honseki to tudukigara wo kakuninsuru.

It is read:

• 本籍 = ほんせき
• と = to
• 続柄 = つづきがら
• を = o / wo
• 確認する = かくにんする

So the whole sentence is:

ほんせき と つづきがら を かくにんする。

A couple of useful notes:

• を is written wo in romanization, but in modern Japanese it is pronounced more like o.
• 続柄 is a word that learners often find hard to read because the kanji do not suggest the reading very clearly.

No. 本籍 is not your current address.

It refers to your registered domicile for Japan’s family registry system (戸籍, koseki). In English, it is often translated as:

• registered domicile
• legal domicile
• sometimes just domicile

Important distinction:

• 住所 = your actual address, where you live
• 本籍 = the place recorded in your family register

So even if someone lives in Tokyo, their 本籍 might be somewhere completely different.

続柄 means a person’s relationship within the family or family relationship.

On official forms, it often means something like:

• relationship to the head of household
• relationship to another family member
• family status/relationship

Examples of 続柄 could be:

• 本人 = self
• 夫 = husband
• 妻 = wife
• 長男 = eldest son
• 長女 = eldest daughter

So in this sentence, it means checking what family relationship is officially listed.

Here, と means and.

It connects the two nouns:

• 本籍
• 続柄

So:

本籍 と 続柄 = registered domicile and family relationship

This is one of the most basic uses of と: joining nouns in a complete list.

Because the two nouns are being treated as one combined object of the verb.

Structure:

• 本籍 と 続柄 = registered domicile and family relationship
• を = marks that combined phrase as the direct object
• 確認する = confirm/check

So the sentence works like:

[A and B] を 確認する
= confirm [A and B]

You do not need to say:

• 本籍を続柄を確認する ❌

That sounds wrong because Japanese normally uses one object marker for the whole coordinated noun phrase.

It can mean both confirm and check, depending on context.

Common translations include:

• confirm
• check
• verify

The nuance is usually to make sure the information is correct or matches the records.

In official, workplace, or procedural Japanese, 確認する is extremely common. It often sounds a little more formal and careful than just a casual check.

So in this sentence, natural English could be:

• Confirm the registered domicile and family relationship.
• Check the registered domicile and family relationship.
• Verify the registered domicile and family relationship.

Because this kind of sentence often appears in:

• instructions
• manuals
• checklists
• form headings
• procedural descriptions

In those contexts, Japanese often uses the dictionary form as a plain, neutral style.

So 確認する。 can feel like:

• Confirm ...
• To confirm ...
• Check ...
• a step in a procedure

If someone were speaking politely to another person, they might say:

• 本籍と続柄を確認します。
• 本籍と続柄を確認してください。

But in written instructions, 確認する is very normal.

The subject is omitted.

This is very common in Japanese. The sentence does not explicitly say:

• I confirm
• you confirm
• the staff confirms

Who is doing it depends on context.

Possible implied subjects:

• the person filling out a form
• an employee or clerk
• the speaker/writer
• anyone following the procedure

Japanese often leaves out information that is obvious from the situation.

Grammatically, it can stand as a complete sentence, but in real usage it often feels more like a procedural note or instruction label.

For example, it could appear as:

• a checklist item
• a step in a manual
• a note on a form
• an office procedure

So although it literally has a verb and is complete enough, the style is not very conversational. It feels more like:

• Check registered domicile and family relationship
• Confirm the registered domicile and family relationship

rather than a normal everyday spoken sentence.

No, here it is clearly and.

That is because と is connecting two nouns before を:

• 本籍 と 続柄 を 確認する

This structure is a straightforward noun list: A and B.

If と meant with, the sentence structure and meaning would be different. Here, the natural reading is definitely:

Confirm/check the registered domicile and the family relationship.

Yes, for many learners it feels unusual.

A few points:

• 続柄 is a common word in official or formal contexts.
• It is much less common in casual conversation than everyday family words like 父, 母, 兄, 姉, etc.
• Its reading, つづきがら, is not very transparent if you only look at the kanji.

Because of that, many learners simply memorize it as a set phrase used on forms and documents.

You do not need to analyze the kanji too deeply at first. It is often best to learn:

• 続柄 = family relationship / relationship to head of household

as one vocabulary item.

Usually と is the better choice here.

Difference:

• と = an exhaustive, definite list: A and B
• や = a non-exhaustive list: A, B, and things like that

Since official writing usually wants precision, と fits better:

• 本籍と続柄を確認する = confirm the registered domicile and the family relationship

Using や would sound less exact, as if these were only examples among other things being checked. That is usually not the intended meaning in a formal instruction.