SNS publish to topic with phone number is not working - amazon-web-services

Question

I have boto3 code that creates a topic and creates a subscription to that topic and publishes the message to the topic.
The code was working fine. I tried to add a US number to the mix of Indian phone number subscribed group and everything went south. I don't get any errors all the responses are successful but I don't receive any messages.
Then I tried with normal console publish a message, even the console publish is not working.
TO cross-verify it the issue was with the region I tried publishing in us-east-1 and all worked fine.
Here is my code:
def lambda_handler(event, context):
sns = boto3.client("sns")
number = ['+91xxxxxxxx','+1xxxxxxxxxxxx','+91xxxxxxxxxx']
response = sns.create_topic(
Name='loadeo-demo',
Attributes={
}
)
arn = response['TopicArn']
print ("arn: " + arn)
for phno in number:
response = sns.subscribe(
TopicArn=arn,
Protocol='sms',
Endpoint=phno,
Attributes={
},
ReturnSubscriptionArn=False
)
# print(response)
response = sns.list_subscriptions_by_topic(
TopicArn=arn
)
print (response)
response = sns.publish(
topicArn=arn,
Message="A Load of your interest has been placed.\n" + "Please visit the web for more details.\n" + "Thank you",
)