Jane; Your letter to the Five Doves on December 1 was forwarded to me and although I would not presume to try and tell you why you received this word, it is possible that I could provide you with some information that might be helpful.
As you have already been told, Ashdod is a city in Israel which dates back to the time of the Canaanites in the Old Testament. It exists today as one of the largest cities in Israel, and possibly more significantly, it is Israel's largest port city. Why significant? These two facts make it a major target for anyone who wishes attack the nation of Israel. An attack on Ashdod would not only result in numerous civilian casualties, it would also disrupt Israel's importation of goods through the port. This is also the port through which supplies for Gaza are passed as a result of Israel's naval blockade.
Because this city exists today, and you have received this word at this time, it seems logical to conclude that the reasons for it are future. So do we know anything from scripture that deals with Ashdod in the future? I think there are at least a couple of verses that could shed some light on God's future plans for this city.
For Gaza shall be forsaken, And Ashkelon desolate; They shall drive out Ashdod at noonday, And Ekron shall be uprooted.
Zephaniah 2:4 NKJV
Zephaniah was a prophet tasked to proclaim both the immediate, and future judgment by God on Israel. Although some of his prophecies were fulfilled when Israel was conquered by Nebuchadnezzar, some are yet future. We are told exactly when these will happen in his first chapter.
Be silent in the presence of the Lord GOD; For the day of the LORD [is] at hand, For the LORD has prepared a sacrifice; He has invited His guests.
Zephaniah 1:7 NKJV
The day of the Lord occurs during the coming tribulation period, and as you may already be aware, many believe that period could begin at any time. Something else that I believe may be relevant is a verse in Isaiah that many are unfamiliar with, yet could possibly also be related to Ashdod. If you have read, or are familiar with the prophecy of the Destruction of Damascus which is found in Isaiah 17, you know that Israel will someday destroy that city with what many suspect will be a nuclear type device.
While many read and refer to the first few verses of the chapter, I have found that quite a few neglect to read on in the chapter to discover more of the particulars about the event. If you do, you will find that when this destruction occurs, there are many parts of Israel affected by it. I think it entirely possible that Ashdod could be one of the “strong cities” we read about in verse 9;
In that day his strong cities will be as a forsaken bough And an uppermost branch, Which they left because of the children of Israel; And there will be desolation.
Isaiah 17:9 NKJV
Ashdod would certainly be considered one of the most important cities in Israel today, so I think it reasonable to assume it could be one of the cities this verse refers to. As I read your post and followed the links back it would appear others have felt a link to Damascus as well, so that in turn could be another sign that this is a possibility. Most scholars familiar with the Isaiah 17 prophecy place it before the Ezekiek 38,39 prophecy, which as a result makes many people feel it could happen at any time.
Can we say for certain? Maybe not, but the fact that you felt strongly to pray for this city and the recent threats by Israel's enemies to target their major cities at a time where many are expecting the fulfillment of the Isaiah 17 prophecy, it would certainly make it appear they are related. In any case, the Bible tells us to pray for the peace of Jerusalem, and of course by extension, all of Israel. I hope this helps you a little with your question about Ashdod.