Suggestions needed to speed up MySQL query

Suggestions needed to speed up MySQL query... please see below... thanks


#####

SELECT ACCESS_ROUTER, ASN, ASN_NAME, IP_SUM

## Union all four categories under ALLGROUPS
FROM (

## TOP10
(
SELECT "1" AR_TYPE, ACCESS_ROUTER, ASN, ASN_NAME, SUM(IP_COUNT) IP_SUM
FROM LATEST_ASSESSMENTS2 A

JOIN (
      SELECT AGENCY, DATA_DATE, IF(AR_HOSTNAME='', ACCESS_IP_OCT, AR_HOSTNAME) ACCESS_ROUTER, ASN, ASN_NAME, IP_COUNT
      FROM AR_ROLLUP AR
      JOIN AGENCY_LOOKUP AL
      ON AR.INFRA_ID = AL.INFRA_ID
      WHERE ASN NOT IN (0, -2, -5)
)B

ON A.AGENCY = B.AGENCY AND A.DATA_DATE = B.DATA_DATE
GROUP BY ACCESS_ROUTER
ORDER BY IP_SUM DESC
LIMIT 0, 10
)

UNION

## OTHER
(
SELECT AR_TYPE, "OTHER" ACCESS_ROUTER, "0" ASN, "NA" ASN_NAME, SUM(IP_SUM) IP_SUM
FROM (
      SELECT "2" AR_TYPE, ACCESS_ROUTER, ASN, ASN_NAME, SUM(IP_COUNT) IP_SUM
      FROM LATEST_ASSESSMENTS2 A
      JOIN (
            SELECT AGENCY, DATA_DATE, IF(AR_HOSTNAME='', ACCESS_IP_OCT, AR_HOSTNAME) ACCESS_ROUTER, ASN, ASN_NAME, IP_COUNT
            FROM AR_ROLLUP AR
            JOIN AGENCY_LOOKUP AL
            ON AR.INFRA_ID = AL.INFRA_ID
            WHERE ASN NOT IN (0, -2, -5)
      ) B
      ON A.AGENCY = B.AGENCY AND A.DATA_DATE = B.DATA_DATE
      
      GROUP BY ACCESS_ROUTER
      ORDER BY IP_SUM DESC
      LIMIT 11, 100000
) OTHER
GROUP BY AR_TYPE
)

UNION

## UNION OF UNKNOWN & UNADVERTISED
(
SELECT AR_TYPE, ACCESS_ROUTER, ASN, ASN_NAME, SUM(IP_SUM) IP_SUM
FROM LATEST_ASSESSMENTS2 A

JOIN (

      # UNKNOWN
      (
      SELECT AGENCY, DATA_DATE, "3" AR_TYPE, "UNKNOWN" ACCESS_ROUTER, "0" ASN, "NA" ASN_NAME, SUM(IP_COUNT) IP_SUM
      FROM AR_VALIDATED_FINAL AVF
      JOIN AGENCY_LOOKUP AL ON AVF.INFRA_ID = AL.INFRA_ID
      WHERE ACCESS_IP_OCT='' AND DEST_ASN<>-2
      GROUP BY AGENCY, DATA_DATE
      )

      UNION
      # UNADVERTISED
      (
      SELECT AGENCY, DATA_DATE, "4" AR_TYPE, "UNADVERTISED" ACCESS_ROUTER, "0" ASN, "NA" ASN_NAME, SUM(IP_COUNT) IP_SUM
      FROM AR_VALIDATED_FINAL AVF
      JOIN AGENCY_LOOKUP AL ON AVF.INFRA_ID = AL.INFRA_ID
      WHERE DEST_ASN=-2
      GROUP BY AGENCY, DATA_DATE
      )

) B

ON A.AGENCY = B.AGENCY AND A.DATA_DATE = B.DATA_DATE
GROUP BY AR_TYPE
)
) ALLGROUPS

ORDER BY AR_TYPE ASC, IP_SUM DESC