Access to mobile networks and all wireless - the less costly options used by most people in the developing country - remained blocked on Saturday.
The 2008 constitution ensured military dominance by reserving it enough seats in the legislature to block any charter changes and by retaining control of key government ministries. Some of those banned or whose operations have been suspended have continued to publish via social media or whatever methods they can find.
State broadcaster MRTV announced the warrants for the 18 with screenshots and links to their Facebook profiles.
Myanmar's oldest insurgent group, the Karen National Union (KNU), has seen the first military air strikes on its forces in more than 20 years, after it announced its support for the pro-democracy movement.
Also Friday, a South Korean bank said it temporarily closed its branch in Yangon and was considering bringing its South Korean employees back home after security forces fatally shot one of its Myanmar employees. South Korea's Foreign Ministry said the woman was shot while Myanmar security forces inspected the company vehicle she was using.
The security forces have also arrested numerous suspected opponents of the coup. The election commission said the vote was fair. It said it had previously restricted business.
In another blow to the junta's business interests, two military-owned supermarkets in Yangon were set ablaze overnight, and more worldwide companies cut ties.
A local human rights group says 550 people have been killed in the crackdown since the February 1 coup.
Dang said ASEAN is in "a unique position" to engage the different sides, including the military, and make them "understand what is good for them, for Myanmar, today and for the future". "Concerned governments should demand the release of everyone disappeared and impose targeted economic sanctions against junta leaders to finally hold this abusive military to account".
Myanmar's oldest ethnic armed organization, the Karen National Union (KNU), has condemned repeated airstrikes by the Myanmar military that have forced thousands of Karen civilians to flee their homes, and urged the worldwide community to impose an arms embargo on military regime.
The victims include more than 40 children, according to the NGO Save the Children.
About 3,000 Karen fled to Thailand, but many returned under unclear circumstances.
The U.N. Human Rights Office for Southeast Asia called on countries in the region on Thursday "to protect all people fleeing violence and persecution" in Myanmar and "ensure that refugees and undocumented migrants are not forcibly returned given the rapidly deteriorating human rights situation" there, U.N. spokesman Stephane Dujarric told reporters at the world body's headquarters in NY.
UNSC President Dang Dinh Quy detailed Thursday that members of the security council are deeply concerned by the "rapidly deteriorating situation" in Myanmar and "strongly condemn" the violence that has led to the "deaths of hundreds of civilians, including women and children".
In earlier versions of the text, obtained by AFP, Western nations wanted to include a "readiness to consider further steps" - a reference to the possibility of worldwide sanctions. China and Russian Federation, both permanent Council members and both arms suppliers to Myanmar's military have generally opposed sanctions.
The worsening situation prompted Christine Schraner Burgener, the United Nations special envoy for Myanmar, to warn the Security Council on Wednesday that "a bloodbath is imminent" and of an increasing "possibility of civil war" in the country if civilian rule is not restored.
Myanmar's border regions are largely controlled by various ethnic armed groups that have long agitated for greater autonomy.
Authorities have issued warrants for 18 show business celebrities, social media "influencers" and two journalists under a law against material meant to cause a member of the armed forces to mutiny or disregard their duty, state media reported. Even in times of peace, relations have been strained and cease-fires fragile.