from 76.76.21.21: icmp_seq=3 ttl=243 time=26.6 ms3264 bytes from 76.76.21.21: icmp_seq=4 ttl=243 time=28.0 ms3334--- 76.76.21.21 ping statistics ---354 packets transmitted, 4 received, 0% packet loss, time 3004ms36rtt min/avg/max/mdev = 22.733/28.930/38.382/5.786 ms3738bash: line 56: traceroute: command not found39└───────────────────────────────────────4041┌───────────────────────────────────────42├─────── Testing 216.198.79.1 4344PING 216.198.79.1 (216.198.79.1) 56(84) bytes of data.4564 bytes from 216.198.79.1: icmp_seq=1 ttl=243 time=21.9 ms4664 bytes from 216.198.79.1: icmp_seq=2 ttl=243 time=26.0 ms4764 bytes from 216.198.79.1: icmp_seq=3 ttl=243 time=28.7 ms4864 bytes from 216.198.79.1: icmp_seq=4 ttl=243 time=30.3 ms4950--- 216.198.79.1 ping statistics ---514 packets transmitted, 4 received, 0% packet loss, time 3003ms52rtt min/avg/max/mdev = 21.854/26.726/30.349/3.222 ms53└───────────────────────────────────────5455┌───────────────────────────────────────56├─────── Testing 216.198.79.65 5758PING 216.198.79.65 (216.198.79.65) 56(84) bytes of data.5964 bytes from 216.198.79.65: icmp_seq=1 ttl=243 time=22.0 ms6064 bytes from 216.198.79.65: icmp_seq=2 ttl=243 time=29.1 ms6164 bytes from 216.198.79.65: icmp_seq=3 ttl=243 time=25.6 ms6264 bytes from 216.198.79.65: icmp_seq=4 ttl=243 time=35.7 ms6364--- 216.198.79.65 ping statistics ---654 packets transmitted, 4 received, 0% packet loss, time 3003ms66rtt min/avg/max/mdev = 22.023/28.094/35.668/5.037 ms67└───────────────────────────────────────6869┌───────────────────────────────────────70├─────── Testing 216.198.79.129 7172PING 216.198.79.129 (216.198.79.129) 56(84) bytes of data.7364 bytes from 216.198.79.129: icmp_seq=1 ttl=243 time=27.6 ms7464 bytes from 216.198.79.129: icmp_seq=2 ttl=243 time=23.5 ms7564 bytes from 216.198.79.129: icmp_seq=3 ttl=243 time=24.6 ms7664 bytes from 216.198.79.129: icmp_seq=4 ttl=243 time=27.3 ms7778--- 216.198.79.129 ping statistics ---794 packets transmitted, 4 received, 0% packet loss, time 3004ms80rtt min/avg/max/mdev = 23.541/25.761/27.573/1.723 ms81└───────────────────────────────────────8283┌───────────────────────────────────────84├─────── Testing 216.198.79.193 8586PING 216.198.79.193 (216.198.79.193) 56(84) bytes of data.8764 bytes from 216.198.79.193: icmp_seq=1 ttl=243 time=21.7 ms8864 bytes from 216.198.79.193: icmp_seq=2 ttl=243 time=20.5 ms8964 bytes from 216.198.79.193: icmp_seq=3 ttl=243 time=19.3 ms9064 bytes from 216.198.79.193: icmp_seq=4 ttl=243 time=24.6 ms9192--- 216.198.79.193 ping statistics ---934 packets transmitted, 4 received, 0% packet loss, time 3003ms94rtt min/avg/max/mdev = 19.251/21.520/24.586/1.971 ms95└───────────────────────────────────────9697┌───────────────────────────────────────98├─────── Testing 64.29.17.1 99100PING 64.29.17.1 (64.29.17.1) 56(84) bytes of data.10164 bytes from 64.29.17.1: icmp_seq=1 ttl=243 time=20.9 ms10264 bytes from 64.29.17.1: icmp_seq=2 ttl=243 time=31.8 ms10364 bytes from 64.29.17.1: icmp_seq=3 ttl=243 time=21.8 ms10464 bytes from 64.29.17.1: icmp_seq=4 ttl=243 time=25.0 ms105106--- 64.29.17.1 ping statistics ---1074 packets transmitted, 4 received, 0% packet loss, time 3004ms108rtt min/avg/max/mdev = 20.873/24.855/31.751/4.272 ms109└───────────────────────────────────────110111┌───────────────────────────────────────112├─────── Testing 64.29.17.65 113114PING 64.29.17.65 (64.29.17.65) 56(84) bytes of data.11564 bytes from 64.29.17.65: icmp_seq=1 ttl=243 time=25.9 ms11664 bytes from 64.29.17.65: icmp_seq=2 ttl=243 time=20.4 ms11764 bytes from 64.29.17.65: icmp_seq=3 ttl=243 time=27.1 ms11864 bytes from 64.29.17.65: icmp_seq=4 ttl=243 time=23.3 ms119120--- 64.29.17.65 ping statistics ---1214 packets transmitted, 4 received, 0% packet loss, time 3004ms122rtt min/avg/max/mdev = 20.449/24.171/27.100/2.558 ms123└───────────────────────────────────────124125┌───────────────────────────────────────126├─────── Testing 64.29.17.129 127128PING 64.29.17.129 (64.29.17.129) 56(84) bytes of data.12964 bytes from 64.29.17.129: icmp_seq=1 ttl=243 time=30.4 ms13064 bytes from 64.29.17.129: icmp_seq=2 ttl=243 time=27.7 ms13164 bytes from 64.29.17.129: icmp_seq=3 ttl=243 time=32.4 ms13264 bytes from 64.29.17.129: icmp_seq=4 ttl=243 time=30.7 ms133134--- 64.29.17.129 ping statistics ---1354 packets transmitted, 4 received, 0% packet loss, time 3003ms136rtt min/avg/max/mdev = 27.742/30.304/32.425/1.673 ms137└───────────────────────────────────────138139┌───────────────────────────────────────140├─────── Testing 64.29.17.193 141142PING 64.29.17.193 (64.29.17.193) 56(84) bytes of data.14364 bytes from 64.29.17.193: icmp_seq=1 ttl=243 time=19.2 ms14464 bytes from 64.29.17.193: icmp_seq=2 ttl=243 time=25.8 ms14564 bytes from 64.29.17.193: icmp_seq=3 ttl=243 time=32.5 ms14664 bytes from 64.29.17.193: icmp_seq=4 ttl=243 time=49.2 ms147148--- 64.29.17.193 ping statistics ---1494 packets transmitted, 4 received, 0% packet loss, time 3005ms150rtt min/avg/max/mdev = 19.169/31.665/49.229/11.183 ms151└───────────────────────────────────────152153┌───────────────────────────────────────154├─────── dig portfolio-v3-rosy-six.vercel.app 155156157; <<>> DiG 9.20.9 <<>> portfolio-v3-rosy-six.vercel.app158;; global options: +cmd159;; Got answer:160;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 38841161;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1162163;; QUESTION SECTION:164;portfolio-v3-rosy-six.vercel.app. IN A165166;; ANSWER SECTION:167portfolio-v3-rosy-six.vercel.app. 1800 IN CNAME mcmc-redirect.maxis.com.my.168mcmc-redirect.maxis.com.my. 9 IN A 175.139.142.25169170;; ADDITIONAL SECTION:171rpz.blacklist.maxis.com.my. 1 IN SOA dnsk02.men.maxis.com.my. root.rpz.blacklist.maxis.com.my. 2024144850 3600 600 1209600 3600172173;; Query time: 28 msec174;; SERVER: 192.168.192.56#53(192.168.192.56) (UDP)175;; WHEN: Fri Jun 13 14:02:48 +08 2025176;; MSG SIZE rcvd: 196177178└───────────────────────────────────────179180┌───────────────────────────────────────181├─────── dig portfolio-v3-rosy-six.vercel.app via 8.8.8.8182183184; <<>> DiG 9.20.9 <<>> portfolio-v3-rosy-six.vercel.app @8.8.8.8185;; global options: +cmd186;; Got answer:187;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10400188;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1189190;; OPT PSEUDOSECTION:191; EDNS: version: 0, flags:; udp: 512192;; QUESTION SECTION:193;portfolio-v3-rosy-six.vercel.app. IN A194195;; ANSWER SECTION:196portfolio-v3-rosy-six.vercel.app. 300 IN A 216.198.79.193197portfolio-v3-rosy-six.vercel.app. 300 IN A 64.29.17.193198199;; Query time: 32 msec200;; SERVER: 8.8.8.8#53(8.8.8.8) (UDP)201;; WHEN: Fri Jun 13 14:02:49 +08 2025202;; MSG SIZE rcvd: 93203204└───────────────────────────────────────205206┌───────────────────────────────────────207├─────── dig portfolio-v3-rosy-six.vercel.app via trace208209210; <<>> DiG 9.20.9 <<>> portfolio-v3-rosy-six.vercel.app +trace211;; global options: +cmd212. 123518 IN NS d.root-servers.net.213. 123518 IN NS c.root-servers.net.214. 123518 IN NS j.root-servers.net.215. 123518 IN NS m.root-servers.net.216. 123518 IN NS f.root-servers.net.217. 123518 IN NS k.root-servers.net.218. 123518 IN NS a.root-servers.net.219. 123518 IN NS i.root-servers.net.220. 123518 IN NS g.root-servers.net.221. 123518 IN NS e.root-servers.net.222. 123518 IN NS l.root-servers.net.223. 123518 IN NS h.root-servers.net.224. 123518 IN NS b.root-servers.net.225. 123518 IN RRSIG NS 8 0 518400 20250621050000 20250608040000 53148 . RBaJBFY3bprmPUZ92OPkD/UPyId5WBpIRnTnZ1nOz2CfDvWiurFWYUHw Vg8uNZG3PH4FTEmgQjTtw03+NJgyB9txU19DvdGTYv+NNzj+kldfh6Ca fFapeSsFDyQXdhDnK9maOWxOaJ5s3f9qOldIJgtkvW6Tbaah2AmbVWfr CUquN7F/3YRD8NRtk/RzwRVWzfA7FWa/pxLWn131RP0di/Y3RpmxhG1N YEZI7/Qt/QtGm94xmbmqZULjSM4VInGo4Zmjyq3TDT6RfUuXfNQxCmg9 mPF88AngMFkMhNhwfoUPYqYagv+PM4mK0RugNvWdzyfgco2m7ZR7e0+M IIEm7A==226;; Received 542 bytes from 192.168.192.56#53(192.168.192.56) in 46 ms227228app. 172800 IN NS ns-tld1.charlestonroadregistry.com.229app. 172800 IN NS ns-tld2.charlestonroadregistry.com.230app. 172800 IN NS ns-tld3.charlestonroadregistry.com.231app. 172800 IN NS ns-tld4.charlestonroadregistry.com.232app. 172800 IN NS ns-tld5.charlestonroadregistry.com.233app. 86400 IN DS 23684 8 2 3A5CC8A31E02C94ABA6461912FABB7E9F5E34957BB6114A55A864D96 AEC31836234app. 86400 IN RRSIG DS 8 1 86400 20250626050000 20250613040000 53148 . HH1HdAkz/+aFt3PQM1hc8E528yQUWCLb46NdZi/sofuSBE7+XVVMgDRh KRvMAeSL0kzRXamJHHsdX3QwrBXhL2JeRdeBwkBbZ1wpuAEODAecNsgd eid3Vdrj1j3Vm0xlEHMS5OqpOi5Be/Xj2Fyaj7mpYBDVvF6v8c2MhkG5 Ac5BQzRQqhIXoxIo5w3Qnqsl6tq8xa+MSpsdhaRN0E9f67EWZgeul4NS oWKD7KVXNbuEx8bCuLOa1RmpzM3AfjqWcPKUriNqhUnYOHMUgPWMRldq obrPtuRVdTnVCLqjd1DzUKvnXOzvTQnbsD3Ko14LdTpgok957NqSbAWm Idr1kw==235;; Received 752 bytes from 192.58.128.30#53(j.root-servers.net) in 93 ms236237vercel.app. 10800 IN NS ns4.vercel-dns-3.com.238vercel.app. 10800 IN NS ns3.vercel-dns-3.com.239vercel.app. 10800 IN NS ns2.vercel-dns-3.com.240vercel.app. 10800 IN NS ns1.vercel-dns-3.com.241eq669ao42ctkor37r8mmb147q80got0q.app. 900 IN NSEC3 1 0 1 139FCA6C02909936 EQ66OFPV93RGOGTEQDLB826M1IL6REQ6 NS242eq669ao42ctkor37r8mmb147q80got0q.app. 900 IN RRSIG NSEC3 8 2 900 20250703042613 20250611042613 57325 app. NidOe7Bu7nBK+C33yPRrrYSNibLa1dSo0JsceY69RPhdZCj9/+J3wW/u pKUoUgzoNxgWn85MY/3He89Wy4U1P7nQtYGN5S4QQ0vsf8U+LgJK7Ia4 fVFZ51GvWMAdlV3R7TQiLfyvtvsC3zNL5+qQ/jpLbBuxySOmTzAF0ceK K5M=243;; Received 427 bytes from 2001:4860:4805::69#53(ns-tld5.charlestonroadregistry.com) in 71 ms244245portfolio-v3-rosy-six.vercel.app. 300 IN A 216.198.79.193246portfolio-v3-rosy-six.vercel.app. 300 IN A 64.29.17.193247vercel.app. 86400 IN NS ns1.vercel-dns-3.com.248vercel.app. 86400 IN NS ns2.vercel-dns-3.com.249vercel.app. 86400 IN NS ns3.vercel-dns-3.com.250vercel.app. 86400 IN NS ns4.vercel-dns-3.com.251;; Received 357 bytes from 2600:9000:5307:3c00::1#53(ns4.vercel-dns-3.com) in 29 ms252253└───────────────────────────────────────254255┌───────────────────────────────────────256├─────── Output of portfolio-v3-rosy-six.vercel.app257258* Host portfolio-v3-rosy-six.vercel.app:443 was resolved.259* IPv6: (none)260* IPv4: 175.139.142.25261* Trying 175.139.142.25:443...262* connect to 175.139.142.25 port 443 from 192.168.192.103 port 40400 failed: Connection timed out263* Failed to connect to portfolio-v3-rosy-six.vercel.app port 443 after 132439 ms: Could not connect to server264* closing connection #0265266└───────────────────────────────────────267268269┌───────────────────────────────────────270│ Time elapsed: 161 seconds271│272├─────── FINISHED273└───────────────────────────────────────274